US20150345143A1 - Coping Cleat and System for Roof Blocking Unit - Google Patents
Coping Cleat and System for Roof Blocking Unit Download PDFInfo
- Publication number
- US20150345143A1 US20150345143A1 US14/696,762 US201514696762A US2015345143A1 US 20150345143 A1 US20150345143 A1 US 20150345143A1 US 201514696762 A US201514696762 A US 201514696762A US 2015345143 A1 US2015345143 A1 US 2015345143A1
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- United States
- Prior art keywords
- cleat
- web
- coping
- spring leaf
- extending
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 230000010485 coping Effects 0.000 title claims abstract description 77
- 230000000903 blocking effect Effects 0.000 title claims abstract description 26
- 239000012528 membrane Substances 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 9
- 230000001154 acute effect Effects 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims abstract description 5
- 150000001875 compounds Chemical class 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims 2
- 229920003266 Leaf® Polymers 0.000 description 28
- 238000010586 diagram Methods 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
- E04D3/40—Slabs or sheets locally modified for auxiliary purposes, e.g. for resting on walls, for serving as guttering; Elements for particular purposes, e.g. ridge elements, specially designed for use in conjunction with slabs or sheets
- E04D3/405—Wall copings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/15—Trimming strips; Edge strips; Fascias; Expansion joints for roofs
Definitions
- This disclosure relates generally to coping assemblies for implementing waterproofing for a roof blocking unit, such as a parapet wall. More particularly, the present disclosure relates to coping system hardware which is employed for sealing the top of a parapet wall of a building.
- cleats are spaced and secured across the top of the wall.
- a second component which may have several forms and is occasionally referred to as a shoe, is placed over the cleat.
- the component has a drain joint splice recess to divert water onto the roof.
- Coping caps which are typically in the form of pre-determined lengths such as, for example, ten-foot lengths, and have an inverted channel-shape structure, are mounted over the cleats.
- the cleats with the drain recesses are disposed below the ends of the coping caps. Water, which may pass between the ends of the coping caps, flows onto the roof.
- the coping caps are typically resiliently secured by lower hook-like flanges which engage lower flanges of the cleats for securing the caps to the top of the wall.
- the top of the parapet wall is typically initially covered by a waterproof membrane.
- the coping system components are dimensioned to accommodate the thickness dimensions of the parapet wall.
- the cleats are typically formed from galvanized metal and stainless steel and are secured to the top of the parapet wall over the membrane by numerous methods including the use of fasteners and/or adhesives.
- the cleat also has a spring element that is mounted at the top of the cleat to provide an upward spring bias. The biasing force is exerted against the underside of the top panel of the cap to securely maintain the coping cap to the cleat via the lower hook/flange engagement and hence to the top of the wall.
- An embodiment of a cleat for a coping assembly has a web with opposed front and rear ends.
- a front side integrally extends from the front end to an outwardly extending distal flange.
- a rear side integrally extends from the rear end to an outwardly extending distal flange.
- a first integral spring leaf is formed from a bend in and extends from the web intermediate the front and rear ends in a direction opposite from the front and rear sides.
- a coping unit for a roof blocking unit in another embodiment, includes a cleat and a diverter component.
- the cleat has a web with opposed first and second ends.
- a front side integrally extends from the first end to an outwardly extending distal flange.
- a rear side integrally extends from the second end.
- An integral spring leaf extends from said web in a direction opposite from the front and rear sides.
- the diverter component includes a central panel that forms a diverter channel and has front and rear ends.
- a front panel integrally extends from the front end, and a rear panel integrally extends from the rear end.
- the diverter component is mounted over the cleat with the front panel engaging the front side in a substantially surface-to-surface relationship.
- the rear panel engages the rear side in a substantially surface-to surface relationship.
- the spring leaf biases the central panel in the direction opposite from the front and rear sides.
- the channel is disposed at an acute angle relative to the web.
- a coping assembly installation comprises a roof blocking unit, a fluid impermeable membrane, a cleat, a diverter component and a pair of coping caps.
- the roof blocking unit wall has a top surface extending between front and rear faces.
- the membrane is disposed over the top surface of the wall.
- the cleat is mounted over the membrane and secured to the wall.
- the cleat has an integral spring leaf that extending away from the top surface and a lower flange.
- the diverter component is mounted over the cleat and forms a drain recess disposed at an acute angle relative to the top surface.
- the coping caps each have a lower hook-like flange and extend transversely between opposite edges.
- the caps are disposed over the cleat and diverter component in an offset arrangement with the drain recess disposed substantially beneath adjacent edges of the coping caps.
- the spring leaf biases the caps away from the top surface to urge the lower hook-like flange in each cap into engagement with the cleat flange.
- FIG. 1 is an exploded view, portions shown in broken lines, of a representative portion of a roof blocking unit and a coping system incorporating a cleat in accordance with the disclosure;
- FIG. 3 is a front elevation view, partly in phantom and partly in diagram form, of a portion of the installed coping system of FIG. 2 ;
- FIG. 6 is a top plan view, partly in diagram form, of a preferred embodiment of a cleat employable in the coping system
- FIG. 7 is a simplified elevation profile view, partly in diagram form, of the cleat of FIG. 6 ;
- FIG. 8 is a top plan view, partly in diagram form, of another embodiment of a cleat employable in the coping system
- FIG. 9 is an elevation profile view, partly in diagram form, of the cleat of FIG. 8 ;
- FIG. 10 is a top plan view, partly in diagram form, of yet another embodiment of a cleat employable in the coping system;
- FIG. 11 is a simplified elevation profile view, partly in diagram form, of the cleat of FIG. 10 ;
- FIG. 12 is an elevation face view, partly in diagram form, of the cleat of FIG. 10 ;
- FIG. 13 is a perspective view of a drain joint splice component for the coping system
- FIG. 14 is an annotated elevation profile view of the drain joint splice component of FIG. 13 ;
- FIG. 15 is an annotated, side sectional view, partly in diagram form, of another embodiment of the coping assembly installed on a roof blocking unit;
- FIG. 16A is an exploded view of a pre-attached cleat-splice unit according to the disclosure.
- FIG. 16B depicts the pre-attached cleat-splice unit in commercial distribution form
- FIG. 16C is an exploded view of a coping assembly, including a transverse support member
- FIG. 17A depicts embodiments of inner and outer corner coping caps for use in the disclosed assembly
- FIG. 17B depicts embodiments of end coping caps for use in the disclosed assembly
- FIG. 18 is an annotated, side sectional view, partly in diagram form, of an embodiment of the coping assembly installed on a masonry wall;
- FIG. 19 shows an embodiment of a cleat member for use with deeper roof blocking units, including a top plan view and side elevation profile and preferred dimensions;
- FIG. 20 shows an embodiment of a cleat member for use with a roof blocking unit with a short depth, including a front elevation, top plan and side elevation views and preferred dimensions;
- FIG. 21 shows an embodiment of a cleat member for use on a tall roof blocking unit, including a front elevation, top plan and side elevation views and preferred dimensions;
- FIG. 22 shows an alternate embodiment of the disclosed coping assembly for use in providing a flat upper surface or installation on a curved roof blocking unit
- FIG. 23 shows a top plan view and a side elevation view of the cleat of FIG. 22 , including preferred dimensions.
- a cleat which is employed in a coping system or assembly 100 is generally designated by the numeral 10 .
- the preferred application of the cleat 10 is in connection with a coping system which is used to provide a water seal and improved aesthetics for the top of a roof blocking unit (oftentimes a parapet wall).
- a representative roof blocking unit here a parapet wall P
- a parapet wall P is typically arranged at the edge of a roofing structure, and has a top which is crowned by a blocking B.
- Additional roof edge blocking systems such as that disclosed in commonly owned U.S. Pat. No. 8,381,451 (disclosure incorporated herein by reference), are also suitable for use with the disclosed cleat 10 and coping system.
- a water-impervious membrane M lays over the roofing structure and covers the top surface of the blocking B.
- the wall P has a front face side and a back side (adjacent the roof).
- a multiplicity of cleats 10 receive a mounted joint splice or drain component 12 and a plurality of the cleat/drain component units are secured to the top of the wall P at pre-established spacings.
- the spacings correspond generally to the length of a standard coping cap 14 which has a typical transverse length of approximately 10 feet, though this preferred length and spacing is nonlimiting.
- the ends of the coping cap 14 are mounted over the cleat/drain component unit in edge-to-edge relationship which oftentimes necessarily defines a small gap G therebetween, as best illustrated in FIG. 3 .
- the gap G can be up to approximately 0.25 inches.
- adjacent coping caps 14 may meet in a flush edge-to-edge abutment or even overlap slightly. Regardless of the exact relative positioning of adjacent caps 14 , the system is susceptible to fluid leakage between the caps.
- the cleats 10 are unitary components designed to receive and securely mount elongated coping caps 14 to the top of the wall P.
- the cleats 10 may be secured to the blocking B by stainless steel or similar fasteners 16 or similar material such as zinc coated fasteners, such as screws, and optionally washers 18 .
- the cleats 10 are principally dimensioned to accommodate the thickness of the parapet wall.
- Various representative sizes and configurations of the disclosed cleat are designated as cleat 10 A, 10 B and 10 C in FIGS. 6-7 , 8 - 9 and 10 - 12 .
- the cleats 10 are preferably manufactured from 20 gauge to 16 gauge galvanized metal and, for some applications, 20 gauge to 16 gauge stainless steel.
- the cleat has a central planar web 20 of uniform length (generally commensurate with or slightly longer than the parapet wall is deep) ranging from approximately 4 inches to 36 inches and a uniform lateral width typically of approximately 8 inches to 16 inches, and more preferably approximately 12 inches.
- a back side 22 integrally extends via a bend from one end of the web approximately perpendicular to the web and terminates in a lower laterally extending, outwardly facing flange 24 .
- the front end of the web integrally connects via an upper compound bend forming an upper vertex 30 with a front side 32 which extends downwardly a distance greater than that of back side 22 at an orientation approximately perpendicular to the plane of the web.
- the front side 32 terminates in a lower laterally extending, frontally facing flange 34 .
- the front side 32 may also include a pair of laterally spaced slots 36 .
- the cleat 10 has an integral spring leaf 50 which extends upwardly from a plane defined by the web 20 at a preferred angle of approximately 15-20°.
- the distal end of the integral leaf has a bent end portion 52 .
- End portion 52 functions to reinforce the leaf 50 when the system is assembled.
- the integral leaf 50 provides an upward supporting bias against an installed overlying coping cap 14 , as will be further described.
- an auxiliary diverter drain component (splice) 12 is dimensioned to mount over the cleat 10 in a substantially central nested relationship.
- Component 12 is typically manufactured from metal, such as aluminum, and is also available in 24 gauge galvanized metal.
- the drain component 12 includes a central web 60 with laterally spaced multi-folded sides 62 , defining a channel. The sides cooperate to provide a drain recess or channel for diverting water which may flow through between adjacent coping caps 14 , such as through the gap G, onto the roof (not illustrated).
- a back panel 64 integrally extends from the central web in essentially a downward direction.
- a front panel 66 integrally extends from the front of the central web and may include a forwardly facing terminal flange 68 .
- the front panel 66 Upon mounting the components over the cleat 10 , the front panel 66 is dimensioned to mate with the front side 32 of the cleat in a substantially surface-to-surface relationship.
- a pair of rearward protrusions 67 may be punched in the front face 66 and are positioned so that when the component 12 is nested over the cleat, the protrusions 67 mate with the openings 36 of the cleat to form a closely received, nested unitized assembly wherein the drain channel is oriented at a downward angle toward the rear, and thus upon installation, toward the roof.
- the splice component 12 and the cleat 10 may be attached via other methods known in the field, such as for example, adhesive, rivet, screws and staples.
- the cleat 10 A is adapted for a wall thickness of approximately 12 inches and accordingly has a length between the front and rear faces of approximately 12 inches.
- the cleat is formed from 20 gauge to 16 gauge galvanized material or 20 gauge to 16 gauge stainless steel and is cut, drilled, stamped, shaped and/or bent to the configurations illustrated in the drawings.
- the cleat 10 A includes a pair of 0.250 inch diameter holes 26 centered approximately 10 inches apart and 0.1875 inch slots 28 centered approximately 10 inches apart adjacent the back side 22 .
- the holes 26 and slots 28 provide openings for fastening the cleat 10 to the blocking with fasteners 16 .
- This cleat is also available for masonry conditions with the use of Tapcon® concrete fasteners or other masonry/concrete fasteners (see FIG. 18 ).
- the intermediate portion of the web is scored with a three sided rectilinear U-shaped slot 21 so that a formed rectangular appendage may be bent upwardly along the open end of the U-shaped slot at an angle of approximately 15° to form the spring leaf 50 .
- the free distal end 52 of the leaf is bent downwardly at an approximately 75° angle and extends approximately 0.375 inches.
- the leaf 50 is centrally positioned relative to the opposite lateral edges of the cleat. It should be appreciated that the angles and bends which form the described front, side, back side and the respective flanges are subsequently formed and configured.
- the face side 32 extends 5.22 inches (with ranges from 2.5 inches to 12 inches for some embodiments) from the vertex 30 of the bend, and the rear side 22 extends downwardly approximately 2.54 inches (with ranges from 2.5 inches to 10 inches for some embodiments) from the web at the rear.
- Cleat 10 B in FIGS. 8 and 9 is adapted for a wall thickness of approximately 24 inches and also has a lateral dimension of approximately 12 inches.
- cleat 10 B two integral leafs 50 and 54 are formed in the web. Each leaf is centrally located between the lateral edges. The leafs are substantially identical and each extends approximately 5 inches in length at an angle of approximately 15° to the planar surface of the web 20 .
- Cleat 10 C illustrated in FIGS. 10-12 is adapted for a wall having a thickness of approximately 4 inches.
- the leaf 50 is significantly shorter in length and has an angle relative to the plane of the web of approximately 20°.
- no fasteners are required on the face side 32 of cleat 10 C.
- the front face side includes slots 33 for splice attachment through the use of a custom button tool designed to hold the splice in place.
- the height of the front face side in the vertical direction may vary from approximately 2.5 to 12 inches.
- Nonlimiting representative dimensions for preferred embodiments of cleats 10 A, 10 B and 10 C, shown respectively in FIGS. 6-7 , FIGS. 8-9 , and FIGS. 10-12 are set forth in Table I below (units in inches):
- the aluminum joint splice or diverter drain component 12 is initially nested over the galvanized cleat 10 having the integral bias member in the form of leaf 50 , as best illustrated in FIG. 4 .
- This cleat-splice unit comprising the drain component and the cleat is then fastened as a single piece to the top of the parapet wall P, as herein described.
- the coping cap 14 is then forced downwardly over the fastened cleat and drain component so that the edge of the coping cap 14 is slightly off center and an adjacent cap 14 may then be positioned oppositely in edge-to-edge relationship, as shown in FIG. 3 , or in a slightly overlapping configuration (not depicted).
- the coping caps are retained by the transverse hook 15 in cooperative engagement with the cleat and drain component flanges, 34 and 68 , without requiring fasteners through the outer surfaces of the coping cap, thereby enhancing the fluid sealing integrity of the installed coping system.
- Each integral leaf, 50 and 54 functions as a spring to bias the cap upwardly and maintain a tight hook/flange engagement, and thus securedly attach the caps to the top of the wall.
- multiple cleats/diverter drain components are spaced along the top of the wall and multiple coping caps are secured in the aforementioned edge-to-edge relationship.
- the joint splice components 12 and cleats 10 also eliminate the danger of fastening in the front faces over the edge of the roof for the engagement of coping.
- FIG. 15 depicts a preferred embodiment of the coping system 100 ′ installed on a parapet wall of standard blocking material.
- the FACE dimension ranges in height from approximately 3 inches to approximately 12 inches, while the BACK dimension ranges in height from approximately 3 inches to approximately 6 inches.
- the FRONT face typically extends approximately 1-2 inches above the upper surface of the blocking material.
- the leaf spring 50 extends relative to the web 20 at an angle A, which ranges from approximately 15° to approximately 60°, and most preferably is approximately 30° prior to being compressed toward the web 20 by the joint splice component 12 .
- the disclosed embodiments may also employ a support channel 70 for improving the strength and stability of the system once installed and preventing downward sagging of any of the web elements.
- the support channel 70 may comprise a simple elongate C-channel member bent from metal, such as steel.
- Embodiments of the C-channel may be rearwardly angled slightly downward at an angle A c , ranging from approximately 89° to 80°, and most preferably 88°, relative to the vertical. The slight downward angle accommodates the trajectory of the joint splice 12 and upper surface of the coping cap 14 .
- the depicted support channels are installed on walls having a relatively larger depth of preferably approximately 24 inches or greater to prevent or reduce sagging.
- FIGS. 16A and 16B depict the cleat 10 and joint splice 12 attached prior to installation on a parapet wall.
- the pre-attached unit 13 depicted in FIG. 16B is provided commercially, and thereafter mounted over a membrane layer M on a parapet wall as a single integral unit prior to attachment of adjacent coping caps in a laterally offset position with the channel of the joint splice positioned underneath the adjacent edges of the respective caps, which may abut, overlap or define a small gap G of up to approximately 0.25 inches (see FIG. 16C ).
- FIG. 17A depicts coping caps for use on inside and outside wall corners ( 14 a , 14 b ), while 17 B depicts end coping caps ( 14 c , 14 d ).
- FIG. 18 depicts an alternate embodiment of the coping assembly 100 ′′ configured for attachment primarily to masonry parapet walls W m .
- the key distinguishing features of the cleat 10 ′′ for masonry are pop rivets 72 for aiding in pre-attaching the splice member 12 ′′, which is configured with complimentary slots in the front panel.
- the coping cap 14 may be mounted over the installed cleat-splice unit.
- FIG. 19 depicts an embodiment of a cleat member 10 ′′′ with a pair of spaced spring leafs ( 50 A and 50 B).
- both the front leaf 50 A and rear leaf 50 B extend rearwardly from the web at approximately 30°, though the respective leafs may fall within the aforementioned approximate range of 15°-60°.
- FIG. 19 are several preferred dimensions for elements of the cleat member 10 ′′′.
- FIG. 20 depicts a cleat member with short front and rear faces for use with shorter parapet walls, and includes representative dimension measurements.
- FIG. 21 depicts a cleat member with longer front and rear faces for installation on a taller parapet wall.
- FIG. 22 shows another embodiment of the coping assembly for use primarily with a deeper wall wherein a substantially flat upper surface is preferred over a top surface that transitions downward toward the roof structure, like the previously depicted embodiments.
- the cleat member includes a front spring leaf 50 A and a rear spring leaf 50 B.
- the front spring leaf 50 A extends forward from the web at an acute angle, while the rear spring leaf 50 B extends rearwardly in this embodiment.
- FIG. 23 shows preferred dimensions of the cleat member of the embodiment of the coping assembly shown in FIG. 22 . As with all of the embodiments depicted and described herein, the particular dimensions noted are preferred and non-limiting.
- a cleat member that is not fastened to the front surface of the parapet wall with a fastener, such as a screw, nail or staple.
- a fastener such as a screw, nail or staple.
- This system is typically employed with walls having a shorter height, of up to approximately 6 inches.
- the disclosed coping assembly that includes the cleat-splice unit with integral spring leaf provides a substantial advantage over known coping systems.
- the disclosed assembly allows a two-step installation, which dramatically simplifies installation while improving safety.
- Some disclosed embodiments eliminate the dangerous practice of an installer hanging over a parapet wall to manually secure a coping cleat with a fastener in the front face.
- the pre-attached cleat-splice units streamline the installation process, by eliminating the need to split apart attached series of splice members and identify the proper sized splice to attach to a certain cleat.
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Abstract
A cleat for use with a roof blocking unit has an integral leaf spring formed as a bend in a web intermediate its front and rear ends with a front side extending downward from the front end and a rear side extending downward from the rear end. In a coping unit, a diverter component defines a channel and is mounted over the cleat. The channel is disposed at an acute angle relative to the cleat web. In a coping assembly installation, a fluid impermeable membrane is disposed over the top of a roof blocking unit with the cleat mounted over the membrane and the diverter component mounted over the cleat. A pair of coping caps is disposed over the cleat and diverter in an offset arrangement with the channel beneath adjacent coping cap edges. The spring leaf biases the caps with a hook-like flange in engagement with a cleat flange.
Description
- This application claims priority from U.S. Provisional Application No. 62/003,250, filed May 27, 2014, for Cleat For Parapet Coping Assembly, the entire disclosure of which is hereby incorporated by reference in its entirety.
- This disclosure relates generally to coping assemblies for implementing waterproofing for a roof blocking unit, such as a parapet wall. More particularly, the present disclosure relates to coping system hardware which is employed for sealing the top of a parapet wall of a building.
- For coping systems to which the present disclosure relates, cleats are spaced and secured across the top of the wall. A second component, which may have several forms and is occasionally referred to as a shoe, is placed over the cleat. The component has a drain joint splice recess to divert water onto the roof. Coping caps, which are typically in the form of pre-determined lengths such as, for example, ten-foot lengths, and have an inverted channel-shape structure, are mounted over the cleats. The cleats with the drain recesses are disposed below the ends of the coping caps. Water, which may pass between the ends of the coping caps, flows onto the roof. The coping caps are typically resiliently secured by lower hook-like flanges which engage lower flanges of the cleats for securing the caps to the top of the wall.
- The top of the parapet wall is typically initially covered by a waterproof membrane. The coping system components are dimensioned to accommodate the thickness dimensions of the parapet wall. The cleats are typically formed from galvanized metal and stainless steel and are secured to the top of the parapet wall over the membrane by numerous methods including the use of fasteners and/or adhesives. In many conventional systems, the cleat also has a spring element that is mounted at the top of the cleat to provide an upward spring bias. The biasing force is exerted against the underside of the top panel of the cap to securely maintain the coping cap to the cleat via the lower hook/flange engagement and hence to the top of the wall.
- An embodiment of a cleat for a coping assembly has a web with opposed front and rear ends. A front side integrally extends from the front end to an outwardly extending distal flange. A rear side integrally extends from the rear end to an outwardly extending distal flange. A first integral spring leaf is formed from a bend in and extends from the web intermediate the front and rear ends in a direction opposite from the front and rear sides.
- In another embodiment, a coping unit for a roof blocking unit includes a cleat and a diverter component. The cleat has a web with opposed first and second ends. A front side integrally extends from the first end to an outwardly extending distal flange. A rear side integrally extends from the second end. An integral spring leaf extends from said web in a direction opposite from the front and rear sides. The diverter component includes a central panel that forms a diverter channel and has front and rear ends. A front panel integrally extends from the front end, and a rear panel integrally extends from the rear end. The diverter component is mounted over the cleat with the front panel engaging the front side in a substantially surface-to-surface relationship. The rear panel engages the rear side in a substantially surface-to surface relationship. The spring leaf biases the central panel in the direction opposite from the front and rear sides. The channel is disposed at an acute angle relative to the web.
- In yet another embodiment, a coping assembly installation comprises a roof blocking unit, a fluid impermeable membrane, a cleat, a diverter component and a pair of coping caps. The roof blocking unit wall has a top surface extending between front and rear faces. The membrane is disposed over the top surface of the wall. The cleat is mounted over the membrane and secured to the wall. The cleat has an integral spring leaf that extending away from the top surface and a lower flange. The diverter component is mounted over the cleat and forms a drain recess disposed at an acute angle relative to the top surface. The coping caps each have a lower hook-like flange and extend transversely between opposite edges. The caps are disposed over the cleat and diverter component in an offset arrangement with the drain recess disposed substantially beneath adjacent edges of the coping caps. The spring leaf biases the caps away from the top surface to urge the lower hook-like flange in each cap into engagement with the cleat flange.
- Aspects of the preferred embodiment will be described in reference to the drawings, where like numerals reflect like elements:
-
FIG. 1 is an exploded view, portions shown in broken lines, of a representative portion of a roof blocking unit and a coping system incorporating a cleat in accordance with the disclosure; -
FIG. 2 is an annotated, side sectional view, partly in diagram form, of the roof blocking unit and the installed coping system ofFIG. 1 ; -
FIG. 3 is a front elevation view, partly in phantom and partly in diagram form, of a portion of the installed coping system ofFIG. 2 ; -
FIG. 4 is an exploded view, partly in schematic, illustrating an assembly stage for the coping system ofFIG. 1 ; -
FIG. 5 is an exploded view, partly in schematic, illustrating a second assembly stage of the coping system ofFIG. 1 ; -
FIG. 6 is a top plan view, partly in diagram form, of a preferred embodiment of a cleat employable in the coping system; -
FIG. 7 is a simplified elevation profile view, partly in diagram form, of the cleat ofFIG. 6 ; -
FIG. 8 is a top plan view, partly in diagram form, of another embodiment of a cleat employable in the coping system; -
FIG. 9 is an elevation profile view, partly in diagram form, of the cleat ofFIG. 8 ; -
FIG. 10 is a top plan view, partly in diagram form, of yet another embodiment of a cleat employable in the coping system; -
FIG. 11 is a simplified elevation profile view, partly in diagram form, of the cleat ofFIG. 10 ; -
FIG. 12 is an elevation face view, partly in diagram form, of the cleat ofFIG. 10 ; -
FIG. 13 is a perspective view of a drain joint splice component for the coping system; -
FIG. 14 is an annotated elevation profile view of the drain joint splice component ofFIG. 13 ; -
FIG. 15 is an annotated, side sectional view, partly in diagram form, of another embodiment of the coping assembly installed on a roof blocking unit; -
FIG. 16A is an exploded view of a pre-attached cleat-splice unit according to the disclosure; -
FIG. 16B depicts the pre-attached cleat-splice unit in commercial distribution form; -
FIG. 16C is an exploded view of a coping assembly, including a transverse support member; -
FIG. 17A depicts embodiments of inner and outer corner coping caps for use in the disclosed assembly; -
FIG. 17B depicts embodiments of end coping caps for use in the disclosed assembly; -
FIG. 18 is an annotated, side sectional view, partly in diagram form, of an embodiment of the coping assembly installed on a masonry wall; -
FIG. 19 shows an embodiment of a cleat member for use with deeper roof blocking units, including a top plan view and side elevation profile and preferred dimensions; -
FIG. 20 shows an embodiment of a cleat member for use with a roof blocking unit with a short depth, including a front elevation, top plan and side elevation views and preferred dimensions; -
FIG. 21 shows an embodiment of a cleat member for use on a tall roof blocking unit, including a front elevation, top plan and side elevation views and preferred dimensions; -
FIG. 22 shows an alternate embodiment of the disclosed coping assembly for use in providing a flat upper surface or installation on a curved roof blocking unit; and -
FIG. 23 shows a top plan view and a side elevation view of the cleat ofFIG. 22 , including preferred dimensions. - With reference to the drawings wherein like numerals represent like parts throughout the several figures, a cleat which is employed in a coping system or
assembly 100 is generally designated by the numeral 10. The preferred application of thecleat 10 is in connection with a coping system which is used to provide a water seal and improved aesthetics for the top of a roof blocking unit (oftentimes a parapet wall). - With reference to
FIGS. 1-3 , a representative roof blocking unit, here a parapet wall P, is typically arranged at the edge of a roofing structure, and has a top which is crowned by a blocking B. Additional roof edge blocking systems, such as that disclosed in commonly owned U.S. Pat. No. 8,381,451 (disclosure incorporated herein by reference), are also suitable for use with the disclosedcleat 10 and coping system. A water-impervious membrane M lays over the roofing structure and covers the top surface of the blocking B. As will be further described below, the wall P has a front face side and a back side (adjacent the roof). A multiplicity ofcleats 10 receive a mounted joint splice ordrain component 12 and a plurality of the cleat/drain component units are secured to the top of the wall P at pre-established spacings. The spacings correspond generally to the length of astandard coping cap 14 which has a typical transverse length of approximately 10 feet, though this preferred length and spacing is nonlimiting. The ends of the copingcap 14 are mounted over the cleat/drain component unit in edge-to-edge relationship which oftentimes necessarily defines a small gap G therebetween, as best illustrated inFIG. 3 . The gap G can be up to approximately 0.25 inches. In some embodiments, adjacent coping caps 14 may meet in a flush edge-to-edge abutment or even overlap slightly. Regardless of the exact relative positioning ofadjacent caps 14, the system is susceptible to fluid leakage between the caps. - The
cleats 10 are unitary components designed to receive and securely mount elongated coping caps 14 to the top of the wall P. Thecleats 10 may be secured to the blocking B by stainless steel orsimilar fasteners 16 or similar material such as zinc coated fasteners, such as screws, and optionally washers 18. Thecleats 10 are principally dimensioned to accommodate the thickness of the parapet wall. Various representative sizes and configurations of the disclosed cleat are designated ascleat FIGS. 6-7 , 8-9 and 10-12. Thecleats 10 are preferably manufactured from 20 gauge to 16 gauge galvanized metal and, for some applications, 20 gauge to 16 gauge stainless steel. - The cleat has a central
planar web 20 of uniform length (generally commensurate with or slightly longer than the parapet wall is deep) ranging from approximately 4 inches to 36 inches and a uniform lateral width typically of approximately 8 inches to 16 inches, and more preferably approximately 12 inches. Aback side 22 integrally extends via a bend from one end of the web approximately perpendicular to the web and terminates in a lower laterally extending, outwardly facingflange 24. The front end of the web integrally connects via an upper compound bend forming anupper vertex 30 with afront side 32 which extends downwardly a distance greater than that ofback side 22 at an orientation approximately perpendicular to the plane of the web. Thefront side 32 terminates in a lower laterally extending, frontally facingflange 34. Thefront side 32 may also include a pair of laterally spacedslots 36. - The
cleat 10 has anintegral spring leaf 50 which extends upwardly from a plane defined by theweb 20 at a preferred angle of approximately 15-20°. In this embodiment, the distal end of the integral leaf has abent end portion 52.End portion 52 functions to reinforce theleaf 50 when the system is assembled. Theintegral leaf 50 provides an upward supporting bias against an installedoverlying coping cap 14, as will be further described. - With additional reference to
FIGS. 13 and 14 , an auxiliary diverter drain component (splice) 12 is dimensioned to mount over thecleat 10 in a substantially central nested relationship.Component 12 is typically manufactured from metal, such as aluminum, and is also available in 24 gauge galvanized metal. Thedrain component 12 includes acentral web 60 with laterally spacedmulti-folded sides 62, defining a channel. The sides cooperate to provide a drain recess or channel for diverting water which may flow through between adjacent coping caps 14, such as through the gap G, onto the roof (not illustrated). Aback panel 64 integrally extends from the central web in essentially a downward direction. Afront panel 66 integrally extends from the front of the central web and may include a forwardly facingterminal flange 68. Upon mounting the components over thecleat 10, thefront panel 66 is dimensioned to mate with thefront side 32 of the cleat in a substantially surface-to-surface relationship. A pair ofrearward protrusions 67 may be punched in thefront face 66 and are positioned so that when thecomponent 12 is nested over the cleat, theprotrusions 67 mate with theopenings 36 of the cleat to form a closely received, nested unitized assembly wherein the drain channel is oriented at a downward angle toward the rear, and thus upon installation, toward the roof. Thesplice component 12 and thecleat 10 may be attached via other methods known in the field, such as for example, adhesive, rivet, screws and staples. - With additional reference to
FIGS. 6 and 7 , thecleat 10A is adapted for a wall thickness of approximately 12 inches and accordingly has a length between the front and rear faces of approximately 12 inches. The cleat is formed from 20 gauge to 16 gauge galvanized material or 20 gauge to 16 gauge stainless steel and is cut, drilled, stamped, shaped and/or bent to the configurations illustrated in the drawings. Thecleat 10A includes a pair of 0.250 inch diameter holes 26 centered approximately 10 inches apart and 0.1875inch slots 28 centered approximately 10 inches apart adjacent theback side 22. Theholes 26 andslots 28 provide openings for fastening thecleat 10 to the blocking withfasteners 16. This cleat is also available for masonry conditions with the use of Tapcon® concrete fasteners or other masonry/concrete fasteners (seeFIG. 18 ). - The intermediate portion of the web is scored with a three sided rectilinear
U-shaped slot 21 so that a formed rectangular appendage may be bent upwardly along the open end of the U-shaped slot at an angle of approximately 15° to form thespring leaf 50. In this embodiment, the freedistal end 52 of the leaf is bent downwardly at an approximately 75° angle and extends approximately 0.375 inches. In preferred form, theleaf 50 is centrally positioned relative to the opposite lateral edges of the cleat. It should be appreciated that the angles and bends which form the described front, side, back side and the respective flanges are subsequently formed and configured. For the illustratedcleat 10A, theface side 32 extends 5.22 inches (with ranges from 2.5 inches to 12 inches for some embodiments) from thevertex 30 of the bend, and therear side 22 extends downwardly approximately 2.54 inches (with ranges from 2.5 inches to 10 inches for some embodiments) from the web at the rear. -
Cleat 10B inFIGS. 8 and 9 is adapted for a wall thickness of approximately 24 inches and also has a lateral dimension of approximately 12 inches. Forcleat 10B, twointegral leafs web 20. -
Cleat 10C illustrated inFIGS. 10-12 is adapted for a wall having a thickness of approximately 4 inches. In this embodiment, theleaf 50 is significantly shorter in length and has an angle relative to the plane of the web of approximately 20°. In this embodiment, no fasteners are required on theface side 32 ofcleat 10C. With reference toFIG. 12 , the front face side includesslots 33 for splice attachment through the use of a custom button tool designed to hold the splice in place. The height of the front face side in the vertical direction may vary from approximately 2.5 to 12 inches. - Nonlimiting representative dimensions for preferred embodiments of
cleats FIGS. 6-7 ,FIGS. 8-9 , andFIGS. 10-12 , are set forth in Table I below (units in inches): -
TABLE I DIMENSION CLEAT 10ACLEAT 10BCLEAT 10C h1 5.835 5.835 3.835 h2 5.221 5.221 3.221 h3 3.256 3.256 2.256 h4 2.539 2.539 1.539 l1 12.375 24.375 4.375 l2 11.221 23.221 3.221 d1 5.000 5.000 1.664 d2 5.000 5.000 4.500 d3 5.000 5.000 — d4 0.904 0.904 0.500 d5 5.625 5.625 2.188 d6 0.375 0.375 0.375 d7 — 13.091 — d8 5.375 5.375 1.938 d9 5.376 5.376 5.000 d10 10.000 10.000 10.000 - It will be appreciated that the aluminum joint splice or
diverter drain component 12 is initially nested over the galvanizedcleat 10 having the integral bias member in the form ofleaf 50, as best illustrated inFIG. 4 . This cleat-splice unit comprising the drain component and the cleat is then fastened as a single piece to the top of the parapet wall P, as herein described. The copingcap 14 is then forced downwardly over the fastened cleat and drain component so that the edge of the copingcap 14 is slightly off center and anadjacent cap 14 may then be positioned oppositely in edge-to-edge relationship, as shown inFIG. 3 , or in a slightly overlapping configuration (not depicted). The coping caps are retained by thetransverse hook 15 in cooperative engagement with the cleat and drain component flanges, 34 and 68, without requiring fasteners through the outer surfaces of the coping cap, thereby enhancing the fluid sealing integrity of the installed coping system. Each integral leaf, 50 and 54, functions as a spring to bias the cap upwardly and maintain a tight hook/flange engagement, and thus securedly attach the caps to the top of the wall. Naturally, multiple cleats/diverter drain components are spaced along the top of the wall and multiple coping caps are secured in the aforementioned edge-to-edge relationship. Thejoint splice components 12 andcleats 10 also eliminate the danger of fastening in the front faces over the edge of the roof for the engagement of coping. -
FIG. 15 depicts a preferred embodiment of thecoping system 100′ installed on a parapet wall of standard blocking material. Preferably the FACE dimension ranges in height from approximately 3 inches to approximately 12 inches, while the BACK dimension ranges in height from approximately 3 inches to approximately 6 inches. The FRONT face typically extends approximately 1-2 inches above the upper surface of the blocking material. Theleaf spring 50 extends relative to theweb 20 at an angle A, which ranges from approximately 15° to approximately 60°, and most preferably is approximately 30° prior to being compressed toward theweb 20 by thejoint splice component 12. Notably, as shown inFIG. 15 , the disclosed embodiments may also employ asupport channel 70 for improving the strength and stability of the system once installed and preventing downward sagging of any of the web elements. As shown, thesupport channel 70 may comprise a simple elongate C-channel member bent from metal, such as steel. Embodiments of the C-channel may be rearwardly angled slightly downward at an angle Ac, ranging from approximately 89° to 80°, and most preferably 88°, relative to the vertical. The slight downward angle accommodates the trajectory of thejoint splice 12 and upper surface of the copingcap 14. In practice, the depicted support channels are installed on walls having a relatively larger depth of preferably approximately 24 inches or greater to prevent or reduce sagging. -
FIGS. 16A and 16B depict thecleat 10 andjoint splice 12 attached prior to installation on a parapet wall. In practice, thepre-attached unit 13 depicted inFIG. 16B is provided commercially, and thereafter mounted over a membrane layer M on a parapet wall as a single integral unit prior to attachment of adjacent coping caps in a laterally offset position with the channel of the joint splice positioned underneath the adjacent edges of the respective caps, which may abut, overlap or define a small gap G of up to approximately 0.25 inches (seeFIG. 16C ). -
FIG. 17A depicts coping caps for use on inside and outside wall corners (14 a, 14 b), while 17B depicts end coping caps (14 c, 14 d). -
FIG. 18 depicts an alternate embodiment of the copingassembly 100″ configured for attachment primarily to masonry parapet walls Wm. The key distinguishing features of thecleat 10″ for masonry arepop rivets 72 for aiding in pre-attaching thesplice member 12″, which is configured with complimentary slots in the front panel. The copingcap 14 may be mounted over the installed cleat-splice unit. -
FIG. 19 depicts an embodiment of acleat member 10′″ with a pair of spaced spring leafs (50A and 50B). Here, both thefront leaf 50A andrear leaf 50B extend rearwardly from the web at approximately 30°, though the respective leafs may fall within the aforementioned approximate range of 15°-60°. Also, of note inFIG. 19 are several preferred dimensions for elements of thecleat member 10′″. -
FIG. 20 depicts a cleat member with short front and rear faces for use with shorter parapet walls, and includes representative dimension measurements. Similarly,FIG. 21 depicts a cleat member with longer front and rear faces for installation on a taller parapet wall. -
FIG. 22 shows another embodiment of the coping assembly for use primarily with a deeper wall wherein a substantially flat upper surface is preferred over a top surface that transitions downward toward the roof structure, like the previously depicted embodiments. In theFIG. 22 embodiment, the cleat member includes afront spring leaf 50A and arear spring leaf 50B. In contrast to the embodiment ofFIG. 19 , thefront spring leaf 50A extends forward from the web at an acute angle, while therear spring leaf 50B extends rearwardly in this embodiment. This particular dual spring embodiment has been shown to be particularly useful on curved or arched walls because the coping caps may be mounted thereon by pushing straight downward into a mounted position engaged with the front and rear flanges of the cleat, rather than first engaging the front flange and rotating the cap rearward onto the wall for engagement with the rear flange.FIG. 23 shows preferred dimensions of the cleat member of the embodiment of the coping assembly shown inFIG. 22 . As with all of the embodiments depicted and described herein, the particular dimensions noted are preferred and non-limiting. - Additional embodiments of the coping assembly exist featuring a cleat member that is not fastened to the front surface of the parapet wall with a fastener, such as a screw, nail or staple. This system is typically employed with walls having a shorter height, of up to approximately 6 inches.
- The disclosed coping assembly that includes the cleat-splice unit with integral spring leaf provides a substantial advantage over known coping systems. The disclosed assembly allows a two-step installation, which dramatically simplifies installation while improving safety. Some disclosed embodiments eliminate the dangerous practice of an installer hanging over a parapet wall to manually secure a coping cleat with a fastener in the front face. The pre-attached cleat-splice units streamline the installation process, by eliminating the need to split apart attached series of splice members and identify the proper sized splice to attach to a certain cleat.
- While a preferred embodiment has been set forth for purposes of illustration, the foregoing description should not be deemed a limitation of the invention herein. Accordingly, various modifications, adaptations and alternatives may occur to one skilled in the art without departing from the spirit of the invention and scope of the claimed coverage.
Claims (20)
1. A cleat for a coping assembly for use with a roof blocking unit, comprising:
a web having opposed front and rear ends;
a front side integrally extending from the front end to an outwardly extending distal flange;
a rear side integrally extending from the rear end to an outwardly extending distal flange; and
a first integral spring leaf formed from a bend in and extending from said web intermediate the front and rear ends in a direction opposite from the front and rear sides.
2. The cleat of claim 1 , wherein said spring leaf defines a plane that lies at an acute angle relative to the web.
3. The cleat of claim 2 , wherein the spring leaf includes a bend at the distal portion of the leaf.
4. The cleat of claim 2 , wherein the plane defined by the spring leaf lies at an angle of between approximately 15° and approximately 60° relative to the web.
5. The cleat of claim 1 , comprising a second integral spring leaf extending from said web at the same approximate angle relative to the web as the first spring leaf.
6. The cleat of claim 5 , wherein the second integral spring leaf extends from the web in the same relative direction as the first integral spring leaf.
7. The cleat of claim 5 , wherein the second integral spring leaf extends from the web in the opposite relative direction from the first integral spring leaf.
8. The cleat of claim 1 , wherein said spring leaf is formed as a cut in a portion of said web and upward bending of said portion.
9. The cleat of claim 8 , wherein said leaf is substantially rectilinear formed by a substantially U-shaped cut in the web defining an open end and bending along a substantially linear portion of the web at the open end.
10. The cleat of claim 1 , wherein the front end of the web transitions to the front side in a compound bend defining a vertex opposite the front side distal flange.
11. The cleat of claim 1 , wherein the web defines a plane that is substantially perpendicular to the front and rear sides.
12. The cleat of claim 1 , wherein said spring leaf defines a plane that lies at an angle of approximately 30° relative to the web.
13. A coping unit for a roof blocking unit comprising:
a cleat comprising a web having opposed first and second ends, a front side integrally extending from the first end to an outwardly extending distal flange, a rear side integrally extending from the second end, and an integral spring leaf extending from said web in a direction opposite from the front and rear sides; and
a diverter component comprising a central panel forming a diverter channel with a front end and a rear end, a front panel integrally extending from said front end, a rear panel integrally extending from said rear end; wherein
said diverter component is mounted over said cleat and said front panel engages said front side in a substantially surface-to-surface relationship, said rear panel engages said rear side in a substantially surface-to-surface relationship with the spring leaf biasing the central panel in the direction opposite from the front and rear sides, and said channel is disposed at an acute angle relative to said web.
14. The coping unit of claim 13 , wherein the channel is angled downward toward the rear side of the web.
15. The coping unit of claim 13 , wherein the first end transitions to the front side via a compound bend defining a vertex opposite the distal flange.
16. The coping unit of claim 15 , wherein the front panel extends from said front end via a bend that mates substantially with the vertex.
17. The coping unit of claim 13 , wherein the diverter channel is defined by a central web extending between opposite lateral edges, each lateral edge being bent in the direction opposite from the rear and front panels.
18. The coping unit of claim 13 , wherein the diverter component is substantially rigidly attached to the cleat in the mounted configuration without an external fastener.
19. The coping unit of claim 13 , wherein the diverter component front panel includes a distal flange disposed and angled to substantially abut the cleat first end flange.
20. A coping assembly installation comprising:
a roof blocking unit having a top surface extending between front and rear faces;
a fluid impermeable membrane disposed over said top surface;
a cleat mounted over said membrane and secured to said wall, the cleat having an integral spring leaf extending away from said top surface and a lower flange;
a diverter component mounted over said cleat and forming a drain recess disposed at an acute angle relative to said top surface; and
a pair of coping caps each having a lower hook-like flange and extending transversely between opposite edges disposed over said cleat and said diverter component in an offset arrangement, such that said drain recess is disposed substantially beneath adjacent edges of the coping caps, said spring leaf biasing said caps away from said top surface to urge the lower hook-like flange in each cap into engagement with the cleat flange.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US14/696,762 US20150345143A1 (en) | 2014-05-27 | 2015-04-27 | Coping Cleat and System for Roof Blocking Unit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US201462003250P | 2014-05-27 | 2014-05-27 | |
US14/696,762 US20150345143A1 (en) | 2014-05-27 | 2015-04-27 | Coping Cleat and System for Roof Blocking Unit |
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US20150345143A1 true US20150345143A1 (en) | 2015-12-03 |
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US14/696,762 Abandoned US20150345143A1 (en) | 2014-05-27 | 2015-04-27 | Coping Cleat and System for Roof Blocking Unit |
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Cited By (2)
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JP2021165493A (en) * | 2020-04-07 | 2021-10-14 | Ykk Ap株式会社 | Component arranged in joint portion |
NL2026044B1 (en) * | 2020-07-10 | 2022-03-11 | Zinkunie B V | Cleat and system for finishing part of a roof |
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US20030051428A1 (en) * | 2001-09-14 | 2003-03-20 | Metal-Era, Inc. Waukesha, Wisconsin | Coping assembly having a stone and mortar appearance |
US20050235578A1 (en) * | 2004-04-22 | 2005-10-27 | Heidler Charles W Jr | Roof wall coping system and method |
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US3024573A (en) * | 1958-08-18 | 1962-03-13 | Orman O Mckinley | Roofing structure |
US5251411A (en) * | 1992-04-15 | 1993-10-12 | W. P. Hickman Company | Roof edge anchoring devices for building structures |
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JP2021165493A (en) * | 2020-04-07 | 2021-10-14 | Ykk Ap株式会社 | Component arranged in joint portion |
JP7413130B2 (en) | 2020-04-07 | 2024-01-15 | Ykk Ap株式会社 | Joint part arrangement parts |
NL2026044B1 (en) * | 2020-07-10 | 2022-03-11 | Zinkunie B V | Cleat and system for finishing part of a roof |
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