US20060101777A1 - Insulating roofing system for flat roofs - Google Patents
Insulating roofing system for flat roofs Download PDFInfo
- Publication number
- US20060101777A1 US20060101777A1 US11/237,963 US23796305A US2006101777A1 US 20060101777 A1 US20060101777 A1 US 20060101777A1 US 23796305 A US23796305 A US 23796305A US 2006101777 A1 US2006101777 A1 US 2006101777A1
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- United States
- Prior art keywords
- panels
- corner panels
- roofing system
- central panel
- corner
- 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
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Classifications
-
- 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
- E04D13/16—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
- E04D13/1687—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure the insulating material having provisions for roof drainage
- E04D13/1693—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure the insulating material having provisions for roof drainage the upper surface of the insulating material forming an inclined surface
Definitions
- the present invention relates to a roofing system, and more specifically, to such a system for insulating flat roofs while facilitating water drainage therefrom.
- a lot of buildings, houses or the like are provided with substantially flat roofs.
- flat roofs are provided with a water drain for evacuating excess of water in at least one predetermined location.
- roofing systems for giving a slight slope to a flat roof in order to prevent the build-up thereon of standing water from heavy rain or melted snow.
- roofing systems generally include a plurality of panels or blocks disposed onto the surface of the roof.
- a well-known system consists of roofing saddles which are assembled on site using triangular panel units. Most of the time, each panel unit of a roofing saddle must be modified on site by cutting or trimming, as necessary, thus introducing a margin of error and resulting in a defective instalment.
- crickets made of a plurality of rectangular blocks of uniform thickness and rectangular blocks which are uniformly tapered from one side to another.
- the crickets are fabricated on the building site, therefore necessitating cutting blocks of uniform or tapered thickness and trimming blocks to fit. This means intensive labor operation and wastage of material from which the blocks are made.
- the present invention is designed to overcome deficiencies of the prior art discussed above.
- an insulating roofing system for a substantially flat roof structure said flat roof structure being provided with at least one drainage system, said insulating roofing system comprising:
- central panel with a substantially concave top surface, said central panel being provided with a through hole at a centre thereof, capable of operatively engaging said at least drainage system of the flat roof,
- a row of panels assembled around said central panel consisting of four tapered side panels each in an interlocking engagement with one of the sides of said central panel and four tapered corner panels in an interlocking engagement with adjacent said side panels, said tapered side and corner panels being shaped so as to define a constant slope to direct water away from outside edges of said side and corner panels towards the through hole of said central panel;
- central, side and corner panels all have substantially identical perimeter dimensions and said interlocking engagements use a system with shiplap joints wherein an upper protruding edge of each panel overlaps a lower protruding edge of an adjacent panel.
- a method for installing an insulating roofing system on a substantially flat roof structure said flat roof structure being provided with a drainage system, said method comprising the following steps:
- tapered side and corner panels are shaped so as to define a constant slope to direct water away from outside edges of said side and corner panels towards the through hole of said central panel;
- central, side and corner panels all have substantially identical perimeter dimensions and said interlocking engagement use a system with shiplap joints wherein an upper protruding edge of a panel overlaps a lower protruding edge of an adjacent panel.
- the present invention provides an insulating roofing system for substantially flat roofs having good drainage functions with easy, problem-free installation.
- the system according to the preferred embodiments of the invention can be used without effort and material waste as generated most of the time in this construction area. This is accomplished thanks to the simple geometric relationship between the components of the present roofing system.
- the present roofing system is also versatile and affords various structural alternatives to accommodate a variety of drain configurations.
- FIG. 1 is a perspective view of a roofing system according to a preferred embodiment of the present invention.
- FIG. 2 is a different perspective view of the roofing system shown in FIG. 1 , with one of its panels disassembled.
- FIG. 3 a is a perspective view of one of the central panel of the roofing system shown in FIG. 1 ;
- FIG. 3 b is a side view of the central panel of FIG. 3 a;
- FIG. 3 c is a cross-sectional view taken along lines A-A of FIG. 3 b.
- FIG. 4 a is a perspective view of a corner panel of the roofing system shown in FIG. 1 ;
- FIG. 4 b is a top view of the corner panel of FIG. 4 a;
- FIG. 4 c is a side view of the corner panel of FIG. 4 a.
- FIG. 5 a is a perspective view of a side panel of the roofing system of FIG. 1 ;
- FIG. 5 b is different perspective view of the same side panel;
- FIG. 5 c is a side view of the side panel of FIG. 5 a;
- FIG. 5 d is a perspective view of two side panels of the roofing system in an interlocking position.
- FIG. 6 is a plan top view of a roof covered by the roofing system according to a preferred embodiment of the present invention.
- FIG. 7 is a plan top view of a roof covered by the roofing system according to another preferred embodiment of the present invention.
- FIGS. 1 to 5 there is shown an insulating roofing system 10 designed for use with buildings or houses having a substantially flat roof.
- substantially flat it will be understood by one skilled in the art that the roof according to the present invention need not be precisely horizontally planar, but does give the visual impression of being flat.
- the roof is usually provided with a drainage system, such as conventional water pipes.
- the insulating roofing system 10 of the present invention typically includes a plurality of panels, defined below as a central panel 12 , side panels 18 and corner panels 20 .
- all panels are made of waterproof insulating material such as, but not limited to, expanded and extruded polystyrene, polyisocyanurate, urethane, fibreglass, fibreboard and mineral fibre.
- the roofing system includes a central panel 12 with a substantially concave top surface 14 .
- the central panel is symmetric and has a constant slope of about 2% (see FIGS. 3 b and 3 c ).
- the central panel 12 is provided with a through hole 16 at its centre (see FIG. 3 a ) and is capable of operatively engaging with the drainage system of a flat roof, such as a water drain pipe. Any appropriate known manner of connecting the through hole 16 to an existing, modified or new drainage system may be used, as will be appreciated by one skilled in the art.
- the roofing system 10 also includes a row of panels assembled around the central panel 12 , consisting of side panels 18 interlocked with the central panel 12 and corner panels 20 interlocked with adjacent side panels 18 .
- each side panels 18 preferably has a tapered shape when seen from the side, so that its top surface defines a slight slope from the outside edge 32 of the panel, towards its inside edge 34 which is to be connected to the central panel.
- This slope is preferably constant and should be sufficient to guide water towards the central panel without interfering with the visually “flat” aspect of the roof. In the preferred embodiment, it is of about 1%.
- the corner panels are better seen in FIGS. 4 a, 4 b and 4 c.
- they are designed in such a way that their top surface 24 is somewhat invaginated along the line 26 defined between the outermost 28 and innermost 30 corners thus allowing the water to be drained in direction of the central panel 12 (see FIGS. 4 a and 4 b ).
- any other shape achieving the same result is however considered within the scope of the present invention.
- the central, side and corner panels have a perimeter dimension of at about 1 ⁇ 1 m. They are preferably square or rectangular shaped, but may be given another form according to the design of a particular roof.
- FIGS. 2 and 5 d it can be seen that the panels of the roofing system are joined together in such a way that each of the panels overlaps the one next to it in a shiplap joint, and not in a blunt end joint.
- an upper protruding edge 40 of a panel overlaps a lower protruding edge 42 of an adjacent panel.
- This way of interlocking the panels of the roofing system also called with “cohesive panel edges” allows to efficiently joining the panels together and offers the advantage of cutting thermal-bridges to ensure a long lasting insulation of the flat roof.
- the user will first fix and engage the central panel 12 with the drainage system of the roof. Then, in a clockwise manner, starting with a side panel 18 , the user will secure a first side panel 18 to the side of the central panel 12 and secure a corner panel 20 to the side of the first side panel 18 . Then the user will secure a second side panel to the next available side of the central panel 12 and so forth until a first row of panels is completed around the central panel 12 .
- one or more additional rows of corner and side panels may of course be provided.
- a plurality of fully completed additional rows of panels may be concentrically assembled around the first row of panels placed around the central panel (sump), consisting of side panels (A, B, C, D and E) and corner panels (AX, BX, CX, DX and EX), so as to completely cover the whole surface of a flat roof.
- the second row B will include three side panels on each side, for a total of twelve side panels; the third row C includes five side panels per side, the fourth row D includes seven, and so on.
- a more complex configuration is shown in FIG.
- a plurality of roofing systems each having a central panel (S 1 or S 2 ) provided with a through hole at its centre, and a plurality of fully completed or partially completed rows of panels consisting of side panels (A, B, C, D, E, F, G, H) and corner panels (AX, BX, CX, DX, CY, DY, EY, FY, GY, HY).
- Each of central panel (S 1 or S 2 ) is connected to the drainage system of the flat roof via their through hole, thus allowing the drainage of water from various locations of the flat roof.
- all panels of the present insulation roof system may be cut (see for example side panels C, D and E and corner panels CX, DX and FY on the edges of the flat roof in FIG. 7 ), factory laminated to other roofing board or shortened to comply with the size and configuration of the roof.
- the roofing system may be fastened by means known to one skilled in the art to the roof and then covered with a layer of asphalt based compounds or any other roof coverings which are suitable for roofs having a slope gradient as contemplated by the present invention.
Abstract
Description
- The present invention relates to a roofing system, and more specifically, to such a system for insulating flat roofs while facilitating water drainage therefrom.
- A lot of buildings, houses or the like are provided with substantially flat roofs. Typically, such flat roofs are provided with a water drain for evacuating excess of water in at least one predetermined location.
- In this connection, there are known in the art systems for giving a slight slope to a flat roof in order to prevent the build-up thereon of standing water from heavy rain or melted snow. Such roofing systems generally include a plurality of panels or blocks disposed onto the surface of the roof. A well-known system consists of roofing saddles which are assembled on site using triangular panel units. Most of the time, each panel unit of a roofing saddle must be modified on site by cutting or trimming, as necessary, thus introducing a margin of error and resulting in a defective instalment.
- Another example of a roofing system for flat roof consists of crickets made of a plurality of rectangular blocks of uniform thickness and rectangular blocks which are uniformly tapered from one side to another. The crickets are fabricated on the building site, therefore necessitating cutting blocks of uniform or tapered thickness and trimming blocks to fit. This means intensive labor operation and wastage of material from which the blocks are made.
- Moreover, one known drawback of such known systems concerns the tightness of blunt-end joints between the panels or blocks. Overtime, these joints, which are usually filled with a compound such as adhesives or silicone based compounds, may become deteriorated from exposure to environmental elements and therefore gradually causing the roof to loose some of its insulating properties, and creating what are called “thermal-bridges”.
- It is therefore an object of the present invention to provide an insulating waterproofing system for flat roofs made of prefabricated panels, which requires no on site trimming.
- It is also an object of this invention to provide a roofing system including prefabricated panels easily assembled by means of interlocks, preventing thermal bridges to affect the roofing system.
- The present invention is designed to overcome deficiencies of the prior art discussed above.
- In accordance with a first aspect of the present invention, there is provided an insulating roofing system for a substantially flat roof structure, said flat roof structure being provided with at least one drainage system, said insulating roofing system comprising:
- a central panel with a substantially concave top surface, said central panel being provided with a through hole at a centre thereof, capable of operatively engaging said at least drainage system of the flat roof,
- a row of panels assembled around said central panel consisting of four tapered side panels each in an interlocking engagement with one of the sides of said central panel and four tapered corner panels in an interlocking engagement with adjacent said side panels, said tapered side and corner panels being shaped so as to define a constant slope to direct water away from outside edges of said side and corner panels towards the through hole of said central panel;
- wherein said central, side and corner panels all have substantially identical perimeter dimensions and said interlocking engagements use a system with shiplap joints wherein an upper protruding edge of each panel overlaps a lower protruding edge of an adjacent panel.
- In accordance with a second aspect of the present invention, there is also provided a method for installing an insulating roofing system on a substantially flat roof structure, said flat roof structure being provided with a drainage system, said method comprising the following steps:
- a) providing a central panel with a substantially concave top surface, said central panel being provided with a through hole at a centre thereof;
- b) providing a plurality of tapered side panels having a top surface with a constant slope;
- c) providing a plurality of tapered corner panels designed so that their top surface is invaginated along a line defined between the outermost and the innermost corners of said corner panels;
- d) engaging and fixing said central panel with said drainage system of the flat roof structure;
- e) in a clockwise manner, successively assembling in an interlocking engagement side panels to the sides of said central panel and corner panels with adjacent said side panels, forming a first row of panels around said central panel;
- wherein said tapered side and corner panels are shaped so as to define a constant slope to direct water away from outside edges of said side and corner panels towards the through hole of said central panel; and
- wherein said central, side and corner panels all have substantially identical perimeter dimensions and said interlocking engagement use a system with shiplap joints wherein an upper protruding edge of a panel overlaps a lower protruding edge of an adjacent panel.
- Advantageously, there present invention provides an insulating roofing system for substantially flat roofs having good drainage functions with easy, problem-free installation. In addition, the system according to the preferred embodiments of the invention can be used without effort and material waste as generated most of the time in this construction area. This is accomplished thanks to the simple geometric relationship between the components of the present roofing system. The present roofing system is also versatile and affords various structural alternatives to accommodate a variety of drain configurations.
- Other objects, features and advantages of the invention will be readily appearing from the following detailed description of the preferred embodiments thereof taken in conjunction with the drawings.
-
FIG. 1 is a perspective view of a roofing system according to a preferred embodiment of the present invention. -
FIG. 2 is a different perspective view of the roofing system shown inFIG. 1 , with one of its panels disassembled. -
FIG. 3 a is a perspective view of one of the central panel of the roofing system shown inFIG. 1 ;FIG. 3 b is a side view of the central panel ofFIG. 3 a;FIG. 3 c is a cross-sectional view taken along lines A-A ofFIG. 3 b. -
FIG. 4 a is a perspective view of a corner panel of the roofing system shown inFIG. 1 ;FIG. 4 b is a top view of the corner panel ofFIG. 4 a;FIG. 4 c is a side view of the corner panel ofFIG. 4 a. -
FIG. 5 a is a perspective view of a side panel of the roofing system ofFIG. 1 ;FIG. 5 b is different perspective view of the same side panel;FIG. 5 c is a side view of the side panel ofFIG. 5 a;FIG. 5 d is a perspective view of two side panels of the roofing system in an interlocking position. -
FIG. 6 is a plan top view of a roof covered by the roofing system according to a preferred embodiment of the present invention. -
FIG. 7 is a plan top view of a roof covered by the roofing system according to another preferred embodiment of the present invention. - Referring now to FIGS. 1 to 5, there is shown an
insulating roofing system 10 designed for use with buildings or houses having a substantially flat roof. By “substantially flat”, it will be understood by one skilled in the art that the roof according to the present invention need not be precisely horizontally planar, but does give the visual impression of being flat. The roof is usually provided with a drainage system, such as conventional water pipes. - As shown in
FIG. 1 , theinsulating roofing system 10 of the present invention typically includes a plurality of panels, defined below as acentral panel 12,side panels 18 andcorner panels 20. In the preferred embodiment, all panels are made of waterproof insulating material such as, but not limited to, expanded and extruded polystyrene, polyisocyanurate, urethane, fibreglass, fibreboard and mineral fibre. - With reference to
FIGS. 3 a, 3 b and 3 c, and as mentioned above, the roofing system includes acentral panel 12 with a substantially concavetop surface 14. Preferably, the central panel is symmetric and has a constant slope of about 2% (seeFIGS. 3 b and 3 c). Thecentral panel 12 is provided with athrough hole 16 at its centre (seeFIG. 3 a) and is capable of operatively engaging with the drainage system of a flat roof, such as a water drain pipe. Any appropriate known manner of connecting the throughhole 16 to an existing, modified or new drainage system may be used, as will be appreciated by one skilled in the art. - Referring back to
FIG. 1 , theroofing system 10 also includes a row of panels assembled around thecentral panel 12, consisting ofside panels 18 interlocked with thecentral panel 12 andcorner panels 20 interlocked withadjacent side panels 18. - Referring to
FIGS. 5 a, 5 b and 5 c, it can be seen that eachside panels 18 preferably has a tapered shape when seen from the side, so that its top surface defines a slight slope from the outside edge 32 of the panel, towards its inside edge 34 which is to be connected to the central panel. This slope is preferably constant and should be sufficient to guide water towards the central panel without interfering with the visually “flat” aspect of the roof. In the preferred embodiment, it is of about 1%. - The corner panels are better seen in
FIGS. 4 a, 4 b and 4 c. In the present embodiment, they are designed in such a way that theirtop surface 24 is somewhat invaginated along theline 26 defined between the outermost 28 and innermost 30 corners thus allowing the water to be drained in direction of the central panel 12 (seeFIGS. 4 a and 4 b). It will be appreciated that any other shape achieving the same result is however considered within the scope of the present invention. - In a preferred embodiment, the central, side and corner panels have a perimeter dimension of at about 1×1 m. They are preferably square or rectangular shaped, but may be given another form according to the design of a particular roof.
- Referring to
FIGS. 2 and 5 d, it can be seen that the panels of the roofing system are joined together in such a way that each of the panels overlaps the one next to it in a shiplap joint, and not in a blunt end joint. In this type of connection, an upperprotruding edge 40 of a panel overlaps a lowerprotruding edge 42 of an adjacent panel. This way of interlocking the panels of the roofing system, also called with “cohesive panel edges” allows to efficiently joining the panels together and offers the advantage of cutting thermal-bridges to ensure a long lasting insulation of the flat roof. - Referring back to
FIG. 1 , a preferred method of installing an insulating roof system as disclosed above will now be explained. In accordance with this method, for on site installation of theroofing system 10, the user will first fix and engage thecentral panel 12 with the drainage system of the roof. Then, in a clockwise manner, starting with aside panel 18, the user will secure afirst side panel 18 to the side of thecentral panel 12 and secure acorner panel 20 to the side of thefirst side panel 18. Then the user will secure a second side panel to the next available side of thecentral panel 12 and so forth until a first row of panels is completed around thecentral panel 12. - In order to cover the whole surface of a roof, one or more additional rows of corner and side panels may of course be provided. In one possible embodiment, shown in
FIG. 6 , a plurality of fully completed additional rows of panels may be concentrically assembled around the first row of panels placed around the central panel (sump), consisting of side panels (A, B, C, D and E) and corner panels (AX, BX, CX, DX and EX), so as to completely cover the whole surface of a flat roof. In the illustrated embodiment, the second row B will include three side panels on each side, for a total of twelve side panels; the third row C includes five side panels per side, the fourth row D includes seven, and so on. A more complex configuration is shown inFIG. 7 , where a plurality of roofing systems are used each having a central panel (S1 or S2) provided with a through hole at its centre, and a plurality of fully completed or partially completed rows of panels consisting of side panels (A, B, C, D, E, F, G, H) and corner panels (AX, BX, CX, DX, CY, DY, EY, FY, GY, HY). Each of central panel (S1 or S2) is connected to the drainage system of the flat roof via their through hole, thus allowing the drainage of water from various locations of the flat roof. - Advantageously, all panels of the present insulation roof system may be cut (see for example side panels C, D and E and corner panels CX, DX and FY on the edges of the flat roof in
FIG. 7 ), factory laminated to other roofing board or shortened to comply with the size and configuration of the roof. - Finally, once the flat roof has been covered with the roofing system of the present invention, the roofing system may be fastened by means known to one skilled in the art to the roof and then covered with a layer of asphalt based compounds or any other roof coverings which are suitable for roofs having a slope gradient as contemplated by the present invention.
- Although preferred embodiments of the present invention have been described in detail herein and illustrated in the accompanying drawings, it is to be understood that the invention is not limited to these precise embodiments and that various changes and modifications may be effected therein without departing from the scope or spirit of the present invention.
Claims (14)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2,482,878 | 2004-09-29 | ||
CA002482878A CA2482878A1 (en) | 2004-09-29 | 2004-09-29 | Insulating roofing system for flat roofs |
Publications (1)
Publication Number | Publication Date |
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US20060101777A1 true US20060101777A1 (en) | 2006-05-18 |
Family
ID=36121736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/237,963 Abandoned US20060101777A1 (en) | 2004-09-29 | 2005-09-29 | Insulating roofing system for flat roofs |
Country Status (2)
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US (1) | US20060101777A1 (en) |
CA (1) | CA2482878A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090277113A1 (en) * | 2008-05-09 | 2009-11-12 | Thermapan Structural Insulating Panels Inc. | Structural insulating panel and flat roof structure employing same |
US20110072736A1 (en) * | 2009-09-30 | 2011-03-31 | Atlas Roofing Corporation | Drainage members for flat roofs and methods of making same |
US20120125450A1 (en) * | 2010-11-23 | 2012-05-24 | Hunter Panels Llc | Roof sump structure |
US20150068145A1 (en) * | 2012-05-16 | 2015-03-12 | Grade Group As | Surface covering system and method for producing such a system |
US20190024376A1 (en) * | 2017-07-24 | 2019-01-24 | Firestone Building Products Company, Llc | Molded Roofing Inserts, Roofs Therewith, And Methods For Installing The Same |
US20190145095A1 (en) * | 2014-09-17 | 2019-05-16 | Grade Group As | Surface covering system and methods for preparing such a system |
US10988919B2 (en) * | 2018-11-20 | 2021-04-27 | Dlp Limited | Shower floor assembly |
US20210381229A1 (en) * | 2020-06-05 | 2021-12-09 | Johns Manville | Non-wicking underlayment board |
US20210381259A1 (en) * | 2020-06-05 | 2021-12-09 | Johns Manville | Non-wicking underlayment board |
US11293189B2 (en) * | 2019-01-14 | 2022-04-05 | Ebbe America Lc | Flooring system for use in a sloped floor |
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US5222337A (en) * | 1988-09-26 | 1993-06-29 | Rockwool International A/S | Insulation of flat roofs and simultaneous construction of a gradient for positive drainage of the roofing placed on the insulation |
US5373669A (en) * | 1992-08-06 | 1994-12-20 | Paquette; Jean-Paul | Flat-roof roofing with tapered corrugated sheet |
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-
2004
- 2004-09-29 CA CA002482878A patent/CA2482878A1/en not_active Abandoned
-
2005
- 2005-09-29 US US11/237,963 patent/US20060101777A1/en not_active Abandoned
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US6185889B1 (en) * | 1999-02-11 | 2001-02-13 | Dan P. Gilgan | Flat style roof drainage system and low point column head |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090277113A1 (en) * | 2008-05-09 | 2009-11-12 | Thermapan Structural Insulating Panels Inc. | Structural insulating panel and flat roof structure employing same |
US20110072736A1 (en) * | 2009-09-30 | 2011-03-31 | Atlas Roofing Corporation | Drainage members for flat roofs and methods of making same |
US20120125450A1 (en) * | 2010-11-23 | 2012-05-24 | Hunter Panels Llc | Roof sump structure |
US8365487B2 (en) * | 2010-11-23 | 2013-02-05 | Hunter Panels Llc | Roof sump structure |
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US20150068145A1 (en) * | 2012-05-16 | 2015-03-12 | Grade Group As | Surface covering system and method for producing such a system |
US20190145095A1 (en) * | 2014-09-17 | 2019-05-16 | Grade Group As | Surface covering system and methods for preparing such a system |
US20190024376A1 (en) * | 2017-07-24 | 2019-01-24 | Firestone Building Products Company, Llc | Molded Roofing Inserts, Roofs Therewith, And Methods For Installing The Same |
US10988919B2 (en) * | 2018-11-20 | 2021-04-27 | Dlp Limited | Shower floor assembly |
US11293189B2 (en) * | 2019-01-14 | 2022-04-05 | Ebbe America Lc | Flooring system for use in a sloped floor |
US20210381229A1 (en) * | 2020-06-05 | 2021-12-09 | Johns Manville | Non-wicking underlayment board |
US20210381259A1 (en) * | 2020-06-05 | 2021-12-09 | Johns Manville | Non-wicking underlayment board |
US11685140B2 (en) * | 2020-06-05 | 2023-06-27 | Johns Manville | Non-wicking underlayment board |
US11773586B2 (en) * | 2020-06-05 | 2023-10-03 | Johns Manville | Non-wicking underlayment board |
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