US3585766A - Flashing construction - Google Patents

Flashing construction Download PDF

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Publication number
US3585766A
US3585766A US3585766DA US3585766A US 3585766 A US3585766 A US 3585766A US 3585766D A US3585766D A US 3585766DA US 3585766 A US3585766 A US 3585766A
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Prior art keywords
seat
flashing
cant
roof
edge
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Expired - Lifetime
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Leslie Guy Jamieson
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Leslie Guy Jamieson
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage; Sky-lights
    • E04D13/15Trimming strips; Edge strips; Fascias; Expansion joints for roofs
    • E04D13/155Trimming strips; Edge strips; Fascias; Expansion joints for roofs retaining the roof sheathing

Abstract

This invention relates to a flashing construction for a flat roof wherein a seat for a cant is first rigidly connected along the marginal edge of the roof. The cant is subsequently located in the seat. A flexible weatherproof flashing membrane is secured to the upper edge of the seat and adapted to cover the cant and merge with the roofing felt and roofing pitch to form a weathertight flashing construction. The principal advantage of the construction is that the roofing operation can be carried out by the roofers without the necessity of assistance from carpentry and other trades.

Description

United States Patent I 72] inventor Leslie Guy .Inmieson 178 King Street, Weston, Ontario, Canada [2 1] Appl. No. 831,627
[22] Filed June 9, 1969 [4S] Patented June 22, 1971 [32] Priority Feb. 21, 1969 [33] Canada [54] FLASHING CONSTRUCTION 8 Claims, 3 Drawing Figs.
[52] U.S. Cl. 52/60, 5 2/94 [511 lnt.Cl E04d 13/15 [50] Field of Search 52/60, 58, 96, 94
[56] References Cited UNITED STATES PATENTS l.396.732 l l/ i921 Cramer 52/60 2,984,049 5/ l96l Reddy 52/60 3,404,495 10/ l 968 Simpson 52/58 FOREIGN PATENTS 481,879 3/1952 Canada 52/94 Primary Examiner-Price C. Faw, Jr. Attorney-Fetherstonhaugh & Co.
ABSTRACT: This invention relates to a flashing construction for a flat roof wherein a seat for a cant is first rigidly connected along the marginal edge of the roof. The cant is subsequently located in the seat. A flexible weatherproof flashing membrane is secured to the upper edge of the seat and adapted to cover the cant and merge with the roofing felt and roofing pitch to form a weathertight flashing construction. The principal advantage of the construction is that the roofing operation can be carried out by the roofers without the necessity of assistance from carpentry and other trades.
PATENTED M22 I971 SHEET 1 DF 2 INV/iN/(IR. LESLIE GUY JAM IESON wfi/ay/fa ATTORNEYS PATENTED JUN22 IHTI SHEET 2 OF 2 FIG.3
INVIiN'IUR. LESLIE G. JAM l ESON ATTORNEYS FLASHING CONSTRUCTION This invention relates to a flashing construction for a flat roof.
Flat roofs are usually waterproofed by means of several layers of roofing felt overlaid with a mixture of pitch and gravel. It is usual to provide an upwardly sloping cant at the edges of the roof so that the roof, in effect, forms a basin. The cant must, of course, be flashed and means must be provided for making the flashing waterproof under all weather conditions. The roofing felts which underlie the pitch and gravel mixture terminate at the cant and special care must be taken to ensure that the termination of the felts is not open to weather and is not likely to become open to weather.
While there has been no serious difficulty in achieving a weathertight flashing construction at the edge of a flat roof in the past, it has beenachieved only at considerable expense and inconvenience. The most usual method of constructing a roof flashing of this type involves the cooperation of at least the carpentry and the roofing trades and there is often difficulty in arranging for suitable time schedules. The carpenter will complete his work and the roofer is often not immediately available. This results in time lost in the building construction. Metal cant constructions, which do not require the cooperation of the carpentry trade, have been devised but they are complex and costly and have received little general acceptance. In addition to being complex and costly, they do not have the insulating value of the more solid fibrous cant construction.
This invention overcomes these disadvantages and provides a flashing construction for a flat roof that can be very simply applied and that does not require cooperation between carpentry and roofing trades in order to construct the roof flashing. The flashing is secure and waterproof and of good appearance. It is an improved flashing at a lesser cost.
Generally speaking, a flashing construction for a flat roof, according to this invention, comprises a seat for a cant, the seat having a base adapted for securement to a roof deck and a wall extending upwardly from the base, the base and wall being adapted to embrace a cant in an operative position. It has a flexible weatherproof flashing membrane and securing means along one edge of the membrane for securement to the wall of the seat adjacent the top thereof. The invention and its manner of use will be apparent after reading the following detailed specification, read in conjunction with the drawings.
In the drawings:
FIG. 1 is a length of flashing construction according to this invention, partially exploded;
FIG. 2 is a sectional view of the flashing in assembled condition taken on the line 2-2 of FIG. 1; and
FIG. 3 is a sectional view of an alternative flashing construction.
The flashing construction, according to this invention, is adapted for securement to the edge of a flat roof l and it comprises a seat, generally indicated by the numeral 12, for a cant 14. Seat 12 consists of a piece of sheet metal that is L- shaped in longitudinal cross section and has a base 15 secured to the edge of a roof deck by means of nails, as at 16 and a wall 18 that extends upwardly from the base 15. Slotted holes 17 are provided for nails 16 to allow for roof expansion/contraction. Triangular-shaped supports maintain the base 15 and the wall 18 in L-shaped configuration.
The cant 14 is made from a fibrous insulating material or wood in sections that are adapted to fit between the supports 20. In the drawings, only a portion of a section of the seat member 12 is illustrated. In practice, the sections of seat member 12 are about 10 feet long and the brackets 20 are spaced apart 4 feet. The seat sections are laid, edge to edge, along the perimeter of the roof 10. Adjustable comer sections can be provided for the comers. The invention is not concemed with the building up of a series of seat members but with the flashing construction itself and the extension of the members into a group along the edge of a roof has not been illustrated in detail.
As indicated above, it is usual in the construction of a flat roof to first lay several layers of roofing felt. These layers of roofing felt are indicated in the drawings by the numerals 22, 23 and 24. Although three layers are shown, more layers are sometimes employed. Their edges are brought up over the cant l4 and, in order to secure a weatherproof joint at the edges, two layers of felt flashing 25 are provided reaching from above the cant 14 adjacent wall 18 to a short distance beyond base 15 on top of roofing felt 22. A flexible weatherproof flashing membrane 26 is secured along the upper edge of the wall 18 of the seat member 12, extending down over the felts as indicated. The roofing compound of pitch and gravel is then poured over the overlying weatherproof flashing membrane 26, flashing felts 25, and roofing felts 22, 23, 24, as shown at 29in FIG. 2.
The flashing membrane 26 is gripped along one edge thereof between the jaws 28 and 30 of the clip member 32. Clip member 32, in use, secures the membrane to the upper edge of the wall 18 of the seat 12. It will be apparent that the seat 12, the cant sections and the weatherproof flashing membrane 26 can all be installed from roof level without the need for scaffolding by the roofing crew. There is no necessity for detailed fitting of a wooden cant member by a carpentry crew.
A facia assembly that consists of a vertical member 34 and a deck extension 36 fit onto the seat member, as indicated in FIG. 2, the vertical member slipping over clip 32 and wall 18 at the top, and the deck extension 36 being slipped into place from the end. Extension 36 is retained by lip 37 on facia 34 and lip 39 on wall 18.
FIG. 3 of the drawings shows an alternative flashing construction according to the invention. In this case, the seat is L- shaped and has a base 40 and a back 42. The base 40 is fastened at longitudinally spaced apart points to the corrugated metal deck 44 of a roof as at 46. Sheets of fibrous insulation 48 overlay the roof deck 44 and the base 40 of the seat. The cant 50 overlays the insulation 48 and, as before, is positively located in position by the wall 42 and its related base 40 of the L-shaped seat. Spaced apart brackets similar to brackets 20 of FIG. 1 are provided for rigidifying the seat construction.
Two layers of flashing asbestos felt 52 overlay the sheets of insulation 48 and a weather tight flexible flashing membrane 54 is secured to the upper edge of the wall 42 of the seat by means of a clamping arrangement similar to the one 32 shown in FIG. 1.
The facia in FIG. 3 comprises a bracket 56 fastened to the wall 42 and a clip on ornamental facia 58.
Embodiments of the flashing construction of this invention, other than the ones illustrated, will be apparent to those skilled in the an. The principle of the invention is to provide a flashing having a seat for a cant member that can be simply attached to a roof decking and that has means for securing a weatherproof flashing membrane.
What I claim as my invention is:
l. A flashing construction for a flat roof comprising a seat for a cant, said seat having a seat base disposed to overlie a roof deck and a seat wall extending upwardly from said seat base, a cant located in an operative position with respect to said seat, a flexible weatherproof flashing membrane disposed to overlie said cant, securing means for securing one edge of said flashing membrane to said seat wall adjacent the upper edge thereof, and facia means assembled on said seat wall on the other side thereof from said membrane, the facia means including an upper portion shaped to overlie the upper edge of the seat wall and cover said one edge of said flashing membrane;
2. A flashing construction for a flat roof, as claimed in claim 1, in which said seat is L-shaped in longitudinal cross section, said seat base being the base of said L and said seat wall being the back of said L.
3. A flashing construction for aflat roof, as claimed in claim 1, in which said cant is a solid insulating material.
4. A flashing construction for a flat roof, as claimed in claim 1, in which said seat base and said seat wall are maintained in L formation by brackets spaced apart along the length of said seat.
5. A flashing construction for a flat roof, as claimed in claim roof.
6. A flashing construction for a flat roof, as claimed in claim 5, in which said seat L-shaped in longitudinal cross section, said seat base being the base of said L and said seat wall being the back of said L.
7. A flashing construction for a flat roof, as claimed in claim 5, in which said cam is a solid insulating material.
8. A flashing construction for a flat roof, as claimed in claim 1, in which said securing means for securing said flashing membrane to said seat wall comprises clip means clamped over the upper edge of said seat wall and underlying the shaped upper portion of said facia means.

Claims (8)

1. A flashing construction for a flat roof comprising a seat for a cant, said seat having a seat base disposed to overlie a roof deck and a seat wall extending upwardly from said seat base, a cant located in an operative position with respect to said seat, a flexible weatherproof flashing membrane disposed to overlie said cant, securing means for securing one edge of said flashing membrane to said seat wall adjacent the upper edge thereof, and facia means assembled on said seat wall on the other side thereof from said membrane, the facia means including an upper portion shaped to overlie the upper edge of the seat wall and cover said one edge of said flashing membrane;
2. A flashing construction for a flat roof, as claimed in claim 1, in which said seat is L-shaped in longitudinal cross section, said seat base being the base of said L and said seat wall being the back of said L.
3. A flashing construction for a flat roof, as claimed in claim 1, in which said cant is a solid insulating material.
4. A flashing construction for a flat roof, as claimed in claim 1, in which said seat base and said seat wall are maintained in L formation by brackets spaced apart along the length of said seat.
5. A flashing construction for a flat roof, as claimed in claim 1, in which said seat is mounted at the marginal edge of a flat roof and said cant is located by said seat wall in an operative position with respect to said seat, and said securing means secures an edge of said flashing membrane to said seat wall adjacent the upper edge thereof, said flashing membrane overlying said cant and extending onto the flat portion of said roof and a weatherproof compound overlying said roof and the marginal portion of said flexible membrane that overlies said roof.
6. A flashing construction for a flat roof, as claimed in claim 5, in which said seat L-shaped in longitudinal cross section, said seat base being the base of said L and said seat wall being the back of said L.
7. A flashing construction for a flat roof, as claimed in claim 5, in which said cant is a solid insulating material.
8. A flashing construction for a flat roof, as claimed in claim 1, in which said securing means for securing said flashing membrane to said seat wall comprises clip means clamped over the upper edge of said seat wall and underlying the shaped upper portion of said facia means.
US3585766D 1969-02-21 1969-06-09 Flashing construction Expired - Lifetime US3585766A (en)

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CA43585 1969-02-21

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GB (1) GB1216025A (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3735540A (en) * 1970-12-10 1973-05-29 K Thaler Building fascia
US3766694A (en) * 1971-02-17 1973-10-23 E Minialoff Fascia structure
US3817009A (en) * 1972-01-31 1974-06-18 Dynamit Nobel Ag Aero-dynamic roof
US4241549A (en) * 1978-09-07 1980-12-30 Mm Systems Corporation Conjoint facia, flashing and water dam
US4259817A (en) * 1979-02-05 1981-04-07 Elliott Frank S Insulative roof apparatus
JPS56119810U (en) * 1980-02-13 1981-09-12
US4404777A (en) * 1981-07-31 1983-09-20 Mm Systems Corporation Conjoint facia, hood and water dam
US4439956A (en) * 1982-08-02 1984-04-03 Prawl Engineering Corporation Press lock fascia-cant system
US4483112A (en) * 1981-12-11 1984-11-20 Henry E. Millson, Jr. Roof edge system
US5189853A (en) * 1990-06-04 1993-03-02 W. P. Hickman Company Edge sealing devices for building structures
US5251411A (en) * 1992-04-15 1993-10-12 W. P. Hickman Company Roof edge anchoring devices for building structures
US5590498A (en) * 1995-04-05 1997-01-07 Mokres; James A. Roofing cant strip
US20070261346A1 (en) * 2006-05-15 2007-11-15 Kelly Thomas L Wind and water resistant back wrap roof edge termination
US8413386B2 (en) 2003-11-18 2013-04-09 Daryl Fazekas Building protection structures and methods for making and using the protection structures
US8522508B1 (en) 2010-03-04 2013-09-03 Pacc Systems I.P., Llc Flashing support cant for a wall assembly and associated method
US9303414B1 (en) * 2014-02-10 2016-04-05 Daryl B. Keiser Grain bin bolt cover
US10060126B2 (en) 2016-02-09 2018-08-28 Ty-Das Building Products, Llc Starter strip
US10364568B2 (en) * 2015-01-23 2019-07-30 Richard Kramer Fabricated building
CN110670812A (en) * 2019-08-19 2020-01-10 安徽润安景汇建筑工程有限公司 Prevent weighing down formula building outer wall protector for eaves
US10947721B2 (en) * 2018-10-08 2021-03-16 Paul Schepens Cavity wall through-wall flashing support system and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH687033A5 (en) * 1993-07-07 1996-08-30 Werner Nill Edge profile for a roof edge of a building.
DE29600313U1 (en) * 1996-01-10 1996-03-07 Aral Ag Illuminated parapet

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1396732A (en) * 1920-07-23 1921-11-15 Louis W Cramer Flashing
CA481879A (en) * 1952-03-18 H. Cropp Elwin Metallic eave strip
US2984049A (en) * 1957-11-25 1961-05-16 Phillips Petroleum Co Snap in flashing
US3404495A (en) * 1966-07-08 1968-10-08 Reynolds Metals Co Combined flashing and fascia system and method of making same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA481879A (en) * 1952-03-18 H. Cropp Elwin Metallic eave strip
US1396732A (en) * 1920-07-23 1921-11-15 Louis W Cramer Flashing
US2984049A (en) * 1957-11-25 1961-05-16 Phillips Petroleum Co Snap in flashing
US3404495A (en) * 1966-07-08 1968-10-08 Reynolds Metals Co Combined flashing and fascia system and method of making same

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3735540A (en) * 1970-12-10 1973-05-29 K Thaler Building fascia
US3766694A (en) * 1971-02-17 1973-10-23 E Minialoff Fascia structure
US3817009A (en) * 1972-01-31 1974-06-18 Dynamit Nobel Ag Aero-dynamic roof
US4241549A (en) * 1978-09-07 1980-12-30 Mm Systems Corporation Conjoint facia, flashing and water dam
US4259817A (en) * 1979-02-05 1981-04-07 Elliott Frank S Insulative roof apparatus
JPS56119810U (en) * 1980-02-13 1981-09-12
JPS6318645Y2 (en) * 1980-02-13 1988-05-25
US4404777A (en) * 1981-07-31 1983-09-20 Mm Systems Corporation Conjoint facia, hood and water dam
US4483112A (en) * 1981-12-11 1984-11-20 Henry E. Millson, Jr. Roof edge system
US4439956A (en) * 1982-08-02 1984-04-03 Prawl Engineering Corporation Press lock fascia-cant system
US5189853A (en) * 1990-06-04 1993-03-02 W. P. Hickman Company Edge sealing devices for building structures
US5251411A (en) * 1992-04-15 1993-10-12 W. P. Hickman Company Roof edge anchoring devices for building structures
US5414965A (en) * 1992-04-15 1995-05-16 W. P. Hickman Company Roof edge anchoring devices for building structures
US5590498A (en) * 1995-04-05 1997-01-07 Mokres; James A. Roofing cant strip
US8413386B2 (en) 2003-11-18 2013-04-09 Daryl Fazekas Building protection structures and methods for making and using the protection structures
US20070261346A1 (en) * 2006-05-15 2007-11-15 Kelly Thomas L Wind and water resistant back wrap roof edge termination
US8407958B2 (en) * 2006-05-15 2013-04-02 Thomas L. Kelly Wind and water resistant back wrap roof edge termination
US8863475B2 (en) 2006-05-15 2014-10-21 Thomas L. Kelly Method for terminating an edge of a roof waterproofing membrane
US8522508B1 (en) 2010-03-04 2013-09-03 Pacc Systems I.P., Llc Flashing support cant for a wall assembly and associated method
US9303414B1 (en) * 2014-02-10 2016-04-05 Daryl B. Keiser Grain bin bolt cover
US10364568B2 (en) * 2015-01-23 2019-07-30 Richard Kramer Fabricated building
US10060126B2 (en) 2016-02-09 2018-08-28 Ty-Das Building Products, Llc Starter strip
US10947721B2 (en) * 2018-10-08 2021-03-16 Paul Schepens Cavity wall through-wall flashing support system and method
CN110670812A (en) * 2019-08-19 2020-01-10 安徽润安景汇建筑工程有限公司 Prevent weighing down formula building outer wall protector for eaves

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FR2031568A1 (en) 1970-11-20
GB1216025A (en) 1970-12-16
DE2007741A1 (en) 1970-09-03

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