US20080028708A1 - Slip-resistant roofing felt - Google Patents
Slip-resistant roofing felt Download PDFInfo
- Publication number
- US20080028708A1 US20080028708A1 US11/499,614 US49961406A US2008028708A1 US 20080028708 A1 US20080028708 A1 US 20080028708A1 US 49961406 A US49961406 A US 49961406A US 2008028708 A1 US2008028708 A1 US 2008028708A1
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- US
- United States
- Prior art keywords
- ridges
- felt
- sheet
- roofing underlayment
- ridge
- 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
- E04D12/00—Non-structural supports for roofing materials, e.g. battens, boards
- E04D12/002—Sheets of flexible material, e.g. roofing tile underlay
Definitions
- the present invention relates to a roofing felt, and, more particularly, to a roofing felt having a slip-resist surface.
- bituminous asphalt-based felt commonly referred to as saturated felt
- saturated felt has been used as an underlayment in the construction of a roof.
- the felt is typically applied to a completed roof deck and then covered by outer roofing materials, such as asphalt shingles, tiles and the like. Because the felt is usually made from stock paper saturated or impregnated with asphalt, it functions to provide an additional protective layer against wind, rain, etc.
- the present invention overcomes the disadvantages and shortcomings of the prior art discussed above by providing a new and improved roofing underlayment which is made from a flexible sheet of felt at least partially impregnated with a coating material.
- the sheet includes at least one ridge extending in a substantially longitudinal direction. The ridge projects upwardly from the sheet and is flexible such that the ridge is collapsible when a downward force is applied thereto.
- the ridge is also defined by a portion of the sheet.
- Another aspect of the present invention involves providing a method for forming a roofing underlayment. More particularly, the method includes the steps of providing a felt sheet and then deforming the sheet so as to form a plurality of upwardly projecting ridges thereon.
- FIG. 1 is a perspective view of a roof under construction with the use of a felt sheet made in accordance with the present invention
- FIG. 2 is an enlarged perspective view of a portion of the felt sheet shown in FIG. 1 ;
- FIGS. 3 and 4 are schematic, in-use views of the felt sheet shown in FIGS. 1 and 2 ;
- FIG. 5 is an enlarged view of a portion of the felt sheet illustrated in FIG. 4 ;
- FIG. 6 is a schematic view of rollers adapted for use in making the felt sheet shown in FIGS. 1 and 2 ;
- FIG. 7 is a modified version of the felt sheet shown in FIGS. 1 and 2 ;
- FIG. 8 is another modified version of the felt sheet shown in FIGS. 1 and 2 ;
- FIG. 9 is yet another modified version of the felt sheet shown in FIGS. 1 and 2 .
- FIG. 1 illustrates a roof 10 which is under construction with the use of a roof underlayment 12 constructed in accordance with the present invention.
- the roof underlayment 12 includes a flexible felt sheet 14 made in a conventional manner.
- the felt sheet 14 is made from organic and/or inorganic fibers (e.g., cellulose and/or glass fibers) saturated, impregnated, coated and/or otherwise provided with a suitable material, such as asphalt, tart, other bitumen materials and non-bitumen materials (“coating materials”).
- suitable material such as asphalt, tart, other bitumen materials and non-bitumen materials (“coating materials”).
- the felt sheet 14 is provided with a non-planar surface profile. More particularly, the felt sheet 14 is provided with a plurality of generally parallel ridges 16 extending in a substantially longitudinal direction along the entire length of the felt sheet 14 . Each of the ridges 16 is formed by a reliefed portion of the felt sheet 14 and is therefore made from the same material as the felt sheet 14 itself (e.g., organic and/or inorganic fibers saturated with a coating material). As illustrated in FIGS. 2 and 3 , the ridges 16 project upwardly from the felt sheet 14 , forming a complementary groove 18 beneath each of the ridges 16 . Because the felt sheet 14 is flexible, each of the ridges 16 is deformable such that it can collapse easily when compressed downwardly.
- FIG. 6 illustrates a pair of rollers 20 , 22 adapted for use in forming the ridges 16 in the felt sheet 14 .
- the roller 20 has a plurality of circular grooves 24
- the roller 22 has a plurality of circular projections 26 in registry with the grooves 24 .
- the rollers 20 , 22 are urged against one another such that each of the projections 26 mates with a corresponding one of the grooves 24 as the rollers 20 , 22 rotate in opposite arcuate directions.
- a roll of felt 28 made using a conventional process is rotatably mounted adjacent the rollers 20 , 22 such that the felt 28 can be fed into the nip formed by the rollers 20 , 22 .
- the felt 28 is fed from the roll and passes between the rollers 20 , 22 , the projections 26 and the grooves 24 of the rollers 20 , 22 , respectively, deform portions of the felt 28 , thereby forming the ridges 16 and grooves 18 therein.
- One or both of the rollers 20 , 22 can be heated so as to facilitate the formation of the ridges 16 and grooves 18 .
- After the felt 28 passes through the rollers 20 , 22 it can be rolled into a roll for transportation to a desired location.
- the felt sheet 14 Because of the ridges 16 , the felt sheet 14 exhibits a slip-resistant characteristic. With reference to FIGS. 3 and 4 , when the felt sheet 14 is installed on a pitched roof deck 30 and stepped on by a roofer, the ridges 16 collapse. As the ridges 16 collapse, they tend to fold upon themselves, thereby forming folds 32 (see FIG. 5 ). Once formed, the folds 32 define gripping surfaces which provide additional traction for the roofer.
- the ridges 16 can extend along the length of the felt sheet 14 in a non-linear manner.
- FIG. 7 illustrates the ridges 16 extending in a sinusoidal fashion.
- the ridges 16 can be provided with different shapes and/or sizes.
- the ridges 16 can be provided with a substantially triangular profile (see FIG. 8 ) or a substantially rectangular profile (see FIG. 9 ).
- the ridges 16 can be formed using any mechanism which is used for forming ridges in a flexible layer or substrate.
Abstract
Description
- The present invention relates to a roofing felt, and, more particularly, to a roofing felt having a slip-resist surface.
- In the past, bituminous asphalt-based felt, commonly referred to as saturated felt, has been used as an underlayment in the construction of a roof. The felt is typically applied to a completed roof deck and then covered by outer roofing materials, such as asphalt shingles, tiles and the like. Because the felt is usually made from stock paper saturated or impregnated with asphalt, it functions to provide an additional protective layer against wind, rain, etc.
- One problem associated with conventional saturated felt is that it is slippery, thereby creating a potential hazard to a roofer who must walk over the felt during a roofing operation. While various remedies have been proposed for this problem (see, e.g., U.S. Pat. Nos. 5,687,517 and 6,378,259), they are not particularly suitable for use with saturated felt and/or they may not be cost-effective. In such circumstances, there is a need for a cost-effective remedy for making saturated felt more slip-resistant.
- The present invention overcomes the disadvantages and shortcomings of the prior art discussed above by providing a new and improved roofing underlayment which is made from a flexible sheet of felt at least partially impregnated with a coating material. The sheet includes at least one ridge extending in a substantially longitudinal direction. The ridge projects upwardly from the sheet and is flexible such that the ridge is collapsible when a downward force is applied thereto. The ridge is also defined by a portion of the sheet.
- Another aspect of the present invention involves providing a method for forming a roofing underlayment. More particularly, the method includes the steps of providing a felt sheet and then deforming the sheet so as to form a plurality of upwardly projecting ridges thereon.
- For a more complete understanding of the present invention, reference is made to the following detailed description of an exemplary embodiment considered in conjunction with the accompanying drawings, in which:
-
FIG. 1 is a perspective view of a roof under construction with the use of a felt sheet made in accordance with the present invention; -
FIG. 2 is an enlarged perspective view of a portion of the felt sheet shown inFIG. 1 ; -
FIGS. 3 and 4 are schematic, in-use views of the felt sheet shown inFIGS. 1 and 2 ; -
FIG. 5 is an enlarged view of a portion of the felt sheet illustrated inFIG. 4 ; -
FIG. 6 is a schematic view of rollers adapted for use in making the felt sheet shown inFIGS. 1 and 2 ; -
FIG. 7 is a modified version of the felt sheet shown inFIGS. 1 and 2 ; -
FIG. 8 is another modified version of the felt sheet shown inFIGS. 1 and 2 ; and -
FIG. 9 is yet another modified version of the felt sheet shown inFIGS. 1 and 2 . -
FIG. 1 illustrates aroof 10 which is under construction with the use of aroof underlayment 12 constructed in accordance with the present invention. Theroof underlayment 12 includes aflexible felt sheet 14 made in a conventional manner. For instance, thefelt sheet 14 is made from organic and/or inorganic fibers (e.g., cellulose and/or glass fibers) saturated, impregnated, coated and/or otherwise provided with a suitable material, such as asphalt, tart, other bitumen materials and non-bitumen materials (“coating materials”). Some examples of conventional felt sheets are described in U.S. Pat. Nos. 4,513,045, 4,543,158, 5,717,012 and 5,776,841, the disclosures of which are incorporated herein by reference in their entireties. - Referring to
FIG. 1 , in general, and toFIGS. 2 and 3 in particular, once the feltsheet 14 is made using a conventional method, it is provided with a non-planar surface profile. More particularly, thefelt sheet 14 is provided with a plurality of generallyparallel ridges 16 extending in a substantially longitudinal direction along the entire length of thefelt sheet 14. Each of theridges 16 is formed by a reliefed portion of thefelt sheet 14 and is therefore made from the same material as thefelt sheet 14 itself (e.g., organic and/or inorganic fibers saturated with a coating material). As illustrated inFIGS. 2 and 3 , theridges 16 project upwardly from thefelt sheet 14, forming acomplementary groove 18 beneath each of theridges 16. Because thefelt sheet 14 is flexible, each of theridges 16 is deformable such that it can collapse easily when compressed downwardly. -
FIG. 6 illustrates a pair ofrollers ridges 16 in thefelt sheet 14. More particularly, theroller 20 has a plurality ofcircular grooves 24, while theroller 22 has a plurality ofcircular projections 26 in registry with thegrooves 24. In use, therollers projections 26 mates with a corresponding one of thegrooves 24 as therollers - Still referring to
FIG. 6 , a roll of felt 28 made using a conventional process (i.e., a substantially flat sheet felt without the ridges 16) is rotatably mounted adjacent therollers felt 28 can be fed into the nip formed by therollers felt 28 is fed from the roll and passes between therollers projections 26 and thegrooves 24 of therollers felt 28, thereby forming theridges 16 and grooves 18 therein. One or both of therollers ridges 16 andgrooves 18. After the felt 28 passes through therollers - Because of the
ridges 16, thefelt sheet 14 exhibits a slip-resistant characteristic. With reference toFIGS. 3 and 4 , when thefelt sheet 14 is installed on apitched roof deck 30 and stepped on by a roofer, theridges 16 collapse. As theridges 16 collapse, they tend to fold upon themselves, thereby forming folds 32 (seeFIG. 5 ). Once formed, thefolds 32 define gripping surfaces which provide additional traction for the roofer. - It should be noted that the present invention can have numerous modifications and variations. For instance, the
ridges 16 can extend along the length of thefelt sheet 14 in a non-linear manner.FIG. 7 illustrates theridges 16 extending in a sinusoidal fashion. Moreover, theridges 16 can be provided with different shapes and/or sizes. By way of example, instead of the substantially U-shaped profile illustrated inFIGS. 2 and 3 , theridges 16 can be provided with a substantially triangular profile (seeFIG. 8 ) or a substantially rectangular profile (seeFIG. 9 ). Further, theridges 16 can be formed using any mechanism which is used for forming ridges in a flexible layer or substrate. - It will be understood that the embodiments described herein are merely exemplary and that a person skilled in the art may make many variations and modifications without departing from the spirit and scope of the invention. All such variations and modifications are intended to be included within the scope of the invention as defined in the appended claims.
Claims (16)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/499,614 US20080028708A1 (en) | 2006-08-04 | 2006-08-04 | Slip-resistant roofing felt |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/499,614 US20080028708A1 (en) | 2006-08-04 | 2006-08-04 | Slip-resistant roofing felt |
Publications (1)
Publication Number | Publication Date |
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US20080028708A1 true US20080028708A1 (en) | 2008-02-07 |
Family
ID=39027772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/499,614 Abandoned US20080028708A1 (en) | 2006-08-04 | 2006-08-04 | Slip-resistant roofing felt |
Country Status (1)
Country | Link |
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US (1) | US20080028708A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080155923A1 (en) * | 2006-12-30 | 2008-07-03 | Teng Yihsien H | Pleated roofing membrane and roofing shingle system |
US9499987B2 (en) * | 2014-12-17 | 2016-11-22 | Southeastern Metals Manufacturing Company, Inc. | Roofing systems for low slope membrane and steep pitch metal roofing |
US20170328067A1 (en) * | 2016-05-13 | 2017-11-16 | Atlantic Coated Papers Ltd. / Papier Couches D'atlantic Ltee | Sheet material for roofing with water-based adhesive back coating |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4513045A (en) * | 1984-04-02 | 1985-04-23 | Gaf Corporation | Sheet type felt |
US4543158A (en) * | 1984-04-02 | 1985-09-24 | Gaf Corporation | Sheet type felt |
US5153964A (en) * | 1990-01-12 | 1992-10-13 | Norman J. Olson | Machine optics and paper path cleaner |
US5232763A (en) * | 1989-07-10 | 1993-08-03 | A/S Jens Villadsens Fabriker | Bituminous coating material and a process for producing a bituminous coating on a support |
US5401588A (en) * | 1992-12-23 | 1995-03-28 | Georgia-Pacific Resins Inc. | Gypsum microfiber sheet material |
US5687517A (en) * | 1995-09-21 | 1997-11-18 | W. R. Grace & Co.-Conn. | Skid-resistant roofing underlayment |
US5717012A (en) * | 1995-11-03 | 1998-02-10 | Building Materials Corporation Of America | Sheet felt |
US6127292A (en) * | 1999-01-14 | 2000-10-03 | W. P. Hickman Systems Inc. | Coal tar impregnated reinforcement sheets |
US6308482B1 (en) * | 1999-03-15 | 2001-10-30 | Mark C. Strait | Reinforced roof underlayment and method of making the same |
US6378259B1 (en) * | 1999-12-01 | 2002-04-30 | Douglas Carlson | Roofing felt with adhesive on front and rear faces |
US6703108B1 (en) * | 1995-06-29 | 2004-03-09 | 3M Innovative Properties Company | Wet retroreflective marking material |
US6925766B2 (en) * | 2003-02-05 | 2005-08-09 | Ibco Srl | Multilayer slip resistant sheet material |
US7303805B2 (en) * | 2003-12-22 | 2007-12-04 | 3M Innovative Properties Company | Loop fabric |
-
2006
- 2006-08-04 US US11/499,614 patent/US20080028708A1/en not_active Abandoned
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4543158A (en) * | 1984-04-02 | 1985-09-24 | Gaf Corporation | Sheet type felt |
US4513045A (en) * | 1984-04-02 | 1985-04-23 | Gaf Corporation | Sheet type felt |
US5232763A (en) * | 1989-07-10 | 1993-08-03 | A/S Jens Villadsens Fabriker | Bituminous coating material and a process for producing a bituminous coating on a support |
US5153964A (en) * | 1990-01-12 | 1992-10-13 | Norman J. Olson | Machine optics and paper path cleaner |
US5401588A (en) * | 1992-12-23 | 1995-03-28 | Georgia-Pacific Resins Inc. | Gypsum microfiber sheet material |
US6703108B1 (en) * | 1995-06-29 | 2004-03-09 | 3M Innovative Properties Company | Wet retroreflective marking material |
US5687517A (en) * | 1995-09-21 | 1997-11-18 | W. R. Grace & Co.-Conn. | Skid-resistant roofing underlayment |
US5717012A (en) * | 1995-11-03 | 1998-02-10 | Building Materials Corporation Of America | Sheet felt |
US5776841A (en) * | 1995-11-03 | 1998-07-07 | Building Materials Corporation Of America | Sheet felt |
US6127292A (en) * | 1999-01-14 | 2000-10-03 | W. P. Hickman Systems Inc. | Coal tar impregnated reinforcement sheets |
US6308482B1 (en) * | 1999-03-15 | 2001-10-30 | Mark C. Strait | Reinforced roof underlayment and method of making the same |
US6378259B1 (en) * | 1999-12-01 | 2002-04-30 | Douglas Carlson | Roofing felt with adhesive on front and rear faces |
US6925766B2 (en) * | 2003-02-05 | 2005-08-09 | Ibco Srl | Multilayer slip resistant sheet material |
US7303805B2 (en) * | 2003-12-22 | 2007-12-04 | 3M Innovative Properties Company | Loop fabric |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080155923A1 (en) * | 2006-12-30 | 2008-07-03 | Teng Yihsien H | Pleated roofing membrane and roofing shingle system |
US7765763B2 (en) * | 2006-12-30 | 2010-08-03 | Owens Corning Intellectual Capital, Llc | Pleated roofing membrane and roofing shingle system |
US9499987B2 (en) * | 2014-12-17 | 2016-11-22 | Southeastern Metals Manufacturing Company, Inc. | Roofing systems for low slope membrane and steep pitch metal roofing |
US9896846B2 (en) | 2014-12-17 | 2018-02-20 | Southeastern Metals Manufacturing Company, Inc. | Low slope roofing system |
US20170328067A1 (en) * | 2016-05-13 | 2017-11-16 | Atlantic Coated Papers Ltd. / Papier Couches D'atlantic Ltee | Sheet material for roofing with water-based adhesive back coating |
US10385572B2 (en) * | 2016-05-13 | 2019-08-20 | Atlantic Coated Papers Ltd. / Papier Couches D'atlantic Ltee | Sheet material for roofing with water-based adhesive back coating |
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AS | Assignment |
Owner name: BULDING MATERIALS INVESTMENTS CORPORATION, DELAWAR Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ALBORA, JOSEPH A.;REEL/FRAME:018166/0219 Effective date: 20060803 |
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AS | Assignment |
Owner name: DEUTSCHE BANK TRUST COMPANY AMERICAS, NEW YORK Free format text: SECURITY AGREEMENT;ASSIGNORS:BUILDING MATERIALS CORPORATION OF AMERICA;BMCA ACQUISITION INC.;BMCA ACQUISITION SUB INC.;AND OTHERS;REEL/FRAME:019028/0534 Effective date: 20070222 Owner name: DEUTSCHE BANK TRUST COMPANY AMERICAS,NEW YORK Free format text: SECURITY AGREEMENT;ASSIGNORS:BUILDING MATERIALS CORPORATION OF AMERICA;BMCA ACQUISITION INC.;BMCA ACQUISITION SUB INC.;AND OTHERS;REEL/FRAME:019028/0534 Effective date: 20070222 |
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Owner name: DEUTSCHE BANK AG NEW YORK BRANCH, NEW YORK Free format text: SECURITY AGREEMENT;ASSIGNORS:BUILDING MATERIALS CORPORATION OF AMERICA;BMCA ACQUISITION INC.;BMCA ACQUISITION SUB INC.;AND OTHERS;REEL/FRAME:019122/0197 Effective date: 20070315 Owner name: DEUTSCHE BANK AG NEW YORK BRANCH,NEW YORK Free format text: SECURITY AGREEMENT;ASSIGNORS:BUILDING MATERIALS CORPORATION OF AMERICA;BMCA ACQUISITION INC.;BMCA ACQUISITION SUB INC.;AND OTHERS;REEL/FRAME:019122/0197 Effective date: 20070315 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |