US20150093551A1 - Roofing underlayment with nail sealing system - Google Patents
Roofing underlayment with nail sealing system Download PDFInfo
- Publication number
- US20150093551A1 US20150093551A1 US14/398,656 US201314398656A US2015093551A1 US 20150093551 A1 US20150093551 A1 US 20150093551A1 US 201314398656 A US201314398656 A US 201314398656A US 2015093551 A1 US2015093551 A1 US 2015093551A1
- Authority
- US
- United States
- Prior art keywords
- sealant
- sheet according
- sheet
- base layer
- coating layer
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T428/2481—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including layer of mechanically interengaged strands, strand-portions or strand-like strips
Definitions
- the invention pertains to roofing underlayments, and in particular to a system for preventing water leakage around fasteners that are used to secure roofing underlayment to a roof deck.
- the basic structure of a typical roofing underlayment is a woven scrim layer (or a non-woven layer) with a waterproof coating on both sides.
- nails are driven through the roofing underlayment to attach it to a roof deck.
- This makes holes through the underlayment and there is a susceptibility to water leakage around the nails.
- It is known in the art to include in a multilayer roofing underlayment a layer that is adapted to seal around nails, e.g. Thai et al., US 2010/0178827; Binkley et al., US 2007/0077838; Zickell et al., US 2007/0071946; and Sandrasegaran et al., WO 2010/070466.
- these systems require use of a full layer of the sealant, including across areas of the sheet where nailing will not occur.
- the invention provides nailing sealant areas or strips inside the layers of a sheet of underlayment that provide a seal around the fasteners passing through the sheet.
- a sheet of roofing underlayment comprising a base layer, a water-impermeable coating layer laminated to a first side of the base layer, and a plurality of spaced-apart sealant areas between the coating layer and the base layer, comprising a sealant adapted to form a seal around a fastener penetrating the sheet.
- FIG. 1 is a cross-sectional view through one embodiment of the roofing underlayment.
- FIG. 2 is a cross-sectional view through the underlayment of FIG. 1 nailed to a roof deck.
- FIG. 3 is a cross-sectional view through a second embodiment of the underlayment.
- FIG. 4 is a cross-sectional view through a third embodiment of the underlayment.
- the roofing underlayment 10 comprises a base layer, namely a woven scrim layer 12 , laminated to a first coating layer 14 on one side and to a second coating layer 16 on the opposite side.
- the scrim comprises woven tapes which may be made of various resins, including polyolefins such as polyethylene and polypropylene, polyesters, polystyrene, nylon, and ethylene acrylic copolymers.
- the base layer may be a woven, non-woven or film layer.
- the coating layers are water impermeable and may comprise any of the same resins as the scrim.
- the scrim may have a weight of about 75 grams per square meter, alternatively a weight in the range of 25-150 gsm.
- the coatings may have a thickness of about 1.5 mil, alternatively a thickness in the range of 0.3-3.5 mil.
- the sealant areas 18 are spaced-apart strips positioned between the scrim 12 and the first coating layer 14 , which in use is the upper layer of the sheet. In the view of FIG. 1 , the strips 18 extend into the plane of the paper.
- the sealant material may be any of various seal-forming adhesives, including hot melt adhesive, silicone, glue, modified bitumen and rubberized asphalt.
- the sealant areas 18 may be black or dark-colored to be visible through the coating 14 .
- the strips of sealant are applied between the first coating layer 14 and the scrim layer 12 . They are placed in nailing areas such as along the longitudinal edges of the sheet, and, alternatively also across the middle of the sheet. For example, there may be three continuous parallel strips of sealant 18 across the sheet (at the middle and two longitudinal edges) of about 2 inches (5 cm) wide and about 5 mil thick.
- the strips may be intermittent rather than continuous, or a combination of continuous and intermittent.
- a sealant is employed that does not cure during the process of manufacturing the roofing underlayment. It remains liquid until a fastener, e.g. a nail, passes through the coating, exposing the sealant to air or humidity and causing the sealant to cure and form a rubbery gasket around the nail.
- the sealant cures during the process of manufacturing the roofing underlayment.
- the thickness of the top coating layer 14 or of the scrim layer 12 , or both, may be reduced in the area of the sealant strips 18 , as shown in FIG. 1 , so that the sheet 10 has a substantially uniform thickness. This facilitates winding up of the sheet evenly into a roll, avoiding build-up in the roll in the areas of the strips.
- roll buildup can be managed by making the strips intermittent, or having intermittent spots of sealant.
- roll buildup can be managed by osculation of the sealant strips.
- the osculation of the strips is done by means of the mechanism of delivering the stops being slightly moved left and right traversing across the web, preventing the sealant strips from stacking upon themselves layer after layer.
- the build-up is distributed over a space of approximately 8 inches (20 cm).
- FIG. 2 shows the sheet of roofing underlayment 10 laid in place on a roof deck 22 , with the second coating layer 16 being the bottom layer in direct contact with the deck, and the first coating layer 14 being the upper layer.
- Nails 20 are driven through the sheet along the strips 18 , forming holes 24 through the sheet.
- the sealant forms a seal around the nails, preventing water infiltration to the deck.
- staples or screws can be used in place of nails.
- a further embodiment of the roofing underlayment 30 has additional sealant areas.
- Sealant areas or strips 32 are provided on the underside of the sheet, laminated to the outside of the second coating layer 16 , aligned with the sealant areas 18 between the first coating layer 14 and the scrim layer 12 .
- Additional sealant areas or strips 34 are provided on the upper side of the sheet, laminated to the first coating layer 14 and aligned with the sealant areas 18 and 32 . This arrangement enhances the sealing around fasteners driven through the sealing areas 34 , 18 , 32 .
- the roofing underlayment 30 may have only the internal sealant areas 18 and the top sealant areas 34 , or only the internal sealant areas 18 and the bottom sealant areas 32 .
- FIG. 4 shows a further embodiment of the roofing underlayment 40 .
- the sealant area 18 is positioned between the scrim layer 12 and the second coating layer 16 (in use, the layer in contact with the roof deck), rather than between the scrim layer 12 and the first coating layer 14 (in use, the top layer).
- the roofing underlayment 40 is otherwise the same as the roofing underlayment 10 as described above.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
Description
- The invention pertains to roofing underlayments, and in particular to a system for preventing water leakage around fasteners that are used to secure roofing underlayment to a roof deck.
- The basic structure of a typical roofing underlayment is a woven scrim layer (or a non-woven layer) with a waterproof coating on both sides. In use, nails are driven through the roofing underlayment to attach it to a roof deck. This makes holes through the underlayment and there is a susceptibility to water leakage around the nails. It is known in the art to include in a multilayer roofing underlayment a layer that is adapted to seal around nails, e.g. Thai et al., US 2010/0178827; Binkley et al., US 2007/0077838; Zickell et al., US 2007/0071946; and Sandrasegaran et al., WO 2010/070466. However, these systems require use of a full layer of the sealant, including across areas of the sheet where nailing will not occur.
- The invention provides nailing sealant areas or strips inside the layers of a sheet of underlayment that provide a seal around the fasteners passing through the sheet.
- According to one aspect of the invention, there is provided a sheet of roofing underlayment, comprising a base layer, a water-impermeable coating layer laminated to a first side of the base layer, and a plurality of spaced-apart sealant areas between the coating layer and the base layer, comprising a sealant adapted to form a seal around a fastener penetrating the sheet.
- Further aspects of the invention and features of specific embodiments of the invention are described below.
-
FIG. 1 is a cross-sectional view through one embodiment of the roofing underlayment. -
FIG. 2 is a cross-sectional view through the underlayment ofFIG. 1 nailed to a roof deck. -
FIG. 3 is a cross-sectional view through a second embodiment of the underlayment. -
FIG. 4 is a cross-sectional view through a third embodiment of the underlayment. - Referring first to
FIGS. 1 and 2 , theroofing underlayment 10 comprises a base layer, namely awoven scrim layer 12, laminated to afirst coating layer 14 on one side and to asecond coating layer 16 on the opposite side. - The scrim comprises woven tapes which may be made of various resins, including polyolefins such as polyethylene and polypropylene, polyesters, polystyrene, nylon, and ethylene acrylic copolymers. The base layer may be a woven, non-woven or film layer. The coating layers are water impermeable and may comprise any of the same resins as the scrim. The scrim may have a weight of about 75 grams per square meter, alternatively a weight in the range of 25-150 gsm. The coatings may have a thickness of about 1.5 mil, alternatively a thickness in the range of 0.3-3.5 mil.
- The
sealant areas 18 are spaced-apart strips positioned between thescrim 12 and thefirst coating layer 14, which in use is the upper layer of the sheet. In the view ofFIG. 1 , thestrips 18 extend into the plane of the paper. The sealant material may be any of various seal-forming adhesives, including hot melt adhesive, silicone, glue, modified bitumen and rubberized asphalt. Thesealant areas 18 may be black or dark-colored to be visible through thecoating 14. During the manufacture of the underlayment, the strips of sealant are applied between thefirst coating layer 14 and thescrim layer 12. They are placed in nailing areas such as along the longitudinal edges of the sheet, and, alternatively also across the middle of the sheet. For example, there may be three continuous parallel strips ofsealant 18 across the sheet (at the middle and two longitudinal edges) of about 2 inches (5 cm) wide and about 5 mil thick. Alternatively, the strips may be intermittent rather than continuous, or a combination of continuous and intermittent. - In one embodiment, a sealant is employed that does not cure during the process of manufacturing the roofing underlayment. It remains liquid until a fastener, e.g. a nail, passes through the coating, exposing the sealant to air or humidity and causing the sealant to cure and form a rubbery gasket around the nail. In a second embodiment, the sealant cures during the process of manufacturing the roofing underlayment. The thickness of the
top coating layer 14 or of thescrim layer 12, or both, may be reduced in the area of thesealant strips 18, as shown inFIG. 1 , so that thesheet 10 has a substantially uniform thickness. This facilitates winding up of the sheet evenly into a roll, avoiding build-up in the roll in the areas of the strips. Alternatively, roll buildup can be managed by making the strips intermittent, or having intermittent spots of sealant. Alternatively, roll buildup can be managed by osculation of the sealant strips. In such embodiment, the osculation of the strips is done by means of the mechanism of delivering the stops being slightly moved left and right traversing across the web, preventing the sealant strips from stacking upon themselves layer after layer. Instead of the roll containing build-up in one spot the build-up is distributed over a space of approximately 8 inches (20 cm). -
FIG. 2 shows the sheet ofroofing underlayment 10 laid in place on aroof deck 22, with thesecond coating layer 16 being the bottom layer in direct contact with the deck, and thefirst coating layer 14 being the upper layer.Nails 20 are driven through the sheet along thestrips 18, formingholes 24 through the sheet. The sealant forms a seal around the nails, preventing water infiltration to the deck. Alternatively, staples or screws can be used in place of nails. - Referring next to
FIG. 3 , a further embodiment of theroofing underlayment 30 has additional sealant areas. Sealant areas orstrips 32 are provided on the underside of the sheet, laminated to the outside of thesecond coating layer 16, aligned with thesealant areas 18 between thefirst coating layer 14 and thescrim layer 12. Additional sealant areas orstrips 34 are provided on the upper side of the sheet, laminated to thefirst coating layer 14 and aligned with thesealant areas sealing areas roofing underlayment 30 may have only theinternal sealant areas 18 and thetop sealant areas 34, or only theinternal sealant areas 18 and thebottom sealant areas 32. -
FIG. 4 shows a further embodiment of theroofing underlayment 40. Thesealant area 18 is positioned between thescrim layer 12 and the second coating layer 16 (in use, the layer in contact with the roof deck), rather than between thescrim layer 12 and the first coating layer 14 (in use, the top layer). Theroofing underlayment 40 is otherwise the same as theroofing underlayment 10 as described above. - As will be apparent to those skilled in the art in the light of the foregoing disclosure, many alterations and modifications are possible in the practice of this invention without departing from the scope thereof. Accordingly, the scope of the invention is to be construed in accordance with the following claims.
Claims (21)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/398,656 US20150093551A1 (en) | 2012-05-03 | 2013-05-02 | Roofing underlayment with nail sealing system |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201261642300P | 2012-05-03 | 2012-05-03 | |
US14/398,656 US20150093551A1 (en) | 2012-05-03 | 2013-05-02 | Roofing underlayment with nail sealing system |
PCT/CA2013/050344 WO2013163764A1 (en) | 2012-05-03 | 2013-05-02 | Roofing underlayment with nail sealing system |
Publications (1)
Publication Number | Publication Date |
---|---|
US20150093551A1 true US20150093551A1 (en) | 2015-04-02 |
Family
ID=49514157
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/398,656 Abandoned US20150093551A1 (en) | 2012-05-03 | 2013-05-02 | Roofing underlayment with nail sealing system |
Country Status (3)
Country | Link |
---|---|
US (1) | US20150093551A1 (en) |
CA (1) | CA2872323A1 (en) |
WO (1) | WO2013163764A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021005388A1 (en) * | 2019-07-10 | 2021-01-14 | Tegola Canadese Spa | Bituminous tile with sealing engagement devices delimiting positioning areas of the anchoring nails |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5365709A (en) * | 1993-10-12 | 1994-11-22 | Lassiter Robert F | Roofing material with nail tabs |
EP0767284A1 (en) * | 1995-10-07 | 1997-04-09 | Paul Bauder GmbH & Co. | Vapor permeable substrate and underroof membrane |
US20040206035A1 (en) * | 2003-04-17 | 2004-10-21 | Emco Building Products Limited | Roofing shingle with headlap seal and improved coverage |
US20040237462A1 (en) * | 2003-05-29 | 2004-12-02 | Collins David Allan | Print methodology for applying polymer materials to roofing materials to form nail tabs or reinforcing strips |
US20070199276A1 (en) * | 2006-02-28 | 2007-08-30 | Building Materials Investment Corporation | Self-seal ring for roofing nail |
US20080026663A1 (en) * | 2006-07-19 | 2008-01-31 | Zhang Guorong | Roofing underlayment material and process for making the same |
US20100178827A1 (en) * | 2008-07-17 | 2010-07-15 | E.I.Du Pont De Nemours And Company | Roof underlayment |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070071946A1 (en) * | 2005-09-29 | 2007-03-29 | Northern Elastomeric, Inc. | Rubberized roof underlayment |
US20070077838A1 (en) * | 2005-09-30 | 2007-04-05 | Binkley Jesse A | Multiple layer roofing underlayment material |
WO2010070466A1 (en) * | 2008-12-15 | 2010-06-24 | Advanced Technical Laminates Manufacturing Sdn Bhd | Waterproof lamination roof underlay with nail-hole sealing property |
CA2734927A1 (en) * | 2010-03-25 | 2011-09-25 | Northern Elastomeric, Inc. | Weatherproof underlayment with high filler content polymer asphalt layer |
-
2013
- 2013-05-02 WO PCT/CA2013/050344 patent/WO2013163764A1/en active Application Filing
- 2013-05-02 CA CA2872323A patent/CA2872323A1/en not_active Abandoned
- 2013-05-02 US US14/398,656 patent/US20150093551A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5365709A (en) * | 1993-10-12 | 1994-11-22 | Lassiter Robert F | Roofing material with nail tabs |
EP0767284A1 (en) * | 1995-10-07 | 1997-04-09 | Paul Bauder GmbH & Co. | Vapor permeable substrate and underroof membrane |
US20040206035A1 (en) * | 2003-04-17 | 2004-10-21 | Emco Building Products Limited | Roofing shingle with headlap seal and improved coverage |
US20040237462A1 (en) * | 2003-05-29 | 2004-12-02 | Collins David Allan | Print methodology for applying polymer materials to roofing materials to form nail tabs or reinforcing strips |
US7201946B2 (en) * | 2003-05-29 | 2007-04-10 | David Allan Collins | Print methodology for applying polymer materials to roofing materials to form nail tabs or reinforcing strips |
US20070199276A1 (en) * | 2006-02-28 | 2007-08-30 | Building Materials Investment Corporation | Self-seal ring for roofing nail |
US20080026663A1 (en) * | 2006-07-19 | 2008-01-31 | Zhang Guorong | Roofing underlayment material and process for making the same |
US20100178827A1 (en) * | 2008-07-17 | 2010-07-15 | E.I.Du Pont De Nemours And Company | Roof underlayment |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021005388A1 (en) * | 2019-07-10 | 2021-01-14 | Tegola Canadese Spa | Bituminous tile with sealing engagement devices delimiting positioning areas of the anchoring nails |
US11927014B2 (en) | 2019-07-10 | 2024-03-12 | Tegola Canadese Srl | Bituminous tile with sealing engagement devices delimiting positioning areas of the anchoring nails |
Also Published As
Publication number | Publication date |
---|---|
WO2013163764A1 (en) | 2013-11-07 |
CA2872323A1 (en) | 2013-11-07 |
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AS | Assignment |
Owner name: IBCO SRL, BARBADOS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:VIDO, MARTIN;REEL/FRAME:034950/0680 Effective date: 20130501 |
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Owner name: IBCO SRL, BARBADOS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHEEMA, HARJINDER S.;REEL/FRAME:037812/0800 Effective date: 20130501 |
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Owner name: OWENS CORNING INTELLECTUAL CAPITAL, LLC, OHIO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:IBCO SRL;REEL/FRAME:039333/0867 Effective date: 20160725 |
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Free format text: NON FINAL ACTION MAILED |
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Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |