US20110104461A1 - Underlayment with slip-resistant surface - Google Patents
Underlayment with slip-resistant surface Download PDFInfo
- Publication number
- US20110104461A1 US20110104461A1 US12/892,629 US89262910A US2011104461A1 US 20110104461 A1 US20110104461 A1 US 20110104461A1 US 89262910 A US89262910 A US 89262910A US 2011104461 A1 US2011104461 A1 US 2011104461A1
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- US
- United States
- Prior art keywords
- slip
- asphalt
- underlayment
- resistant member
- resistant
- 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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D7/00—Roof covering exclusively consisting of sealing masses applied in situ; Gravelling of flat roofs
- E04D7/005—Roof covering exclusively consisting of sealing masses applied in situ; Gravelling of flat roofs characterised by loose or embedded gravel or granules as an outer protection of the roof covering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/16—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer formed of particles, e.g. chips, powder or granules
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B11/00—Layered products comprising a layer of bituminous or tarry substances
- B32B11/10—Layered products comprising a layer of bituminous or tarry substances next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B11/00—Layered products comprising a layer of bituminous or tarry substances
- B32B11/12—Layered products comprising a layer of bituminous or tarry substances next to a particulate layer
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- 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
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- 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
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1089—Methods of surface bonding and/or assembly therefor of discrete laminae to single face of additional lamina
- Y10T156/1092—All laminae planar and face to face
-
- 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.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
- Y10T428/24372—Particulate matter
-
- 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.]
- Y10T428/24893—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material
Definitions
- an underlayer or underlayment is first applied to the plywood deck of the roof.
- the underlayment may take the form of an asphalt saturated paper which is useful as a waterproofing member.
- roofing shingles are applied on top of the underlayment with the seams of adjacent rows positioned in an offset relationship.
- a starter row or strip is begun at the roof eaves using self-sealing shingles.
- the end of the first shingle in the strip is trimmed such that, when it is placed on the deck, the cutouts of the first course of shingles will not be placed over the starter strip joints.
- the starter strip and the shingles are nailed to the roof. Successive rows of shingles are then secured to the deck or roof using nails.
- An underlayment may have granules embedded in an asphaltic composition. When positioned on an upper surface of the paper or membrane, the granules provide a high-traction surface upon which a roofing installer can walk. Such membranes also offer reinforcement and/or structural integrity, and allow lap sealing. Some of the granules however, may not become embedded into the asphalt material, thereby providing some amount of undesirable loose granules. Further, some embedded granules may become loose by the foot traffic of the roof installer.
- a roofing underlayment comprising an asphalt-coated fibrous sheet having an upper surface and a lower surface. A first portion of the upper surface has granules adhered thereto. A slip-resistant member is bonded to a second portion of the upper surface, an upper surface of the slip-resistant member having substantially no granules adhered thereto.
- a roofing underlayment comprising an asphalt-coated fibrous sheet having an upper surface and a lower surface. A first portion of the upper surface has granules adhered thereto. A slip-resistant member is bonded to a second portion of the upper surface, an upper surface of the slip-resistant member having fine abrasive particles adhered thereto.
- a roofing underlayment comprising an asphalt-coated fibrous sheet having an upper surface and a lower surface. A first portion of the upper surface has granules adhered thereto. A second portion of the upper surface includes a plurality of fine abrasive particles embedded in the asphalt-coated surface thereof.
- a method of making a roofing underlayment includes the steps of coating a fibrous sheet with asphalt to define an asphalt-coated fibrous sheet having an upper surface and a lower surface, adhering a slip-resistant member to a portion of the upper surface of the asphalt-coated fibrous sheet, covering the asphalt-coated fibrous sheet and optionally covering the slip-resistant member, with granules to define a granule coated underlayment.
- FIG. 1 is a schematic elevational view of an apparatus for making shingles according to the invention.
- FIG. 2 is a plan view of an underlayment having slip-resistant members in accordance with this invention.
- FIG. 3 is a schematic elevational view of a portion of an alternate embodiment of the apparatus illustrated in FIG. 1 .
- axially oriented is defined as running longitudinally in the machine direction, as indicated by the arrows 34 .
- FIG. 1 there is shown schematically in FIG. 1 an apparatus 10 for manufacturing an asphalt-based roofing material or underlayment 30 according to the invention.
- the manufacturing process involves passing a continuous sheet 12 in a machine direction (indicated by the arrows 34 ) through a series of manufacturing operations.
- the sheet may move at any desired speed.
- a continuous sheet of substrate or underlayment mat 12 is payed out from a roll 14 .
- the substrate can be any type suitable for use in reinforcing asphalt-based roofing materials, such as a non-woven web of glass or polymer fibers.
- the illustrated underlayment mat 12 is about 36 inches wide. Alternatively, the underlayment mat 12 may have any other desired width.
- the underlayment mat 12 may be fed through a coater 16 where an asphalt coating is applied to the mat 12 .
- the asphalt coating can be applied in any suitable manner.
- the mat 12 contacts a roller 17 , which is in contact with a supply of hot, melted asphalt.
- the roller 17 completely covers the mat 12 with a tacky coating of hot, melted asphalt to define a first asphalt coated sheet 18 .
- the asphalt coating could be sprayed on, rolled on, or applied to the sheet by other means.
- the material of the asphalt coating may comprise a mixture of asphalt and other desired materials, such as a mixture of styrene-butadiene-styrene (SBS) and asphalt.
- SBS styrene-butadiene-styrene
- the asphalt material may be filled with a material such as crushed dolomite, calcite limestone, and the like, amounting to at least about 50 percent by weight of the asphalt/filler combination.
- the manufacturing process may require that the underlayment mat 12 be fed through more than one coater, such as the coaters 16 and 16 ′ shown in FIG. 3 .
- a slip-resistant material such as film or slip-resistant tape 19 , as will be described in detail herein, may then be payed out from a roll 20 .
- the tape 19 is provided from a continuous roll.
- the tape 19 by be provided in discontinuous portions, and applied to the first asphalt coated sheet 18 .
- the slip-resistant tape 19 adheres to the first asphalt coated sheet 18 to define a second asphalt coated sheet 22 .
- the slip-resistant tape 19 is attached to the sheet 18 by the adhesive properties of the asphalt in the first asphalt coated sheet 18 .
- the slip-resistant tape 19 may be attached to the sheet 18 by any suitable means, such as other adhesives.
- the slip-resistant tape 19 is formed from polyester.
- the slip-resistant tape 19 is formed from polyolefin, such as polypropylene or polyethylene.
- the slip-resistant tape 19 can be formed from any material suitable for defining a slip-resistant surface on an underlayment, such as, for example, paper, film, scrim material, and woven or non-woven glass or polymer fibers, or a blend of the foregoing.
- the slip-resistant tape 19 includes an upper surface to which granules substantially will not adhere.
- a tape that provides improved traction may be provided in lieu of the slip-resistant tape 19 .
- a tape that consists of fine abrasive particles bonded by a tough, durable polymer to a dimensionally stable plastic film may be used.
- SAFETY-WALKTM tape manufactured by the 3MTM Corporation.
- the resulting second asphalt-coated fibrous sheet or second asphalt coated sheet 22 may then be passed beneath one or more granule dispensers 24 for the application of granules 25 to the portion of the upper surface of the second asphalt coated sheet 22 not covered by the slip-resistant tape 19 .
- the granules 25 will not adhere to the slip-resistant tape 19 , but will adhere to the exposed portion of the asphalt coated sheet 22 .
- the portion of the asphalt coated sheet 22 to which granules 25 are adhered defines a first portion 38 of the upper surface of the second asphalt coated sheet 22 .
- the portion of the asphalt coated sheet 22 to which the slip-resistant tape 19 is adhered defines a second portion 40 of the upper surface of the second asphalt coated sheet 22 .
- the axially oriented second portions 40 of the asphalt coated sheet 22 may be provided with fine abrasive particles or sand 25 ′ in lieu of the slip-resistant tape 19 .
- fine abrasive particles 25 ′ having a grit size within the range of from about 36 to about 54, may be used.
- the particles 25 ′ may be applied by one or more granule or particle dispensers 24 ′ to the second portions 40 of the upper surface of the second asphalt coated sheet 22 .
- the fine abrasive particles 25 ′ in the second portions 40 provide a greater slip-resistance relative to the first portion 38 of the upper surface of the second asphalt coated sheet 22 .
- the slip-resistant tape 19 is about 1.25 inches wide. Alternatively, the slip-resistant tape 19 may have a width within the range of from about 1 ⁇ 2 inches to about 4 inches. In the one embodiment, the slip-resistant tape 19 is formed from 148 gage polyester.
- a continuous release sheet 26 may be then be payed out from a roll 28 , and applied to a lower surface of the second asphalt coated sheet 22 .
- the release sheet 26 may be any desired release sheet, such as a paper or plastic film having a siliconized surface.
- the release sheet 26 prevents the underlayment 30 from adhering to itself when arranged in the roll 32 .
- the release sheet may be removed by a roof installer so that the bottom surface, or surface opposite the granule coated surface of the underlayment 30 , will adhere to a roof deck, a portion of which is illustrated at 42 in FIG. 2 , during installation of the underlayment on a roof.
- the sheet 22 becomes an underlayment 30 .
- the underlayment 30 is then collected on a drum or roll 32 for shipment.
- the underlayment 30 includes a plurality of longitudinally arranged slip-resistant tapes 19 adhered to the upper surface of the underlayment 30 .
- any other number of tapes 19 may be applied to the upper surface of the underlayment 30 , such as one tape 19 , two tapes 19 , or between three and eight tapes 19 .
- Each tape 19 defines a region that is free of granules 25 .
- the granule free regions of the underlayment 30 defined by the slip-resistant tapes 19 provide the roofing installer with a roofing underlayment 30 having relatively greater slip resistance than the portions of the underlayment 30 with granules 25 , but without the slip-resistant tape 19 .
- the underlayment 30 helps to lock out damage from wind-driven rain and ice damming.
- slip-resistant tapes 19 described above may be applied to any underlayment material which includes granules embedded in its upwardly facing surface, such as WEATHERLOCK® G underlayment material, sold by Owens Corning, Toledo, Ohio.
- the slip-resistant tapes 19 provide granule-free portions upon which the roofing installers may have improved slip resistance.
- ridges of asphalt coating may be formed along the edges of the slip-resistant tapes 19 .
- the ridges extend outwardly of the surface of the mat 12 and may provide a roughness on the surface of the mat 12 that further improves slip resistance for the roofing installers.
- roofing underlayment The principle and mode of operation of the roofing underlayment have been described in its preferred embodiment. However, it should be noted that the roofing underlayment described herein may be practiced otherwise than as specifically illustrated and described without departing from its scope.
Abstract
A roofing underlayment comprising an asphalt-coated fibrous sheet having an upper surface and a lower surface is provided. A first portion of the upper surface has granules adhered thereto. A slip-resistant member is bonded to a second portion of the upper surface, an upper surface of the slip-resistant member having substantially no granules adhered thereto.
Description
- This application claims the benefit of U.S. Provisional Application No. 61/246,203, filed Sep. 28, 2009, the disclosure of which is incorporated herein by reference.
- Various embodiments of an underlayment for use on a roof are described herein. In particular, the embodiments described herein relate to an improved underlayment
- In a typical roofing installation using asphalt shingles, an underlayer or underlayment is first applied to the plywood deck of the roof. The underlayment may take the form of an asphalt saturated paper which is useful as a waterproofing member. Roofing shingles are applied on top of the underlayment with the seams of adjacent rows positioned in an offset relationship. In practice, a starter row or strip is begun at the roof eaves using self-sealing shingles. The end of the first shingle in the strip is trimmed such that, when it is placed on the deck, the cutouts of the first course of shingles will not be placed over the starter strip joints. The starter strip and the shingles are nailed to the roof. Successive rows of shingles are then secured to the deck or roof using nails.
- An underlayment may have granules embedded in an asphaltic composition. When positioned on an upper surface of the paper or membrane, the granules provide a high-traction surface upon which a roofing installer can walk. Such membranes also offer reinforcement and/or structural integrity, and allow lap sealing. Some of the granules however, may not become embedded into the asphalt material, thereby providing some amount of undesirable loose granules. Further, some embedded granules may become loose by the foot traffic of the roof installer.
- The above objects as well as other objects not specifically enumerated are achieved by a roofing underlayment comprising an asphalt-coated fibrous sheet having an upper surface and a lower surface. A first portion of the upper surface has granules adhered thereto. A slip-resistant member is bonded to a second portion of the upper surface, an upper surface of the slip-resistant member having substantially no granules adhered thereto.
- According to this invention there is also provided a roofing underlayment comprising an asphalt-coated fibrous sheet having an upper surface and a lower surface. A first portion of the upper surface has granules adhered thereto. A slip-resistant member is bonded to a second portion of the upper surface, an upper surface of the slip-resistant member having fine abrasive particles adhered thereto.
- According to this invention there is also provided a roofing underlayment comprising an asphalt-coated fibrous sheet having an upper surface and a lower surface. A first portion of the upper surface has granules adhered thereto. A second portion of the upper surface includes a plurality of fine abrasive particles embedded in the asphalt-coated surface thereof.
- According to this invention there is also provided a method of making a roofing underlayment. The method includes the steps of coating a fibrous sheet with asphalt to define an asphalt-coated fibrous sheet having an upper surface and a lower surface, adhering a slip-resistant member to a portion of the upper surface of the asphalt-coated fibrous sheet, covering the asphalt-coated fibrous sheet and optionally covering the slip-resistant member, with granules to define a granule coated underlayment.
- Other advantages of the roofing underlayment will become apparent to those skilled in the art from the following detailed description, when read in light of the accompanying drawings.
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FIG. 1 is a schematic elevational view of an apparatus for making shingles according to the invention. -
FIG. 2 is a plan view of an underlayment having slip-resistant members in accordance with this invention. -
FIG. 3 is a schematic elevational view of a portion of an alternate embodiment of the apparatus illustrated inFIG. 1 . - The present invention will now be described with occasional reference to the specific embodiments of the invention. This invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
- Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for describing particular embodiments only and is not intended to be limiting of the invention. As used in the description of the invention and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise.
- Unless otherwise indicated, all numbers expressing quantities of ingredients, properties such as molecular weight, reaction conditions, and so forth as used in the specification and claims are to be understood as being modified in all instances by the term “about.” Accordingly, unless otherwise indicated, the numerical properties set forth in the specification and claims are approximations that may vary depending on the desired properties sought to be obtained in embodiments of the present invention. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as possible. Any numerical values, however, inherently contain certain errors necessarily resulting from error found in their respective measurements.
- As used in the description of the invention and the appended claims, the word/phrase “axially oriented” is defined as running longitudinally in the machine direction, as indicated by the
arrows 34. - Referring now to the drawings, there is shown schematically in
FIG. 1 anapparatus 10 for manufacturing an asphalt-based roofing material orunderlayment 30 according to the invention. In the illustrated embodiment, the manufacturing process involves passing acontinuous sheet 12 in a machine direction (indicated by the arrows 34) through a series of manufacturing operations. The sheet may move at any desired speed. - In a first step of the illustrated manufacturing process, a continuous sheet of substrate or
underlayment mat 12 is payed out from aroll 14. The substrate can be any type suitable for use in reinforcing asphalt-based roofing materials, such as a non-woven web of glass or polymer fibers. The illustratedunderlayment mat 12 is about 36 inches wide. Alternatively, theunderlayment mat 12 may have any other desired width. - The
underlayment mat 12 may be fed through acoater 16 where an asphalt coating is applied to themat 12. The asphalt coating can be applied in any suitable manner. In the illustrated embodiment, themat 12 contacts aroller 17, which is in contact with a supply of hot, melted asphalt. Theroller 17 completely covers themat 12 with a tacky coating of hot, melted asphalt to define a first asphalt coatedsheet 18. In other embodiments, however, the asphalt coating could be sprayed on, rolled on, or applied to the sheet by other means. The material of the asphalt coating may comprise a mixture of asphalt and other desired materials, such as a mixture of styrene-butadiene-styrene (SBS) and asphalt. The asphalt material may be filled with a material such as crushed dolomite, calcite limestone, and the like, amounting to at least about 50 percent by weight of the asphalt/filler combination. - It will be understood that more than one layer of asphalt coating may be applied to the
underlayment mat 12. Accordingly, the manufacturing process may require that theunderlayment mat 12 be fed through more than one coater, such as thecoaters FIG. 3 . - One or more strips of a slip-resistant material, such as film or slip-
resistant tape 19, as will be described in detail herein, may then be payed out from aroll 20. In the embodiment illustrated inFIG. 1 , thetape 19 is provided from a continuous roll. Alternatively, thetape 19 by be provided in discontinuous portions, and applied to the first asphalt coatedsheet 18. - The slip-
resistant tape 19 adheres to the first asphalt coatedsheet 18 to define a second asphalt coatedsheet 22. In one embodiment, the slip-resistant tape 19 is attached to thesheet 18 by the adhesive properties of the asphalt in the first asphalt coatedsheet 18. The slip-resistant tape 19, however, may be attached to thesheet 18 by any suitable means, such as other adhesives. In one embodiment, the slip-resistant tape 19 is formed from polyester. In another embodiment, the slip-resistant tape 19 is formed from polyolefin, such as polypropylene or polyethylene. The slip-resistant tape 19, however, can be formed from any material suitable for defining a slip-resistant surface on an underlayment, such as, for example, paper, film, scrim material, and woven or non-woven glass or polymer fibers, or a blend of the foregoing. - The slip-
resistant tape 19 includes an upper surface to which granules substantially will not adhere. Alternatively, a tape that provides improved traction may be provided in lieu of the slip-resistant tape 19. For example, a tape that consists of fine abrasive particles bonded by a tough, durable polymer to a dimensionally stable plastic film may be used. One example of such a tape is SAFETY-WALK™ tape manufactured by the 3M™ Corporation. - The resulting second asphalt-coated fibrous sheet or second asphalt coated
sheet 22 may then be passed beneath one ormore granule dispensers 24 for the application ofgranules 25 to the portion of the upper surface of the second asphalt coatedsheet 22 not covered by the slip-resistant tape 19. Thegranules 25 will not adhere to the slip-resistant tape 19, but will adhere to the exposed portion of the asphalt coatedsheet 22. In the illustrated embodiment, the portion of the asphalt coatedsheet 22 to whichgranules 25 are adhered defines afirst portion 38 of the upper surface of the second asphalt coatedsheet 22. Similarly, the portion of the asphalt coatedsheet 22 to which the slip-resistant tape 19 is adhered defines asecond portion 40 of the upper surface of the second asphalt coatedsheet 22. - In yet another embodiment, the axially oriented
second portions 40 of the asphalt coatedsheet 22 may be provided with fine abrasive particles orsand 25′ in lieu of the slip-resistant tape 19. For example, fineabrasive particles 25′ having a grit size within the range of from about 36 to about 54, may be used. Theparticles 25′ may be applied by one or more granule orparticle dispensers 24′ to thesecond portions 40 of the upper surface of the second asphalt coatedsheet 22. In such an embodiment, the fineabrasive particles 25′ in thesecond portions 40 provide a greater slip-resistance relative to thefirst portion 38 of the upper surface of the second asphalt coatedsheet 22. - In one embodiment, the slip-
resistant tape 19 is about 1.25 inches wide. Alternatively, the slip-resistant tape 19 may have a width within the range of from about ½ inches to about 4 inches. In the one embodiment, the slip-resistant tape 19 is formed from 148 gage polyester. - As shown in
FIG. 1 , acontinuous release sheet 26 may be then be payed out from aroll 28, and applied to a lower surface of the second asphalt coatedsheet 22. Therelease sheet 26 may be any desired release sheet, such as a paper or plastic film having a siliconized surface. Therelease sheet 26 prevents the underlayment 30 from adhering to itself when arranged in theroll 32. The release sheet may be removed by a roof installer so that the bottom surface, or surface opposite the granule coated surface of theunderlayment 30, will adhere to a roof deck, a portion of which is illustrated at 42 inFIG. 2 , during installation of the underlayment on a roof. - After all the
granules 25 are deposited on the second asphalt coatedsheet 22 by one ormore dispensers 24, and after therelease sheet 26 is applied, thesheet 22 becomes anunderlayment 30. Theunderlayment 30 is then collected on a drum or roll 32 for shipment. - As best shown in
FIG. 2 , theunderlayment 30 includes a plurality of longitudinally arranged slip-resistant tapes 19 adhered to the upper surface of theunderlayment 30. In the illustrated embodiment, there are fourtapes 19 applied to the upper surface of theunderlayment 30. Alternatively, any other number oftapes 19 may be applied to the upper surface of theunderlayment 30, such as onetape 19, twotapes 19, or between three and eighttapes 19. - Each
tape 19 defines a region that is free ofgranules 25. Advantageously, the granule free regions of theunderlayment 30 defined by the slip-resistant tapes 19 provide the roofing installer with aroofing underlayment 30 having relatively greater slip resistance than the portions of theunderlayment 30 withgranules 25, but without the slip-resistant tape 19. - When installed between a
roof deck 42 and any of asphalt shingles, cedar shakes, concrete tile, slate roofing, and other roofing material, theunderlayment 30 helps to lock out damage from wind-driven rain and ice damming. - The slip-
resistant tapes 19 described above may be applied to any underlayment material which includes granules embedded in its upwardly facing surface, such as WEATHERLOCK® G underlayment material, sold by Owens Corning, Toledo, Ohio. - Advantageously, as roofing installers walk across the granule coated surface of the
underlayment 30 described above, the slip-resistant tapes 19 provide granule-free portions upon which the roofing installers may have improved slip resistance. - In one embodiment, when the slip-
resistant tapes 19 adhere to the asphalt coating on themat 12, ridges of asphalt coating may be formed along the edges of the slip-resistant tapes 19. The ridges extend outwardly of the surface of themat 12 and may provide a roughness on the surface of themat 12 that further improves slip resistance for the roofing installers. - The principle and mode of operation of the roofing underlayment have been described in its preferred embodiment. However, it should be noted that the roofing underlayment described herein may be practiced otherwise than as specifically illustrated and described without departing from its scope.
Claims (11)
1. A roofing underlayment comprising an asphalt-coated fibrous sheet having an upper surface and a lower surface;
wherein a first portion of the upper surface has granules adhered thereto; and
wherein a slip-resistant member is bonded to a second portion of the upper surface, an upper surface of the slip-resistant member having substantially no granules adhered thereto.
2. The roofing underlayment according to claim 1 , wherein the slip-resistant member comprises film having a width within the range of from about ½ inch to about 4 inches wide.
3. The roofing underlayment according to claim 1 , wherein the slip-resistant member is arranged longitudinally and substantially parallel with an axis of the underlayment.
4. The roofing underlayment according to claim 1 , wherein the slip-resistant member is one of a plurality of slip-resistant members.
5. The roofing underlayment according to claim 4 , wherein the plurality of slip-resistant members are arranged longitudinally and substantially parallel with an axis of the underlayment and spaced apart from one another.
6. The roofing underlayment according to claim 1 , wherein the slip-resistant member includes an upper surface having fine abrasive particles adhered thereto.
7. The roofing underlayment according to claim 1 , wherein the slip-resistant member is formed from a material selected from the group consisting of a polyester film, a polyolefin film, a paper strip, a scrim material, a woven glass, a non-woven glass, a woven polymer and a nonwoven polymer material.
8. A roofing underlayment comprising an asphalt-coated fibrous sheet having an upper surface and a lower surface;
wherein a first portion of the upper surface has granules adhered thereto; and
wherein a slip-resistant member is bonded to a second portion of the upper surface, an upper surface of the slip-resistant member having fine abrasive particles adhered thereto.
9. A roofing underlayment comprising an asphalt-coated fibrous sheet having an upper surface and a lower surface;
wherein a first portion of the upper surface has granules adhered thereto; and
wherein a second portion of the upper surface includes a plurality of fine abrasive particles embedded in the asphalt-coated surface thereof.
10. A method of making a roofing underlayment comprising:
coating a fibrous sheet with asphalt to define an asphalt-coated fibrous sheet having an upper surface and a lower surface;
adhering a slip-resistant member to a portion of the upper surface of the asphalt-coated fibrous sheet;
covering the asphalt-coated fibrous sheet, and optionally covering the slip-resistant member, with granules to define a granule coated underlayment.
11. The method according to claim 10 , wherein the slip-resistant member has substantially no granules adhered thereto.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/892,629 US20110104461A1 (en) | 2009-09-28 | 2010-09-28 | Underlayment with slip-resistant surface |
US14/265,419 US9493954B2 (en) | 2009-09-28 | 2014-04-30 | Underlayment with slip-resistant surface |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US24620309P | 2009-09-28 | 2009-09-28 | |
US12/892,629 US20110104461A1 (en) | 2009-09-28 | 2010-09-28 | Underlayment with slip-resistant surface |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US14/265,419 Expired - Fee Related US9493954B2 (en) | 2009-09-28 | 2014-04-30 | Underlayment with slip-resistant surface |
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US9493954B2 (en) | 2009-09-28 | 2016-11-15 | Owens Corning Intellectual Capital, Llc | Underlayment with slip-resistant surface |
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US9827696B2 (en) | 2011-06-17 | 2017-11-28 | Fiberweb, Llc | Vapor-permeable, substantially water-impermeable multilayer article |
US9827755B2 (en) | 2011-06-23 | 2017-11-28 | Fiberweb, Llc | Vapor-permeable, substantially water-impermeable multilayer article |
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US10195640B2 (en) | 2015-06-29 | 2019-02-05 | Building Materials Investment Corporation | Method and apparatus for coating a moving substrate |
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