US20100031595A1 - Roofing plate, installation and method therefor - Google Patents

Roofing plate, installation and method therefor Download PDF

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Publication number
US20100031595A1
US20100031595A1 US12221957 US22195708A US2010031595A1 US 20100031595 A1 US20100031595 A1 US 20100031595A1 US 12221957 US12221957 US 12221957 US 22195708 A US22195708 A US 22195708A US 2010031595 A1 US2010031595 A1 US 2010031595A1
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Patent type
Prior art keywords
plate
roofing
substrate
membrane
cavity
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
Application number
US12221957
Inventor
Joshua S. Kelly
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Handy and Harman
OMG Inc
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Handy and Harman
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/14Fastening means therefor
    • E04D5/144Mechanical fastening means
    • E04D5/147Mechanical fastening means not perforating the flexible material
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/14Fastening means therefor
    • E04D5/141Fastening means therefor characterised by the location of the fastening means
    • E04D5/143Fastening means therefor characterised by the location of the fastening means in the field of the flexible material
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/14Fastening means therefor
    • E04D5/144Mechanical fastening means
    • E04D5/145Discrete fastening means, e.g. discs or clips
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/14Fastening means therefor
    • E04D5/148Fastening means therefor fastening by gluing

Abstract

A plate employed for securing substrate to a roofing structure employs a recessed central hub through which a fastener is driven. A barrier membrane covers the plate and is bonded in position to the plate. A sidewall of the recessed hub includes at least one vent opening to equalize pressure within the recessed hub during installation and post-installation.

Description

    BACKGROUND
  • This application relates generally to roofing plates which secure a substrate to a decking structure by means of a fastener. More particularly, this application relates to roofing plates which bond by means of an adhesive to an overlying barrier membrane.
  • In roofing installations to which the present application relates a substrate is secured by a multiplicity of disc-like plates to a decking structure. The substrate is typically a thermal insulation layer such as a board of gypsum, resin foam or other insulating materials. The decking structure is typically a substructure of sheet steel, concrete or wood. Fasteners are driven through a central recessed hub of the plate to secure the substrate.
  • For some applications, the plate has a heat activated adhesive on an upper surface of the plate. A barrier membrane, which is typically a single ply waterproof membrane, is installed over the substrate and the grid of metal plates. An induction tool, which generates magnetic eddy currents in the metal plate, heats the metal plate and activates the adhesive. Upon cooling and setting, the adhesive then bonds the underside of the membrane to the plate.
  • The membrane covers the plates prior to setting of the adhesive. For some conventional applications, there is a tendency for air to be trapped in the hub recess of the plate. The hub portion is sealed to the substrate at the bottom by the fastener head and at the top by the membrane. During the heating cycle, the trapped air expands. When the plate cools and the adhesive sets, a vacuum forms in the hub recess. The vacuum may draw the membrane into the recess and form concave pockets or indentations across the top of the membrane surface. The consequence of the membrane indentations formed across the membrane surface is that the stretching of the membrane into the indentations results in stress on the membrane, and the membrane may also tend to be susceptible to moisture retention—ultimately jeopardizing the barrier bonding and integrity of the membrane.
  • Related phenomena may also occur in other systems that employ various forms of plates and fastening techniques. When a solvent based adhesive is applied to the top of the plates, the solvent vaporizes and may partially become trapped in the hub recess upon covering by the membrane. The trapped solvent may cause the membrane to essentially form a convex-like bubble. Such bubbles tend to cause peeling at the plate/membrane bonding interface and jeopardize the bond.
  • SUMMARY
  • A roofing plate comprises a central recessed portion which has a central axial opening. A raised portion surrounds the recessed portion. A wall which may be of a frustoconical form connects the raised portion and the central portion. A vent opening is formed in the wall. A peripheral rim surrounds the raised portion. In one embodiment the recessed portion wall, raised portion and rim are generally symmetric about the axial opening. The plate is preferably metal. A heat activated adhesive may be applied to the raised portion of the plate. The plate may be a one-piece integral member.
  • A method for installing a roofing system comprises driving a fastener through a recessed portion of a roofing plate to secure a substrate such as an insulation board to a decking structure. A membrane is placed over the plate and substrate. The membrane is bonded to the substrate to form a cavity between the recessed portion and the membrane. The cavity is vented through a wall of the plate. A heat activated adhesive may be applied to the plate prior to securing the plate into position. Alternatively, an adhesive may be applied to the plate after the plate is secured. A multiplicity of roofing plates are employed for securing the substrate to the deck. The cavities formed in the plates are vented during the installation.
  • A roof installation comprises a decking structure. A substrate covers the decking structure. A roofing plate has a fastener driven through the hub and into the structure to secure the substrate to the structure. A member overlies the substrate and is bonded to the substrate by adhesive. A cavity is formed between the hub and the membrane. A vent path through the plate communicates with the cavity. The plate may be metal and the adhesive may be heat activated adhesive, pre-applied to the plate. The vent path is located in a side wall of the recessed hub.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a top plan view of a roofing plate;
  • FIG. 2 is a sectional view of the roofing plate of FIG. 1 taken along the line 2-2 thereof;
  • FIG. 3 is a sectional view of a roof installation, showing a roofing plate, a fastener, a substrate, a decking structure and an overlying barrier membrane;
  • FIG. 4 is a perspective view of an installment stage of a roofing installation showing a plurality of roofing plates secured to a substrate prior to covering by a roofing membrane; and
  • FIG. 5 is a sectional view of a prior art roof installation showing a prior art roofing plate, a fastener, a substrate, a decking structure and an overlying barrier membrane.
  • DETAILED DESCRIPTION
  • With reference to the drawings wherein like numerals represent like parts throughout the several figures, a roofing plate is designated generally by the numeral 10. The roofing plate 10 preferably has a generally disc-like shape and a sturdy, reinforced construction. The plate is secured to the decking structure 20 by a fastener 12 for retaining the substrate 22 in position to a deck substructure. For a given installation, numerous plates are employed for the substrate and positioned in a grid-like pattern. The substrate 22 is typically a thermal insulation layer such as an insulation board. The deck structure 20 may be a steel sheet or concrete. The roofing plate is configured to properly engage the substrate and facilitate proper orientation of the fastener.
  • The roofing plate 10 has a central recessed hub 30 which defines the central opening 32 for the fastener. The bottom surface 34 of the hub provides the plate engagement structure for the underside of the head 14 of the fastener. The peripheral side 36 of the central hub tapers upwardly (preferably a frustoconical surface) to integrally join with an annular raised platform portion 40. The peripheral portion of the raised platform integrally tapers downwardly to form a circumferential rim 42 which engages the substrate. Surface 34 and rim 42 are generally parallel and have a spacing slightly offset from a co-planar relationship. In some embodiments, the rim 42 is co-planar with the central surface 34 of the recessed hub. In the illustrated embodiment, the plate 10, rim 42, raised platform 40 and central hub 30 are generally axially symmetric about a central axis through the fastener opening. The plate may be stamped from metal. Other plate shapes which employ a recessed hub are also possible.
  • A vent opening 50 is formed in the tapered recessed wall 36 of the hub. In one embodiment, for a plate having a platform diameter P of 80 mm or 2.66 ins. and a hub surface diameters of 1.16 ins., the diameter of the vent opening 50 is 0.125 ins. and the opening is located at the midpoint of the frustoconical side 36. The diameter H of the hub is 1.51 ins. and has a depth D of approximately 0.17 ins. In some embodiments more than one such opening may be formed. The opening 50 provides a vent passage which tends to equalize the pressure within the hub and surrounding region during installation and post-installation and throughout the useful life of the installation provided by the roofing plates.
  • Roofing plate 10 may be affixed with a heat activated adhesive 44 which is applied to the raised platform 40 of the plate. In typical roof installations, numerous roofing plates are secured to the substrate via a fastener which tightens against the recessed portion.
  • With reference to FIGS. 3 and 4, a barrier membrane 24 is then installed over the top of the roofing plates 10 and the substrate 20. The barrier membrane is typically a single-ply moisture resistant or waterproof sheet. The sheet is transported to the roofing structure in roll form and unrolled across the substrate.
  • An induction tool (not illustrated) on top of the membrane 24 is brought into the vicinity of the metal plates positioned under the membrane. The induction tool is energized so that magnetically induced eddy currents within the metal plate 10 heat the metal plate to thereby activate the adhesive 44. The adhesive, which is sandwiched between the membrane 24 and the platform 40 of the plate, is ultimately cooled so that the adhesive sets and bonds the barrier membrane to the plates. In some embodiments, the adhesive may be mixed with metallic particles and the plate may not be metal.
  • Because in conventional installations, the barrier membrane essentially hermetically seals across the top of the hub and the bottom surface of the hub is sealingly engaged against the substrate, an air pocket may be typically formed in the hub. Under such conditions, when the prior art plate 11 cools, a seal forms between the underside of the fastener head and the top side of the plate adjacent the hole. A vacuum could be created in the hub thereby forming a depression 27 such as illustrated in FIG. 5.
  • However, with reference to FIG. 3 and plate 10, because of the vent opening 50, the pressure will rapidly be equalized with the surrounding region and consequently upon cooling and bonding of the plate, the pressure within the hub recess will not be sufficiently different to result in creation of an indentation in the membrane. The membrane will essentially bond in a substantially planar, flat relationship 26 across the entire expanse of the plate (which may-be slightly elevated above the substrate).
  • In an installation wherein the induction heat activated process is not employed, the roofing plates are secured against the substrate in a grid-like pattern to anchor the substrate to the decking structure. Solvent based adhesive is then sprayed or otherwise applied across the tops of plates. The barrier membrane is then laid or rolled over the substrate and plates. Any solvent which typically vaporizes off from the adhesive which may become trapped in the recessed hub will be vented via the vent opening 50 to essentially equalize the local pressure and prevent any bubbling effect across the membrane.
  • While preferred embodiments of the foregoing have been set forth for purposes of description, the foregoing should not be deemed a limitation. Accordingly, various modifications, adaptations or alternatives may occur to one skilled in the art without departing from the spirit and the scope of the appended claims.

Claims (14)

  1. 1. A roofing plate comprising:
    a central recessed portion defining a central axial opening;
    a raised portion surrounding said recessed portion;
    a wall connecting said raised portion and central portion and defining a vent opening; and
    a peripheral rim surrounding said raised portion.
  2. 2. The roofing plate of claim 1 wherein said recessed portion, said wall, said raised portion and said rim are generally symmetric about said axial opening.
  3. 3. The roofing plate of claim 1 wherein said plate is metal.
  4. 4. The roofing plate of claim 3 further comprising a heat activated adhesive applied to said raised portion.
  5. 5. The roofing plate of claim 1 wherein said plate is a one piece integral member.
  6. 6. A method for installing a roofing system comprising:
    (a) driving a fastener through a recessed portion of a roofing plate to secure a substrate to a decking structure;
    (b) placing a membrane over said plate and substrate;
    (c) bonding said membrane to said substrate to form a cavity between said recessed portion and said membrane; and
    (d) venting said cavity through a wall of said plate.
  7. 7. The method of claim 6 wherein step 1 (c) further comprises applying an adhesive to said plate.
  8. 8. The method of claim 6 wherein step (c) further comprises heating a heat activated adhesive applied to the plate.
  9. 9. The method of claim 6 wherein step (a) further comprises driving a fastener through a recessed portion of a roofing plate for a multiplicity of roofing plates, and steps (c) and (d) further comprise forming a cavity for each said plate and venting each said cavity.
  10. 10. A roof installation comprising:
    a decking structure;
    a substrate covering said decking structure;
    a roofing plate having a recessed hub with a fastener driven through said hub and into said structure to secure said substrate to said structure;
    a membrane overlying said substrate and bonded to said substrate by adhesive and forming a cavity between said recessed hub and said membrane; and
    a vent path communicating through said plate with said cavity.
  11. 11. The roof installation of claim 10 wherein said adhesive is heat activated adhesive applied to said plate.
  12. 12. The roof installation of claim 10 wherein said plate is metal.
  13. 13. The roof installation of claim 10 further comprising a multiplicity of roofing plates and fasteners each of which form a cavity and a vent path communicating through said plate with said cavity.
  14. 14. The roof installation of claim 10 wherein said vent path is located in a sidewall of said recessed hub.
US12221957 2008-08-08 2008-08-08 Roofing plate, installation and method therefor Abandoned US20100031595A1 (en)

Priority Applications (1)

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US12221957 US20100031595A1 (en) 2008-08-08 2008-08-08 Roofing plate, installation and method therefor

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Application Number Priority Date Filing Date Title
US12221957 US20100031595A1 (en) 2008-08-08 2008-08-08 Roofing plate, installation and method therefor

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US20100031595A1 true true US20100031595A1 (en) 2010-02-11

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090145078A1 (en) * 2007-12-09 2009-06-11 Armin Herb Sealing element
US20120017529A1 (en) * 2010-07-20 2012-01-26 Shadwell Peter J Roof Insulation Fastening System

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US4467581A (en) * 1982-02-24 1984-08-28 Single-Ply Institute Of America, Inc. Membrane anchor system with metal body
US4574551A (en) * 1984-05-23 1986-03-11 Giannuzzi Louis Load-bearing plate
US4641472A (en) * 1978-03-02 1987-02-10 W. R. Grace & Co. Fastener for securing roofing material to cementitious roof decks having removable tab
US4726164A (en) * 1987-03-16 1988-02-23 Elco Industries, Inc. Fastener assembly for a roof membrane
US4744187A (en) * 1987-01-27 1988-05-17 The Firestone Tire & Rubber Company Mechanical roof fastener
US4747241A (en) * 1985-08-09 1988-05-31 Whitman Robert E Device for facilitating installation of rubber roof sheets
US4763456A (en) * 1987-08-03 1988-08-16 Giannuzzi Louis Roof anchor and stress plate assembly
US4787188A (en) * 1986-01-02 1988-11-29 Engineered Construction Components Stress plate and method of using same for securing a roof membrane to a roof deck
US4803823A (en) * 1987-04-28 1989-02-14 Stenson John F Rigid insulation corner fastener
US4900208A (en) * 1988-06-09 1990-02-13 Kaiser Norbert O Roofing fastener
US4945699A (en) * 1986-01-02 1990-08-07 Engineered Construction Components (America) Stress plate
US4987714A (en) * 1988-08-25 1991-01-29 Lemke Stuart H Method for installing a roof fastener
US5018329A (en) * 1989-10-05 1991-05-28 Illinois Tool Works Inc. Attachment of roofing washer with heat-sealed screw-washer assemblage
US5069589A (en) * 1988-08-25 1991-12-03 Lemke Stuart H Stress plate for roof membrane fastener assembly
US5088259A (en) * 1987-11-16 1992-02-18 Myers J Milton Roof construction system
US5102275A (en) * 1990-10-29 1992-04-07 Construction Fasteners, Inc. Deck plate and assembly
US5267423A (en) * 1987-08-03 1993-12-07 Giannuzzi Louis Self-drilling anchor and bearing plate assembly
US5311716A (en) * 1992-01-24 1994-05-17 Siplast, S.A. Waterproof covering device for a roof or the like
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US5803693A (en) * 1997-04-17 1998-09-08 Olympic Manufacturing Group, Inc. Swiveling roofing washer
USRE35902E (en) * 1993-05-14 1998-09-22 Jennmar Corporation Bearing plate
US5882043A (en) * 1997-10-14 1999-03-16 Exterior Research & Design, Llc Roof drain adapter
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US6095737A (en) * 1999-03-05 2000-08-01 Es Products Sheet metal anchor nail fastener with locking staple
US6205730B1 (en) * 1999-01-13 2001-03-27 Illinois Tool Works Inc Roofing plate for securing roofing membrane
US6233889B1 (en) * 2000-04-14 2001-05-22 Construction Fasteners, Inc. Ventilated roof membrane plate and method of installing membrane roof utilizing same
US6250034B1 (en) * 1999-11-09 2001-06-26 Construction Fasteners, Inc. Membrane plate
US6282857B1 (en) * 2000-03-09 2001-09-04 Sarnafil, Inc. Articulating plate assembly for retaining sheets of roofing material on a roof surface
US20030033780A1 (en) * 2001-08-20 2003-02-20 Riaz Hasan Seam plate for retaining roof decking membrane
US6640511B1 (en) * 1999-08-17 2003-11-04 Valro Manufacturing Limited Anchor plates
US6722095B2 (en) * 2001-08-20 2004-04-20 Illinois Tool Works Inc. Seam plate for retaining roof decking membrane
USD493705S1 (en) * 2003-02-03 2004-08-03 Building Materials Investment Corporation Ellipsoidal double barbed plate with fastener
US20040148888A1 (en) * 2003-02-03 2004-08-05 Kuhn William P. Double barbed plate with fastener
USD494459S1 (en) * 2003-02-03 2004-08-17 Building Materials Investment Corporation Circular double barbed plate with fastener
US20050166503A1 (en) * 2004-01-09 2005-08-04 Illinois Tool Works Inc. Insulation plate for retaining roof decking membranes and for removing the adhesive release film or release sheet
US6952902B2 (en) * 2002-09-04 2005-10-11 Pinconning Metals, Inc. Attachment plate
US20060185289A1 (en) * 2005-02-23 2006-08-24 Illinois Tool Works Inc. Seam plate, for retaining roof decking membranes, having means for preventing interlocking of adjacent plates
US20090173028A1 (en) * 2008-01-09 2009-07-09 Talan Products, Inc. Roofing Membrane Retainer

Patent Citations (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4641472A (en) * 1978-03-02 1987-02-10 W. R. Grace & Co. Fastener for securing roofing material to cementitious roof decks having removable tab
US4467581A (en) * 1982-02-24 1984-08-28 Single-Ply Institute Of America, Inc. Membrane anchor system with metal body
US4574551A (en) * 1984-05-23 1986-03-11 Giannuzzi Louis Load-bearing plate
US4747241A (en) * 1985-08-09 1988-05-31 Whitman Robert E Device for facilitating installation of rubber roof sheets
US4945699A (en) * 1986-01-02 1990-08-07 Engineered Construction Components (America) Stress plate
US4787188A (en) * 1986-01-02 1988-11-29 Engineered Construction Components Stress plate and method of using same for securing a roof membrane to a roof deck
US4744187A (en) * 1987-01-27 1988-05-17 The Firestone Tire & Rubber Company Mechanical roof fastener
US4726164A (en) * 1987-03-16 1988-02-23 Elco Industries, Inc. Fastener assembly for a roof membrane
US4803823A (en) * 1987-04-28 1989-02-14 Stenson John F Rigid insulation corner fastener
US4763456A (en) * 1987-08-03 1988-08-16 Giannuzzi Louis Roof anchor and stress plate assembly
US5267423A (en) * 1987-08-03 1993-12-07 Giannuzzi Louis Self-drilling anchor and bearing plate assembly
US5088259A (en) * 1987-11-16 1992-02-18 Myers J Milton Roof construction system
US4900208A (en) * 1988-06-09 1990-02-13 Kaiser Norbert O Roofing fastener
US5069589A (en) * 1988-08-25 1991-12-03 Lemke Stuart H Stress plate for roof membrane fastener assembly
US4987714A (en) * 1988-08-25 1991-01-29 Lemke Stuart H Method for installing a roof fastener
US5018329A (en) * 1989-10-05 1991-05-28 Illinois Tool Works Inc. Attachment of roofing washer with heat-sealed screw-washer assemblage
US5102275A (en) * 1990-10-29 1992-04-07 Construction Fasteners, Inc. Deck plate and assembly
US5378102A (en) * 1991-09-30 1995-01-03 Sfs Stadler, Inc. Barrel assembly and composite stress plate
US5311716A (en) * 1992-01-24 1994-05-17 Siplast, S.A. Waterproof covering device for a roof or the like
USRE35902E (en) * 1993-05-14 1998-09-22 Jennmar Corporation Bearing plate
US5951225A (en) * 1993-12-10 1999-09-14 Sfs Industrie Holding Ag Large-area washer
US5709059A (en) * 1996-04-03 1998-01-20 Exterior Research & Design, Llc Fastener for cementitious substrate
US5803693A (en) * 1997-04-17 1998-09-08 Olympic Manufacturing Group, Inc. Swiveling roofing washer
US5882043A (en) * 1997-10-14 1999-03-16 Exterior Research & Design, Llc Roof drain adapter
US6205730B1 (en) * 1999-01-13 2001-03-27 Illinois Tool Works Inc Roofing plate for securing roofing membrane
US6095737A (en) * 1999-03-05 2000-08-01 Es Products Sheet metal anchor nail fastener with locking staple
US6640511B1 (en) * 1999-08-17 2003-11-04 Valro Manufacturing Limited Anchor plates
US6250034B1 (en) * 1999-11-09 2001-06-26 Construction Fasteners, Inc. Membrane plate
US6282857B1 (en) * 2000-03-09 2001-09-04 Sarnafil, Inc. Articulating plate assembly for retaining sheets of roofing material on a roof surface
US6233889B1 (en) * 2000-04-14 2001-05-22 Construction Fasteners, Inc. Ventilated roof membrane plate and method of installing membrane roof utilizing same
US20030033780A1 (en) * 2001-08-20 2003-02-20 Riaz Hasan Seam plate for retaining roof decking membrane
US6665991B2 (en) * 2001-08-20 2003-12-23 Illinois Tool Works Inc. Seam plate for retaining roof decking membrane
US6722095B2 (en) * 2001-08-20 2004-04-20 Illinois Tool Works Inc. Seam plate for retaining roof decking membrane
US6952902B2 (en) * 2002-09-04 2005-10-11 Pinconning Metals, Inc. Attachment plate
USD493705S1 (en) * 2003-02-03 2004-08-03 Building Materials Investment Corporation Ellipsoidal double barbed plate with fastener
US20040148888A1 (en) * 2003-02-03 2004-08-05 Kuhn William P. Double barbed plate with fastener
USD494459S1 (en) * 2003-02-03 2004-08-17 Building Materials Investment Corporation Circular double barbed plate with fastener
US20050166503A1 (en) * 2004-01-09 2005-08-04 Illinois Tool Works Inc. Insulation plate for retaining roof decking membranes and for removing the adhesive release film or release sheet
US7631468B2 (en) * 2005-02-23 2009-12-15 Omg Roofing, Inc. Seam plate, for retaining roof decking membranes, having means for preventing interlocking of adjacent plates
US20060185289A1 (en) * 2005-02-23 2006-08-24 Illinois Tool Works Inc. Seam plate, for retaining roof decking membranes, having means for preventing interlocking of adjacent plates
US20090173028A1 (en) * 2008-01-09 2009-07-09 Talan Products, Inc. Roofing Membrane Retainer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090145078A1 (en) * 2007-12-09 2009-06-11 Armin Herb Sealing element
US7818940B2 (en) * 2007-12-19 2010-10-26 Hilti Aktiengesellschaft Sealing element
US20120017529A1 (en) * 2010-07-20 2012-01-26 Shadwell Peter J Roof Insulation Fastening System
US8763332B2 (en) * 2010-07-20 2014-07-01 Handy & Harman Roof insulation fastening system

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