US20070204542A1 - Top side venting of lightweight concrete in roof systems - Google Patents

Top side venting of lightweight concrete in roof systems Download PDF

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Publication number
US20070204542A1
US20070204542A1 US11/712,251 US71225107A US2007204542A1 US 20070204542 A1 US20070204542 A1 US 20070204542A1 US 71225107 A US71225107 A US 71225107A US 2007204542 A1 US2007204542 A1 US 2007204542A1
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United States
Prior art keywords
roof
top surface
grooves
concrete deck
insulating concrete
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Abandoned
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US11/712,251
Inventor
Henry Gembala
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CONCRECEL USA LLC
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Henry Gembala
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Application filed by Henry Gembala filed Critical Henry Gembala
Priority to US11/712,251 priority Critical patent/US20070204542A1/en
Publication of US20070204542A1 publication Critical patent/US20070204542A1/en
Assigned to CONCRECEL USA, LLC reassignment CONCRECEL USA, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GEMBALA, HENRY
Abandoned legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage; Sky-lights
    • E04D13/17—Ventilation of roof coverings not otherwise provided for
    • E04D13/172—Roof insulating material with provisions for or being arranged for permitting ventilation of the roof covering
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/002—Coverings or linings, e.g. for walls or ceilings made of webs, e.g. of fabrics, or wallpaper, used as coverings or linings

Definitions

  • This invention relates to roofing systems, and, more particularly, to roofing systems that use lightweight insulating concrete with an overly inter-ply sheet and cap membrane on flat or low sloped roof areas.
  • roof systems that use lightweight concrete with or without insulation require a base sheet membrane to be mechanically installed to the lightweight concrete for the purpose of allowing moisture to migrate.
  • a base sheet membrane to be mechanically installed to the lightweight concrete for the purpose of allowing moisture to migrate.
  • additional layers of roofing membrane are attached to the base sheet by either self adhesive, heat weld or cold adhesive. This bonds the membranes together to make up the roof assembly.
  • the mechanically attached base sheet membrane used in flat and low sloped roof systems, there are significant drawbacks associated with its use.
  • the increased amount of penetrating fasteners that need to be installed in order to meet the wind uplift requirements actually damage the lightweight the concrete at corners and along the perimeter of the roof.
  • a primary object of the present invention is to eliminate the use of the mechanically attached base sheet currently used in flat or low sloped roof systems and to provide the new or existing lightweight concrete with V-grooves on the top surface which replace the function of the base sheet and allow the venting of moisture to travel to the roof perimeter and exit the roof system.
  • the present invention is directed to an improved roof venting system that eliminates the need of a base sheet membrane that is presently used and that is mechanically attached with fasteners to new or existing lightweight concrete.
  • An improved venting system is achieved by installing an arrangement of V-grooves during the installation of new lightweight concrete.
  • the V-grooves are approximately 1 ⁇ 2 inch to 1 inch deep and are spaced at approximately 3 to 12 inches apart.
  • the V-grooves are installed during the finishing of the top coat using a 4 inch wide by 4 foot long aluminum flat bar having V-groove forming blades welded to bottom side of the tool.
  • the V-groove blades are installed 3 inches on center, 6 inches on center or 12 inches on center, depending on the individual venting needs on new lightweight concrete.
  • V-grooves are cut into the top surface of the lightweight concrete deck with a carbine blade.
  • the V-grooves allow heat and moisture to migrate to the perimeter of the roof and out the vent holes of an A.R.B.S. (Alternative Roof Blocking System) of the type disclosed in U.S. Pat. No. 6,237,293 B1.
  • A.R.B.S. Alternative Roof Blocking System
  • FIG. 1 is a partial perspective view of the lightweight concrete over structural decking having V-grooves installed in the top side of lightweight concrete in order to provide venting for flat or low sloped roof systems without the use of a mechanically attached base sheet;
  • FIG. 2 is a partial perspective view showing the roof system of FIG. 1 and illustrating formation of the V-Grooves in the top side of the lightweight concrete by raking with a tool.
  • the improved venting system of the present invention is used in conjunction with a low sloped or flat roof system of the type which uses lightweight insulating concrete.
  • a roof system 10 is applied to a structural roof deck 100 of a building.
  • the system includes a lightweight insulating concrete deck comprising a base layer of lightweight concrete 20 , EPS Holey board insulation 22 and a top layer of lightweight concrete 24 .
  • the venting system of the present invention is achieved by installing a series of parallel V-grooves 30 on the top side 26 of the top coat 24 of lightweight concrete.
  • the V-grooves 30 are spaced between 3 inches and 12 inches apart on center and are preferably between 1 ⁇ 2 inch to 1 inch deep.
  • the V-grooves are formed during the finishing of the top coat 24 using a rake tool 50 , as seen in FIG. 2 .
  • the rake tool 50 has a 4 inch wide by 4 foot long aluminum flat bar 22 having an arrangement of spaced V-groove forming blades 54 on the bottom side.
  • the rake tool 50 preferably has an elongate pole with a handle. The pole is fixed to the flat bar and extends upwardly at an angle to facilitate ease of use. The rake 50 is dragged across the top coat 24 to form the V-grooves 30 in the top side 26 .
  • the V-grooves are cut into the top side 26 with the use of a carbine blade on a rotary saw.
  • roof membrane 58 are attached to the top side of the lightweight insulating concrete deck.
  • the one or more roof membrane plies 58 are attached to the top side 26 by self adhesion, heat welding or with the use of cold adhesives.
  • the V-grooves 30 allow heat and moisture to migrate (i.e., within the grooves 30 ) to the perimeter of the low sloped roof and to release out through vent holes of an A.R.B.S. (Alternative Roof Blocking System) 60 , as seen in FIG. 1 .
  • A.R.B.S. Alternative Roof Blocking System

Abstract

An assembly and method for venting a flat or low sloped roof system eliminates the need for a base sheet membrane and fasteners and provides a spaced arrangement of V-grooves formed in the top surface of a new or existing lightweight concrete deck. The V-grooves allow moisture to migrate to the perimeter of the roof and exit the roof system. Instead of attaching a base sheet membrane to the lightweight concrete deck using penetrating fasteners, the roof membrane plies are attached directly to the primed lightweight concrete deck by self-adhesion, heat welding or with the use of cold adhesives. This prevents damage to the structural integrity of the underlying lightweight concrete, while providing an improved roof venting system.

Description

  • This non-provisional patent application is based on provisional patent application Ser. No. 60/778,204 filed on Mar. 2, 2006. Applicant claims the benefit of the provisional patent application filing date under Title 35, United States Code section 119(e).
    • BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • This invention relates to roofing systems, and, more particularly, to roofing systems that use lightweight insulating concrete with an overly inter-ply sheet and cap membrane on flat or low sloped roof areas.
  • 2. Discussion of the Related Art
  • Generally, roof systems that use lightweight concrete with or without insulation require a base sheet membrane to be mechanically installed to the lightweight concrete for the purpose of allowing moisture to migrate. Once the base sheet is mechanically attached to the lightweight concrete, additional layers of roofing membrane are attached to the base sheet by either self adhesive, heat weld or cold adhesive. This bonds the membranes together to make up the roof assembly. Despite the widespread use of the mechanically attached base sheet membrane, used in flat and low sloped roof systems, there are significant drawbacks associated with its use. In particular, the increased amount of penetrating fasteners that need to be installed in order to meet the wind uplift requirements actually damage the lightweight the concrete at corners and along the perimeter of the roof. The resultant damage to the lightweight concrete, caused by the closely spaced fasteners, eventually leads to deck failure. Furthermore, when the roof needs to be replaced, requiring removal of the base sheet and fasteners, holes are left in the lightweight concrete. Thereafter, a new base sheet membrane is installed, and new fasteners penetrate additional areas of the existing lightweight concrete deck. Consequently, further damage is caused to the lightweight concrete deck.
  • It should be noted that the benefit of using lightweight concrete in lieu of insulation is not only to provide a slope for the roof system, but also to provide the owner with an insulating system that will remain intact after re-roofing and continue to provide the owner the slope and insulating value for all future roof systems.
  • In view of these shortcomings of the traditional mechanically attached base sheet membrane, there exists an urgent need in the roofing industry for an alternative venting system for new and existing lightweight concrete deck structures which overcomes the above described problems. More specifically, there is a need for a venting system that will allow moisture to travel to the perimeter of the roof, where the moisture can exit the roof assembly thru an A.R.B.S. (Alternative Roof Blocking System) of the type disclosed in U.S. Pat. No. 6,237,293 B1. Further, there is a need for venting the top side of a new or existing lightweight concrete deck which will considerably reduce costs for labor and material by eliminating the installation of the base sheet membrane and fasteners that are currently required for attachment to the lightweight concrete deck.
    • OBJECTS AND ADVANTAGES OF THE INVENTION
  • A primary object of the present invention is to eliminate the use of the mechanically attached base sheet currently used in flat or low sloped roof systems and to provide the new or existing lightweight concrete with V-grooves on the top surface which replace the function of the base sheet and allow the venting of moisture to travel to the roof perimeter and exit the roof system.
  • It is a further object of the present invention to provide necessary top side venting of a new or existing lightweight concrete roof deck without compromising the structural integrity of the lightweight system that is presently caused by installation of the base sheet membrane with mechanical fasteners that penetrate the lightweight concrete.
  • It is still a further object of the present invention to provide venting means in a low-sloped roof system which will release heat and moisture through an arrangement of V-grooves formed in the top side of a lightweight concrete deck.
    • SUMMARY OF THE INVENTION
  • The present invention is directed to an improved roof venting system that eliminates the need of a base sheet membrane that is presently used and that is mechanically attached with fasteners to new or existing lightweight concrete. An improved venting system is achieved by installing an arrangement of V-grooves during the installation of new lightweight concrete. The V-grooves are approximately ½ inch to 1 inch deep and are spaced at approximately 3 to 12 inches apart. The V-grooves are installed during the finishing of the top coat using a 4 inch wide by 4 foot long aluminum flat bar having V-groove forming blades welded to bottom side of the tool. The V-groove blades are installed 3 inches on center, 6 inches on center or 12 inches on center, depending on the individual venting needs on new lightweight concrete. On existing lightweight concrete, the V-grooves are cut into the top surface of the lightweight concrete deck with a carbine blade. The V-grooves allow heat and moisture to migrate to the perimeter of the roof and out the vent holes of an A.R.B.S. (Alternative Roof Blocking System) of the type disclosed in U.S. Pat. No. 6,237,293 B1.
    • BRIEF DESCRIPTIONS OF THE DRAWINGS
  • For a fuller understanding of the nature of the present invention, reference should be made to the detailed description taken in conjunction with the accompanying drawings in which:
  • FIG. 1 is a partial perspective view of the lightweight concrete over structural decking having V-grooves installed in the top side of lightweight concrete in order to provide venting for flat or low sloped roof systems without the use of a mechanically attached base sheet; and
  • FIG. 2 is a partial perspective view showing the roof system of FIG. 1 and illustrating formation of the V-Grooves in the top side of the lightweight concrete by raking with a tool.
    •
  • Like reference numerals refer to like parts throughout the several views of the drawings.
    • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • The improved venting system of the present invention is used in conjunction with a low sloped or flat roof system of the type which uses lightweight insulating concrete. Referring to FIG. 1 and 2, a roof system 10 is applied to a structural roof deck 100 of a building. The system includes a lightweight insulating concrete deck comprising a base layer of lightweight concrete 20, EPS Holey board insulation 22 and a top layer of lightweight concrete 24. The venting system of the present invention is achieved by installing a series of parallel V-grooves 30 on the top side 26 of the top coat 24 of lightweight concrete. The V-grooves 30 are spaced between 3 inches and 12 inches apart on center and are preferably between ½ inch to 1 inch deep. When new lightweight concrete is being installed, the V-grooves are formed during the finishing of the top coat 24 using a rake tool 50, as seen in FIG. 2. In a preferred embodiment, the rake tool 50 has a 4 inch wide by 4 foot long aluminum flat bar 22 having an arrangement of spaced V-groove forming blades 54 on the bottom side. While not shown, the rake tool 50 preferably has an elongate pole with a handle. The pole is fixed to the flat bar and extends upwardly at an angle to facilitate ease of use. The rake 50 is dragged across the top coat 24 to form the V-grooves 30 in the top side 26. On existing lightweight concrete, the V-grooves are cut into the top side 26 with the use of a carbine blade on a rotary saw.
  • Once the V-grooves 30 are formed in the top side 26, one or more layers of roof membrane 58 are attached to the top side of the lightweight insulating concrete deck. The one or more roof membrane plies 58 are attached to the top side 26 by self adhesion, heat welding or with the use of cold adhesives.
  • The V-grooves 30 allow heat and moisture to migrate (i.e., within the grooves 30) to the perimeter of the low sloped roof and to release out through vent holes of an A.R.B.S. (Alternative Roof Blocking System) 60, as seen in FIG. 1.
  • While the present invention has been shown and described in accordance with preferred and practical embodiments thereof, it is recognized that departures from the instant disclosure are contemplated within the spirit and scope of the invention.

Claims (20)

1. A roof system for installation on a roof structure of a building comprising:
a lightweight insulating concrete deck applied on the roof structure, and said lightweight insulating concrete deck including a top surface;
an arrangement of grooves formed in said top surface of said lightweight insulating concrete deck, and said grooves being structured and disposed for directing moisture and liquid to the perimeter of the roof structure; and
at least one layer of roof membrane attached to said top surface of said lightweight insulating concrete deck.
2. The roof system as recited in claim 1 wherein said grooves are arranged in spaced, parallel relation on said top surface of said lightweight insulating concrete deck.
3. The roof system as recited in claim 1 wherein said grooves are at least 0.5 inch deep.
4. The roof system as recited in claim 1 wherein said grooves are between a 0.5 inch and 1.0 inch deep.
5. The roof system as recited in claim 1 wherein said grooves are arranged at spaced, parallel intervals of between 3 inches and 12 inches apart.
6. The roof system as recited in claim 1 wherein said at least one layer of roof membrane is attached directly to said top surface of said lightweight insulating concrete deck by self adhesion.
7. The roof system as recited in claim 1 wherein said at least one layer of roof membrane is attached directly to said top surface of said lightweight insulating concrete deck by heat welding.
8. The roof system as recited in claim 1 wherein said at least one layer of roof membrane is attached directly to said top surface of said lightweight insulating concrete deck by a cold adhesive.
9. The roof system as recited in claim 1 further comprising:
a plurality of layers of roof membrane attached directly to said top surface of said lightweight insulating concrete deck.
10. A roof system for installation on a roof structure of a building comprising:
a lightweight insulating concrete deck applied on the roof structure, and said lightweight insulating concrete deck including a top surface;
an arrangement of grooves formed in said top surface of said lightweight insulating concrete deck, each of said grooves having a V-shaped cross-sectional configuration and said grooves being structured and disposed for directing heat and moisture to the perimeter of the roof structure; and
at least one layer of roof membrane attached to said top surface of said lightweight insulating concrete deck.
11. The roof system as recited in claim 10 wherein said grooves are between 0.5 inch and 1.0 inch deep.
12. The roof system as recited in claim 10 wherein said grooves are arranged at spaced intervals of between 3 inches and 12 inches apart.
13. The roof system as recited in claim 10 wherein said at least one layer of roof membrane is attached directly to said top surface of said lightweight insulating concrete deck by self adhesion.
14. The roof system as recited-in claim 10 wherein said at least one layer of roof membrane is attached directly to said top surface of said lightweight insulating concrete deck by heat welding.
15. The roof system as recited in claim 10 wherein said at least one layer of roof membrane is attached directly to said top surface of said lightweight insulating concrete deck by a cold adhesive.
16. The roof system as recited in claim 10 further comprising:
a plurality of layers of roof membrane attached directly to said top surface of said lightweight insulating concrete deck.
17. A method for venting a flat or low sloped roof system comprising the steps of:
applying a lightweight insulating concrete deck to the top roof deck structure on a building;
forming an arrangement of grooves in a top surface of said lightweight insulating concrete deck; and
attaching at least one layer of roof membrane directly to said top surface of said lightweight insulating concrete deck.
18. The method as recited in claim 17 wherein said step of forming said arrangement of grooves in said top surface further comprises:
moving a rake having a plurality of groove forming blades over said top surface of said lightweight insulating concrete deck during a finishing step of applying said lightweight insulating concrete deck to the top roof deck structure.
19. The method as recited in claim 17 wherein said step of forming said arrangement of grooves in said top surface further comprises the step of:
cutting said arrangement of grooves with a rotary saw.
20. The method as recited in claim 17 wherein in each of the grooves in said arrangement of grooves has a V-shaped cross-sectional configuration and a depth ranging between 0.5 inch and 1.0 inch.
US11/712,251 2006-03-02 2007-02-27 Top side venting of lightweight concrete in roof systems Abandoned US20070204542A1 (en)

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US77820406P 2006-03-02 2006-03-02
US11/712,251 US20070204542A1 (en) 2006-03-02 2007-02-27 Top side venting of lightweight concrete in roof systems

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080110119A1 (en) * 2006-11-10 2008-05-15 Henry Gembala Device and method for reinforcing attachment of lightweight insulating concrete top coat to an underlying roof deck in a roof system
US8381451B1 (en) 2010-09-03 2013-02-26 W.P. Hickman Company Roof edge blocking system

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US1338567A (en) * 1919-10-24 1920-04-27 Flynn Dennis John Reinforced-concrete floor construction
US1564264A (en) * 1924-11-17 1925-12-08 Murray Richard Concrete floor and ceiling construction
US2217675A (en) * 1938-08-09 1940-10-15 Ed Westberg Concrete building structure
US2272659A (en) * 1940-02-01 1942-02-10 Dennis W Daley Wall mold
US2855869A (en) * 1952-11-28 1958-10-14 Munters Carl Georg Roofs of buildings
US3455076A (en) * 1967-08-01 1969-07-15 Johns Manville Roofing membrane with fibrous reinforcing material
US4120131A (en) * 1976-09-03 1978-10-17 Carroll Research, Inc. Building structure
US4331726A (en) * 1979-06-13 1982-05-25 Cleary Patrick J Roofing composition and structure
US4492064A (en) * 1981-12-11 1985-01-08 The B. F. Goodrich Company Insulated roof construction
US4507901A (en) * 1974-04-04 1985-04-02 Carroll Frank E Sheet metal structural shape and use in building structures
US4530193A (en) * 1984-07-16 1985-07-23 Minnesota Diversified Products, Inc. Built-up roof structure and method of preparing roof structure
US4677800A (en) * 1984-08-10 1987-07-07 The Dow Chemical Company Lightweight roofing system
US4937990A (en) * 1987-03-06 1990-07-03 Sibo, Inc. Ventilation system for roofs
US5067298A (en) * 1990-06-28 1991-11-26 The Dow Chemical Company Method for plaza deck construction
US5144782A (en) * 1990-08-15 1992-09-08 Paquette Jean Paul Double-level drainage system for flat roofs
US5383314A (en) * 1993-07-19 1995-01-24 Laticrete International, Inc. Drainage and support mat
US5473847A (en) * 1994-06-23 1995-12-12 Old Reliable Wholesale Inc. Ventilated insulated roofing system
US5740647A (en) * 1995-06-01 1998-04-21 Kelly; Thomas L. Bulit-up roof (BUR) or modified roof assembly system
US5775039A (en) * 1996-05-08 1998-07-07 Glenna Sue Bruns Drainage device
US6128878A (en) * 1998-05-08 2000-10-10 Erickson; Dayle Eugene Portable storage building with concrete floor and method of assembling and moving same
US6393776B1 (en) * 2000-03-24 2002-05-28 James E. Waller Tornado shelter with composite structure and concrete tub encasement
US20040098937A1 (en) * 2000-12-01 2004-05-27 Terry Blake Flood barrier
US20040107662A1 (en) * 2002-02-01 2004-06-10 Georgeau Philip C. Roofing system and method
US6751919B2 (en) * 1999-07-19 2004-06-22 Jorge Gabrielli Zacharias Calixto Sealing element for expansion joints
US20050081468A1 (en) * 2003-10-15 2005-04-21 Progressive Foam Technologies, Inc. Drainage place for exterior wall product
US20050107499A1 (en) * 2003-11-14 2005-05-19 Georgeau Philip C. Moisture curable sealer and adhesive composition
US20050126103A1 (en) * 2003-12-15 2005-06-16 Scheirer David A. Self-adhered roofing components, roofing system, and method
US7281878B2 (en) * 2004-07-21 2007-10-16 Gary Schulz Road surface sound reduction system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1338567A (en) * 1919-10-24 1920-04-27 Flynn Dennis John Reinforced-concrete floor construction
US1564264A (en) * 1924-11-17 1925-12-08 Murray Richard Concrete floor and ceiling construction
US2217675A (en) * 1938-08-09 1940-10-15 Ed Westberg Concrete building structure
US2272659A (en) * 1940-02-01 1942-02-10 Dennis W Daley Wall mold
US2855869A (en) * 1952-11-28 1958-10-14 Munters Carl Georg Roofs of buildings
US3455076A (en) * 1967-08-01 1969-07-15 Johns Manville Roofing membrane with fibrous reinforcing material
US4507901A (en) * 1974-04-04 1985-04-02 Carroll Frank E Sheet metal structural shape and use in building structures
US4120131A (en) * 1976-09-03 1978-10-17 Carroll Research, Inc. Building structure
US4331726A (en) * 1979-06-13 1982-05-25 Cleary Patrick J Roofing composition and structure
US4492064A (en) * 1981-12-11 1985-01-08 The B. F. Goodrich Company Insulated roof construction
US4530193A (en) * 1984-07-16 1985-07-23 Minnesota Diversified Products, Inc. Built-up roof structure and method of preparing roof structure
US4677800A (en) * 1984-08-10 1987-07-07 The Dow Chemical Company Lightweight roofing system
US4937990A (en) * 1987-03-06 1990-07-03 Sibo, Inc. Ventilation system for roofs
US5067298A (en) * 1990-06-28 1991-11-26 The Dow Chemical Company Method for plaza deck construction
US5144782A (en) * 1990-08-15 1992-09-08 Paquette Jean Paul Double-level drainage system for flat roofs
US5383314A (en) * 1993-07-19 1995-01-24 Laticrete International, Inc. Drainage and support mat
US5473847A (en) * 1994-06-23 1995-12-12 Old Reliable Wholesale Inc. Ventilated insulated roofing system
US5740647A (en) * 1995-06-01 1998-04-21 Kelly; Thomas L. Bulit-up roof (BUR) or modified roof assembly system
US5775039A (en) * 1996-05-08 1998-07-07 Glenna Sue Bruns Drainage device
US6128878A (en) * 1998-05-08 2000-10-10 Erickson; Dayle Eugene Portable storage building with concrete floor and method of assembling and moving same
US6751919B2 (en) * 1999-07-19 2004-06-22 Jorge Gabrielli Zacharias Calixto Sealing element for expansion joints
US6393776B1 (en) * 2000-03-24 2002-05-28 James E. Waller Tornado shelter with composite structure and concrete tub encasement
US20040098937A1 (en) * 2000-12-01 2004-05-27 Terry Blake Flood barrier
US20040107662A1 (en) * 2002-02-01 2004-06-10 Georgeau Philip C. Roofing system and method
US20050081468A1 (en) * 2003-10-15 2005-04-21 Progressive Foam Technologies, Inc. Drainage place for exterior wall product
US20050107499A1 (en) * 2003-11-14 2005-05-19 Georgeau Philip C. Moisture curable sealer and adhesive composition
US20050126103A1 (en) * 2003-12-15 2005-06-16 Scheirer David A. Self-adhered roofing components, roofing system, and method
US7281878B2 (en) * 2004-07-21 2007-10-16 Gary Schulz Road surface sound reduction system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080110119A1 (en) * 2006-11-10 2008-05-15 Henry Gembala Device and method for reinforcing attachment of lightweight insulating concrete top coat to an underlying roof deck in a roof system
US7765757B2 (en) * 2006-11-10 2010-08-03 Henry Gembala Device and method for reinforcing attachment of lightweight insulating concrete top coat to an underlying roof deck in a roof system
US8381451B1 (en) 2010-09-03 2013-02-26 W.P. Hickman Company Roof edge blocking system

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Effective date: 20071203

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