Adhered Roofing Systems with Aqua Base 120 Bonding Adhesive. UL/FM Code Approval Guide Table of Contents February 2012

Transcription

1 Adhered Roofing Systems with Aqua Base 120 Bonding Adhesive UL/FM Code Approval Guide Table of Contents February 2012 UNDERWRITERS LABORATORIES (UL) APPROVAL UL Class A... 1 UL Class B... 2 FACTORY MUTUAL (FM) APPROVALS FM Class 1A-90 - Mechanically Attached... 3 FM Class 1A Mechanically Attached... 4 FM Class 1A-945 Direct Application or Polyisocyanurate Attached With DASH/FAST Adhesive to Structural Concrete... 5 FM Class 1A-915 Dens-Deck or Dens-Deck Prime or OSB Attached with DASH/FAST Adhesive to Structural Concrete... 5 FM Class 1A-660 Versico Recovery Board over Polyiso attached with DASH/FAST Adhesive to Structural Concrete... 5 FM Class 1A-645- Versico Recovery Board or Dens-Deck Prime over EPS attached with DASH/FAST Adhesive to Structural Concrete... 5 FM Class 1A-375- OSB/Polyiso Composite and Membrane Attached with DASH/FAST Adhesive to Structural Concrete... 5 FM Class 1A-150 with DASH/FAST Adhesive to Oriented Strand Board (OSB)... 6 FM Class 1A-90 Attachment to Gypsum with FAST 100-LV Adhesive... 6 FM Class 1A-90 - Base Layer of Fastened; Top Layer of Adhered With DASH/FAST Adhesive... 7 FM Class 1A-240 over Tectum... 8 Existing FM Rating Retained - Adhering to Existing Roof With DASH/FAST Adhesive... 9 FM Class 1A Utilizing Versico 725 Vapor Retarder (Steel Decks) FM Class 1A-660, 1A-915 and 1A Utilizing Versico 725 Vapor Retarder and Secured With DASH/FAST Adhesive (Structural Concrete Decks) FM Class 1A-90 and 1A attached with hot asphalt FM Class 1A-300 and 1A attachment to concrete with OlyBond 500 BA Adhesive FM Class 1A attachment to concrete with OlyBond500 BA Adhesive FM Class 1A-90 - attachment to Tectum with OlyBond500 BA Adhesive FM Class 1A-90 - Base Layer of Fastened; Top Layer of Adhered With OlyBond500 BA Adhesive Page

2 Underwriter Laboratories VersiFleece Adhered Roofing Systems with VersiFleece TPO 100 or 115 Membrane (white, tan or gray) UL Class A * Non-Combustible and Combustible (For combustible decks, gypsum wallboard must be installed beneath the insulation listed) (4) (1)(2) (UL Classified) Thickness Versico Recovery Board (3) 1/2-3 Versico Recovery Board(3)/ Polyisocyanurate Versico Recovery Board(3)/Polystyrene ** Versico Polyisocyanurate MP-H, SecurShield 1/2 Min./Any 1/2 Min./Any 1 Any 1/2 Combustible Dens-Deck Prime 1/4 Min. Dens-Deck Prime/Polyisocyanurate Dens-Deck Prime/ Polystyrene 1/4 Min/Any Versico SecurShield Polyisocyanurate (5) Min. 3 1/2" Versico SecurShield CD (5) Min 1" * As an option to adhering the VersiFleece Membrane with Aqua Base 120 Bonding Adhesive, the membrane can be loose-laid and mechanically fastened to the roof deck in accordance with Versico s VersiFleece Specification. ** Assembly not permitted on combustible decks, even with gypsum board underneath. Dens-Deck Prime must be installed over polystyrene as identified in combustible deck listing. (1) When multiple insulation layers are listed (i.e. Versico Recovery Board/Polyisocyanurate), the insulation listed first (Versico Recovery Board) is directly under the membrane. (2) may be mechanically fastened or attached with DASH/FAST Adhesive, OlyBond500 BA or hot asphalt. (3) 7/16 inch thick non-veneer, APA rated oriented strand board (OSB) may be substituted for Versico Recovery Board in all listed assemblies. The fastening pattern for the OSB must conform with Versico Detail FB-27-C (when mechanically fastened). (4) Minimum 1/2 thick gypsum wallboard can be classified or unclassified with a minimum weight of 1.84 pounds per square foot. 1/4 thick Georgia Pacific Dens-Deck or Sound Deadening Board with a minimum weight of 1.09 pounds per square foot may be substituted for 1/2 thick gypsum wallboard beneath the insulation. On Reroof/No Tearoff projects, where the existing roof is Class A rated, the gypsum board may be eliminated. Existing roofs that are Class B or C rated will require the use of gypsum board to achieve a Class A rating, otherwise, the new roofing system will retain the existing UL rating. (5) joints (bottom layer) must be staggered a minimum of 6 inches from joints in wood deck. 2 1 Aqua Base 120 Codes - 2/2012

3 Underwriters Laboratories VersiFleece TPO 100, 115 or 135 Membrane (white, tan or gray) UL Class B * Thickness Combustible Polyisocyanurate (listed on previous page)/g2 Base Sheet (5) Versico Recovery Board(4)/Polyisocyanurate/ G2 Base Sheet(5) Versico Recovery Board(4)/G2 Base Sheet(5) 1-1/2 Min./ G2 Base Sheet 1/2 Min./1 Min./ G2 Base Sheet 1 Min./ G2 Base Sheet 1/2" 1" Versico SecurShield Polyisocyanurate (3) 1.9 Min. 1/2" * As an option to adhering the VersiFleece Membrane with Aqua Base 120 Bonding Adhesive, the membrane can be loose-laid and mechanically fastened to the roof deck in accordance with Versico s VersiFleece Specification. : (1) When multiple insulation layers are listed (i.e. Versico Recovery Board/Polyisocyanurate), the insulation listed first (Versico Recovery Board) is directly under the membrane. (2) may be mechanically fastened or attached with DASH/FAST Adhesive, OlyBond500 BA or hot asphalt. (3) joints (bottom layer) must be staggered a minimum of 6 inches from joints in wood deck. (4) 7/16 thick non-veneer, APA rated oriented strand board (OSB) may be substituted for Versico Recovery Board in all listed assemblies. The fastening pattern for the OSB must conform with Versico Detail A (when mechanically fastened). (5) Acceptable G2 Base Sheets can be one of the following: Celotex Type G2 Vaporbar GB, GAF Gafglas No. 75 Base Sheet, Manville Glasbase, Owens Corning Perma Ply No. 28 or Tamko Glass Base. Versico s FR Base Sheet 2S is also acceptable. 2 Aqua Base 120 Codes - 2/2012

4 VersiFleece TPO 100, 115 or 135 Membrane (white, tan or gray) FM Class 1A-90 Mechanically Attached with Versico Fasteners (1) (2) Thickness New Construction or Steel (Min. 22 gauge) Wood () (6) Structural Concrete Tectum (7) Gypsum (Tearoff only) (8) Retrofit (No Tearoff) (9): Structural Concrete Gypsum (8) Versico Polyisocyanurate MP-H /4" Versico Recovery Board(3) Versico Recovery Board/Polyisocyanurate(3) Versico Recovery Board/XPS (3)(4) Versico Recovery Board/ EPS(3)(4)(5) 1/2 Min. 1/2 /Refer to FM Approval Guide 1 Dens-Deck Prime Dens-Deck Prime/ Above 1/4 Min. 1/4 Min/See Above 1-1/2 Retrofit (No Tearoff) (9): Versico Polyisocyanurate MP-H Steel (min. 22 gauge) or 1 Only 3/4" Tectum Versico Recovery Board 1/2-1 1 When minimum Polyisocyanurate insulation thickness is 1-1/2 (single or top layer) a reduced fastening density of 1 per 4 square feet can be utilized in the field of the roof. (1) Additional insulation fastening is required at perimeter and corners in accordance with FM Loss Prevention Data Sheets 1-28 and (2) Specific information concerning structural deck requirements (brand names, span capacity, securement criteria, etc.) must be referenced in the current FM Approval Guide and FM Loss Prevention Data Sheet 1-28/1-29. (3) 7/16 thick non-veneer, APA rated oriented strand board (OSB) may be substituted for Versico Recovery Board in all assemblies. For applications directly over steel decks, a thermal barrier of 3/4 thick perlite or 5/8 thick type X gypsum board is required beneath OSB. fastening patterns for OSB are identified in the FM Fastening Requirements in this guide. As an alternate, minimum 1/4 thick Georgia Pacific Dens-Deck (minimum 1/2 directly over steel or wood decks) may also be substituted for Versico Recovery Board. (4) On steel decks, a thermal barrier of FM approved perlite or gypsum board (Type X or Type C ) is required under these insulations. For specific thermal barrier requirements, consult the respective insulation manufacturer or refer to current published FM Approval Guide. (5) EPS insulation must be supplied by an FM approved manufacturer. (6) On FM approved wood decks, minimum 1/4 thick gypsum board must be installed beneath the insulations listed. Polystyrene insulations must incorporate 1/4 gypsum board in addition to standard thermal barrier requirements. (7) FM approved Tectum decks must be minimum 2 thick. If mechanical fastening of insulation is specified, insulation fasteners must penetrate the deck a minimum of 2 (minimum 1-1/2 penetration acceptable for FM 1-60 rating). (6) Existing gypsum decks must be FM approved. If mechanical fastening of insulation is specified, insulation fasteners must penetrate deck a minimum of 1-1/2. (7) Existing roof must be FM Class 1 rated. 3 Aqua Base 120 Codes - 2/2012

5 VersiFleece TPO 100, 115 or 135 Membrane (white, tan or gray) FM Class 1A-120 Mechanically Attached with Versico Fasteners (1) New Construction or Steel (Min. 22 gauge) Structural Concrete Retrofit (No Tearoff) (5): Structural Concrete Versico Polyisocyanurate MP-H Thickness (2) (top layer) Min. 2 (3) Min. 1-1/2 (4) Versico Polyiso MP-H/OSB Composite (1) Additional insulation fastening is required at perimeters and corners in accordance with FM Loss Prevention Data Sheets 1-28 and (2) For maximum thickness of insulation permitted, refer to page 4. (3) Testing conducted on 22 gauge standard FM approved steel deck secured as outlined in the FM Approval Guide and FM Loss Prevention Data Sheet 1-28/1-29. Additional deck fastening is required at roof perimeters and corners. (4) Testing conducted on minimum 22 gauge, Grade E steel decking meeting ASTM A611 or A653 Grade 80. (5) Existing roof must be FM Class 1 rated. 3/4 4 Aqua Base 120 Codes - 2/2012

6 VersiFleece TPO 100, 115 or 135 Membrane (white, tan or gray) FM Ratings Secured to Structural Concrete with DASH/FAST Adhesive New Construction or Structural Concrete Thickness Uplift Rating Versico Polyisocyanurate MP-H /4" Dens-Deck Prime Min. 1/4 Dens-Deck Prime/Polyisocyanurate Dens-Deck Prime/XPS ** Oriented Strand Board/Polyisocyanurate Versico Recovery Board Versico Recovery Board/Polyisocyanurate Versico Recover Board/XPS** Versico Recovery Board/EPS * Dens-Deck Prime/EPS * Versico Polyiso Versico MP-H/OSB Composite Min. 1/4 / See Above Min. 1/4 /FM approved 7/16 /See Above 1/2 Min. 1/2 /See Above 1/2 /FM approved 1/2 /FM Approved Min. 1/4 / / / * EPS must be FM approved and manufactured from BASF, Huntsman or Nova Beads. ** Approved Extruded Polystyrene insulation includes Owens Corning Thermapink/Foamular, DOW Styrofoam and Pactiv. Note: (1) SH hail rating with VersiFleece membrane is pending. 5 Aqua Base 120 Codes - 2/2012

7 VersiFleece TPO 100, 115 or 135 Membrane (white, tan or gray) FM Class 1A-150 OSB Mechanically Fastened; Membrane adhered with Aqua Base 120 Bonding Adhesive Thickness New Construction or Steel (1) OSB (2) over Polyiso 7/16 /See Page 5 1 FM Class 1A-90 Rating - Attachment to Gypsum with FAST 100-LV Adhesive Thickness New Construction/ Versico Polyiso MP-H /4" Versico Recovery Board 1/2 Min. Gypsum (3) Min. 1/2 Versico Versico Recovery Board or Min. 1/4 Versico Dens-Deck Prime(6) Over: Polyisocyanurate Extruded Polystyrene(3) 1 Expanded Polystyrene(4) See Above (1) Minimum 22 gauge FM approved steel deck is secured to minimum 1/4 thick steel structural supports spaced a maximum 6 on center with ITW Buildex TRAXX 5 Fasteners spaced 6 on center. Deck side laps secured maximum 30 on center with ITW Buildex TRAXX 1 Fasteners. (2) OSB is mechanically fastened at the rate of 17 fasteners per 4 x 8 board in the field of the roof with fastening enhancements required at perimeters and corners as outlined in the back of this Approval Guide. (3) Existing gypsum deck must be. 6 Aqua Base 120 Codes - 2/2012

8 VersiFleece TPO 100, 115 or 135 Membrane (white, tan or gray) FM Class 1A-90 Base Layer of Mechanically Fastened; Top Layer of Attached with FAST 100 or 100-LV Adhesive; Membrane adhered with Aqua Base Bonding Adhesive (1) New Construction or Wood (2) Tectum (3) Gypsum (4) (Tearoff Only) Base layer of FM approved Polyisocyanurate insulation (minimum thickness listed on page 4) mechanically fastened to the deck per standard FM Class 1-90 requirements (including enhancements at perimeters and corners). Top Layer of minimum 1/2 thick Versico Recovery Board, 1/4 thick Dens-Deck/Dens- Deck Prime or Polyisocyanurate (from page 4) secured over base layer with DASH/FAST Adhesive 1 with top layer of Versico Recovery Board 1-1/2 with top layer of Dens-Deck Prime 3/4 with top layer of Polyiso (1) Specific information concerning structural deck requirements (brand names, span capacity, securement criteria, etc.) must be referenced in the current FM Approval Guide and FM Loss Prevention Data Sheet 1-28/1-29. (2) On FM approved wood decks, minimum 1/4 thick gypsum board must be installed beneath the insulation listed. (3) FM approved Tectum decks must be minimum 2 thick. fasteners must penetrate the deck a minimum 1-1/2 for FM 1-60 ratings. (4) Existing gypsum decks must be FM approved. fasteners must penetrate the deck a minimum of 1-1/2. 7 Aqua Base 120 Codes - 2/2012

9 (Over Lightweight Insulating Concrete and Tectum Substrates) VersiFleece TPO 100, 115 or 135 Membrane (white, tan or gray) FM Class 1A-90 Application Over Tectum Decks Secured with FAST 100 or 100 LV Adhesive; Membrane Adhered with Aqua Base 120 Bonding Adhesive Thickness Tectum (1) Note: Versico Polyisocyanurate MP-H 1 Min 3/4 Versico Recovery Board/Polyiso 1/2 /(See Above) 1 (1) FM approved minimum 2 thick by 31 wide Tectum deck secured to minimum 1/4 thick steel supports spaced a maximum of 3 on center with two Construction Fasteners, Inc. 2 diameter metal plates and #14 Dekfast Fasteners per panel per support. Screws are driven into 7/32 diameter pilot holes and are spaced 7-1/2 from panel edges. Additional deck fastening required at perimeters and corners per FM Loss Prevention Data Sheet 1-28/ Aqua Base 120 Codes - 2/2012

10 VersiFleece TPO 100, 115 or 135 Membrane (white, tan or gray) Existing FM Rating Retained Secured with FAST 100 or 100-LV Adhesive; Membrane Adhered with Aqua Base 120 Bonding Adhesive Thickness Retrofit (No Tearoff) (1): FM approved roof decks: Steel Wood Tectum Versico Polyisocyanurate MP-H 1 Only 3/4" Versico Recovery Board ½ - 1 1" Retrofit (No Tearoff) (1): FM approved roof decks: Structural Concrete Lightweight Insulating Concrete Gypsum Versico Polyisocyanurate MP-H /4" Versico Recovery Board Versico Recovery Board/ Polyisocyanurate ½ Min. ½ Min/See Above 1" (1) Existing wet materials must be removed and blisters shall be cut out. All gravel must be removed from the roof surface. The existing roof must be adequately secured. Refer to FM Loss Prevention Data Sheet 1-29 for specific guidelines. (2) Existing FM Class 1, type III or IV smooth asphalt BUR, mineral surface cap sheet or modified bitumen. 9 Aqua Base 120 Codes - 2/2012

11 (In conjunction with Versico 725 Vapor Retarder) VersiFleece TPO 100, 115 or 135 Membrane (white, tan or gray) FM Class 1A-120 Utilizing Versico 725 TR Vapor Retarder/Cav-Grip Primer Secured with FAST 100 or 100-LV Adhesive; Membrane adhered with Aqua Base 120 Bonding Adhesive New Construction or Steel (1) (Base Layer Below Vapor Retarder) Min. 1/2 Dens-Deck Prime (2) mechanically fastened over steel deck Install Versico 725 TR Vapor Retarder after applying CCW Cav-Grip Primer (Top Layer Above Vapor Retarder) Single or Multiple Layers of Min. 1-1/2 Thick Polyiso (3) or Min. 1-1/2 Thick Polyiso (3) overlaid with 1/2 Thick Versico Recovery Board, min. 1/4 Dens- Deck Prime or 7/16 OSB set in DASH/FAST Adhesive over Versico 725 TR Vapor Retarder (4) 3/4 (over Polyiso) 1" (over Versico Recovery Board or OSB 1-1/2" over Dens-Deck Prime New Construction or Structural Concrete Utilizing Versico 725TR Vapor Retarder/702 LV or Cav-Grip Primer Secured with FAST 100 or 100-LV (5) Adhesive; Membrane adhered with Aqua Base 120 Bonding Adhesive FM Thickness Rating VersiGard White Min. 1 thick Polyiso (3) set in DASH/FAST Adhesive over Versico 725 TR Vapor Retarder (4) 1A-945 3/4" Min. 1/4 Dens-Deck/ Dens-Deck Prime or 7/16 OSB over min. 1 Polyiso (3) set in DASH/FAST Adhesive over Versico 725 TR Vapor Retarder 1A /2" (over Dens-Deck) 1" (over OSB) 1/2 Versico Recovery Board over Minimum 1 Polyiso (3) set in DASH/FAST Adhesive over Versico 725 TR Vapor Retarder (4) 1A-660 1" (1) Testing conducted on Minimum 22 gauge Grade E steel decking meeting ASTM A611 or A653 Grade 80 (2) Minimum 1/2 thick Georgia Pacific Dens-Deck Prime base layer must be mechanically fastened at the minimum rate of 1 per 2 square feet in the field of the roof. Additional insulation fastening is required at perimeters and corners in accordance with FM Loss prevention Data Sheets 1-28 and (3) Approved Polyisocyanurate insulation includes those listed on page 5 in this Code Approval Guide. Attach insulation to the Versico 725 Vapor Retarder with DASH/FAST Adhesive as outlined in Versico s Specifications. (4) Prior to installing Versico 725 Vapor Retarder, apply Versico 702 Primer as outlined in Versico s Specification. 10 Aqua Base 120 Codes - 2/2012

12 VersiFleece Adhered Roofing Systems Membrane adhered with Aquabase 120 Bonding Adhesive VersiFleece TPO 100, 115 or 135 Membrane (white, tan or gray) FM Class 1A-300 Rating - Attachment with Hot Asphalt (1) New Construction/ Structural Concrete Thickness Versico Polyiso MP-H 1-12 Versico Recovery Board Versico Recovery Board or Dens-Deck Prime over Polyiso 1/2 Min. 1/2 Min/ See above Bonding Adhesive Aqua Base 120 3/4" 1 with top layer of Versico Recovery board 1-1/2 with top layer of Dens-Deck Prime (2) New Construction or Steel (Min. 22 gauge) Wood (3) Tectum (4) Gypsum (5) (Tearoff Only) FM Class 1A-90 Ratings Base Layer Mechanically Fastened; Top Layer of Attached with Hot Asphalt (1) Base layer of 1/2 thick Dens-Deck/Dens- Deck Prime (6) or FM approved Polyisocyanurate insulation (minimum thickness listed above) mechanically fastened to the deck per standard FM Class 1-90 requirements (including enhancements at perimeters and corners). 1 with top layer of Versico Recovery Board 3/4 with top layer of Polyiso Top Layer of minimum 1/2 thick Versico Recovery Board, Dens-Deck Prime or FM Approved Polyisocyanurate (listed above) secured over base layer with hot asphalt 1-1/2" with top layer Dens-Deck Prime (1) Hot asphalt must be Type III or IV applied at a temperature within 25 F of EVT at the rate of pounds per square. (2) Specific information concerning structural deck requirements (brand names, span capacity, securement criteria, etc.) must be referenced in the current FM Approval Guide and FM Loss Prevention Data Sheet (3) On FM approved wood decks, minimum 1/4" thick gypsum board must be installed beneath the insulations listed. (4) FM approved Tectum decks must be minimum 2" thick. Fasteners must penetrate the deck a minimum 2". (5) Existing gypsum decks must be FM approved. fasteners must penetrate the deck a minimum of 1-1/2". (6) 1/2 thick Dens-Deck or Dens-Deck Prime must be fastened to the deck at 1 per 2 square feet (enhancements required at perimeters and corners). 11 Aqua Base 120 Codes - 2/2012

13 Design A Fully Adhered Roofing Systems VersiFleece 100, 115 or 135 Membrane (white, tan or gray TPO) FM Class 1A-300 Rating Attachment to Structural Concrete with OlyBond500 BA Adhesive (1) Thickness New Construction/ Structural Concrete Versico Polyiso MP-H /4" Versico Dens-Deck Prime Min. 1/4 / Over Polyisocyanurate See Above 1-1/2 FM Class 1A-555 Ratings Attachment to Structural Concrete with OlyBond500 BA Adhesive (1) Thickness New Construction/ Structural Concrete Versico Dens-Deck Prime/XPS (2) Min. 1/4 / 1-1/2 FM Class 1A-240 Ratings Attachment to Structural Concrete with OlyBond500 BA Adhesive (1) Thickness New Construction/ Structural Concrete Versico Recovery Board 1/2 Min. 1/2 Versico Recovery Board over: Polyisocyanurate See Page 12 XPS (2) EPS * Versico Dens-Deck Min. 1/4 / 1-1/2" Prime/EPS * * EPS must be FM approved and manufactured from Western Insulfoam or Western EPS (Min. 2 thick). 1) OlyBond500 BA Adhesive is applied in continuous 3/4 wide beads spaced a maximum of 12 on center to the substrate in the field of the roof. is placed into adhesive after it is allowed to rise and string prior to walking and rolling the board into place. Reference Versico s Technical Data Bulletin (TDB) for installation requirements. 2) Extruded Polystyrene must be Owens Corning Foamular (Min. 2 thick) Aqua Base 120 Codes - 2/2012

14 Design A Adhered Roofing Systems VersiFleece TPO 100, 115 or 135 Membrane (white, tan or gray) FM Class 1A-90 Rating Attachment to Tectum or Gypsum with OlyBond500 BA Adhesive (1) New Construction/ Tectum (2) (2 min. deck thickness) Gypsum (4) Thickness VersiGard VersiGard White Versico Polyiso MP-H /4" 3/4" 3/4" Versico Recovery Board 1/2 Min. 1 with top layer 1 with top layer of Versico of Versico Recovery Board Recovery Board Min. 1/2 Versico Recovery Board or Min. 1/4 Versico Dens-Deck Prime Over: Polyisocyanurate XPS(3) EPS* See Above 1-1/2" with top layer Dens-Deck Prime 1 with top layer of Versico Recovery Board or Dens-Deck Prime 1-1/2" with top layer Dens-Deck Prime * EPS must be FM approved and manufactured from Western Insulfoam or Western EPS (Min. 2 thick). (1) OlyBond500 BA Adhesive is applied in continuous 1/2 wide beads spaced a maximum of 12 on center to the substrate in the field of the roof. is placed into adhesive after it is allowed to rise and string prior to walking and rolling the board into place. Reference Versico s Technical Data Bulletin (TDB) for installation requirements. (2) FM approved minimum 2 thick by 31 wide Tectum deck secured to minimum 1/4 thick steel supports spaced a maximum of 3 on center with two Construction Fasteners, Inc. 2 diameter metal plates and #14 Dekfast Fasteners per panel per support. Screws are driven into 7/32 diameter pilot holes and are spaced 7-1/2 from panel edges. Additional deck fastening required at perimeters and corners per FM Loss Prevention Data Sheet (3) Extruded Polystyrene must be Owens Corning Foamular (Min. 2 thick). (4) Existing Gypsum deck must be. 13 Aqua Base 120 Codes - 2/2012

15 Design A Adhered Roofing Systems VersiFleece TPO 100, 115 or 135 Membrane (white, tan or gray) FM Class 1A-90 Ratings Base Layer Mechanically Fastened; Top Layer of Attached with OlyBond500 BA Adhesive (1)(2) (2) New Construction or Steel (Min. 22 gauge) Wood (3) Tectum (4) Gypsum (5) (Tearoff Only) Base layer of 1/2 thick Dens-Deck/Dens-Deck Prime (6) or FM approved Polyisocyanurate insulation (minimum thickness listed above) mechanically fastened to the deck per standard FM Class 1-90 requirements (including enhancements at perimeters and corners). Top Layer of minimum 1/2 thick Versico Recovery Board or 1/4 thick Dens-Deck Prime Polyiso-cyanurate (See Page 12) secured over base layer with OlyBond500 BA Adhesive 1 with top layer of Versico Recovery Board 1-1/2" with top layer of Dens-Deck Prime 3/4 with top layer of Polyiso (1) OlyBond500 BA Adhesive shall be applied in accordance with Versico Specifications. (2) Specific information concerning structural deck requirements (brand names, span capacity, securement criteria, etc.) must be referenced in the current FM Approval Guide and FM Loss Prevention Data Sheet (3) On FM approved wood decks, minimum 1/4" thick gypsum board must be installed beneath the insulations listed. (4) FM approved Tectum decks must be minimum 2" thick. Fasteners must penetrate the deck a minimum 2". (5) Existing gypsum decks must be FM approved. fasteners must penetrate the deck a minimum of 1-1/2". (6) 1/2 thick Dens-Deck or Dens-Deck Prime must be fastened to the deck at 1 per 2 square feet (enhancements required at perimeters and corners) Versico Versico, and VersiFleece are Trademarks of Versico 14 Aqua Base 120 Codes - 2/2012