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Bitec Inc, 2 Industrial Park Dr, Box 497, Morrilton AR 72110
Approved Combinations and Assemblies
Data from FMRC "Approval Guide" CD, January 2007 Approval Guide


Roof Cover:
SPM-3.5H, SFM-3.5H-FR or SPS-3H
Deck: Steel and Concrete (Recover where indicated)
Coating: Karnak No.97 Coating applied at 11/2 gal/sq (0.65 L/m2), coating is not required when SFM-3, 5H-FR cap sheet is used
Laps: 4 in. (102 mm) wide side and 6 in. (152 mm) wide end laps
Application: Hot asphalt Base Sheet: Perma Ply No.28, Glas Base or GAFGLASS #75
Ply Sheet: Compabase PS-2H, FS-2H, GlasPly IV, Glasply Premier
Hail Rating: Class 1-SH

ASTM E 108:

Noncombustible deck as follows:
SPM-3.5H: Class B, 3/4 in 12 slope
SFM-3.5H-FR: Class B, 11/2 in 12 slope, coating is not required SPS-3H: Class A, 3/4 in 12 slope
With GlasPly IV or Glasply Premier ply sheet(s): Class A, 11/2 in 12 slope.
With PS-2H, FS-2H or FA-2T ply sheet: Class A, 3/4 in 12 slope

Roof Cover:
APS-4T, APM-4T, APM-4.5T or SPM-4.5T
Deck: Steel and Concrete (Recover where indicated)
Coating: Karnak No.97 Coating applied at 11/2 gal/sq (0.65 L/m2)
Laps:
3 in. (76 mm) wide side and 6 in. (152 mm) wide end laps
Application:
Torch adhered Base Sheet: Perma Ply No.28, Glas Base or GAFGLASS #75 Ply Sheet: Compabase PS-2H, FS-2H, FA-2T; GlasPly IV, Glasply Premier
Hail Rating: Class 1-SH

ASTM E 108
:
Noncombustible deck as follows:
SPM-4.5T; Class B, 11/2 in 12 slope APM-4T; APM-4.5T Class B, 11/2 in 12 slope APS-4T: Class A, 11/2 in 12 slope With GlasPly IV or Glasply Premier ply sheet(s): Class A, 11/2 in 12 slope With PS-2H, FS-2H or FA-2T ply sheet: Class A, 3/4 in 12 slope


Construction #1:
Min 1 in. (25 mm) thick Armor Board Regular, Esgard, Celotex Fiberboard, GAFTEMP Fiberboard, Huebert Fiberboard, Kop-R Wood Fiber, ConPerl, GAFTEMP Permalite, Permalite or Fesco Board are secured to the roof deck with fasteners applied at 2 ft2 (0.19 m) max contributory area per fastener. The base sheet is adhered with hot asphalt and roof cover then adhered with joints staggered from base sheet. Karnak No.97 coating is applied as indicated above.

Meets Class 1-60.

Fasteners:
1) Dekfast Stainless Steel with 3 in. Round plate; #12, #14, #15 Dekfast or Omega with Hex Plate, Dekfast Autoset Plate; Dekfast #12 Hex with #12 Hex Plate. 2) AccuTrac or Hextra with Recessed or AccuTrac Plate; #12, 1/4 in., #14-10 or #15 Roofgrip with Recessed or Accutrac Flat Bottom. 3) Olympic #10, Olympic Standard, Olympic Heavy Duty, Stainless #12, Hex Head #12, #14, Iron-Lok or Strap Toggle with Standard or G-2 plate. 4) Rawl #12, #14 or Speed-Lock Toggle Bolt with Rawl 3 in. Insulation Plate.

Construction #2: Min 15/16 in. (24 mm) thick, Standard and Wide Flute Fiberglass Roof Insulation, Standard and Wide Flute Fiber Glass Roof Insulation, Fiber Glass Roof Insulation (Standard and Wide Flute) insulation, is secured to the deck with fasteners and plates applied at a max 3 ft2 (0.28 m2) contributory area per fastener. The fasteners, base sheets, roof cover and coating applied as in Construction #1.

Meets Class 1-90.

Construction #3: Concrete. Deck is primed and covered with an insulation shown in Construction #1 or #2 adhered to the deck with hot asphalt. The base sheet, roof cover and coating applied as in Construction #1.

Meets Class 1-90.

Construction #4: Insulation shown in Construction #1 or #2 is presecured to the deck. The base sheet is then secured to the roof deck with fasteners shown in Construction #1 applied 12 in. (305 mm) on center along the side and end laps and along the centerline of the base sheet.

The roof cover and coating applied as in Construction #1.

Meets Class 1-90.

Construction #5: Min 1.5 in. (40 mm) thick ACFoam-II, Armor R Plus, Kop-R(II), Polyiso HP-W, Thermal Tec, UltraGard ISO II, UltraGard Gold SP or USIso are loose laid over the deck and covered with min 1 in. (25 mm) thick Armor Board Regular, Esgard, Celotex Fiberboard, GAFTEMP Fiberboard, Huebert Fiberboard, Kop-RWood Fiber or min 3/4 in. (19 mm) thick ConPerl, GAFTEMP Permalite, Permalite or Fesco Board placed with all joints staggered, and mechanically fastened through the isocyanurate insulation to the deck with fasteners applied at 2 ft2 (0.19 m2) max contributory area per fastener. Refer to Glass Felt BUR cover table for the particular deck type and min cover board type and thickness shown above for fastening requirements. The base sheet and cap sheet and coating are then applied as in Construction #1. For use with hot asphalt adhered roof covers only.

Meets Class 1-90.

Construction #5a: Min 1.3 in. (32 mm) thick AcFoam-II, AcFoam-III, Armor R Plus, Kop-R(II), Polyiso HP-W, Thermal Tec, HPG ISO II, UltraGard or USIso is loose laid over a min 22 ga steel or structural concrete deck. Min 3/4 in. (19 mm) thick ConPerl, GAFTEMP Permalite or Fesco Board is placed over the insulation with all joints staggered and mechanically fastenered through the insulation to the deck with fasteners applied at 2 ft2 (0.2 m2) max contributory area per fastener. The base sheet, cap sheet and roof coating is then applied as per Construction #1. For use with hot asphalt adhered roof covers only.

Meets Class 1-90.

Construction #6: Min 2 in. (50 mm) thick ACFoam Composite, Kop-R(WC) or USIso/Perlite Composite is secured to the deck with fasteners applied at 4 ft2 (0.37 m2) max contributory area per fastener. Refer to Glass Felt BUR cover table for the particular deck type for fastening requirements. The base sheet and cap sheet and coating are then applied as in Construction #1. For use with hot asphalt adhered roof covers only.

Meets Class 1-90.

Construction #7: Recover. The base sheet is adhered to a smooth surfaced existing BUR cover with hot asphalt. The roof cover and coating applied as in Construction #1.

Meets Class 1-60/1-90 per existing roof.

Construction #8: Recover. Construction #1, #2 or #4 above may be used in recover applications. For recover over steel deck, the max insulation thickness shall be 1 in. (25 mm).

Class 1-60/1-90 per above.

Construction #9: Min 1.3 in. (32 mm) ACFoam-II, Armor R Plus, Polyiso HP-W, GAFTEMP Isotherm-RA, Kop-R (WII), Poly ISO 2, UltraGard, US Iso, UltraGard Iso II are mechanically secured to the deck with fasteners applied at 4 ft2 (0.4 m2) max contributory area per fastener. Min 0.75 in. (19 mm) thick ConPerl, GAFTEMP Permalite, Permalite or Fesco Board is secured to the insulation with hot asphalt (all joints are staggered). For deck types and fasteners, see individual insulation listing in the Insulation and Fastener Tables for Approved Glass and Organic Felt Built Up Roofs. Base and cap sheets are hot mopped to the cover board. For use with hot asphalt adhered roof covers only.

Meets 1-90.

Construction #10: Insulation and cover boards as shown in Construction #5 or #9 are mechanically fastened to the deck with Dekfast, Olympic, Rawl or Buildex fasteners (all metal plates only) at a fastener density of 1 fastener per 2 ft2. The base sheet is then adhered to the top surface of the overboard with hot asphalt. One or two plies of GlasPly IV or Glasply Premier, with joints staggered, is adhered to the base sheet with hot asphalt. The roof cover, with joints staggered, is then adhered to the interply sheet with hot asphalt or torching as appropriate.

Karnak No. 97 Coating is applied as indicated above. Meets Class 1-90.

Construction #10a: Same as Construction #10 except that interply is limited to one ply of Compabase PS-2H, FS-2H or FA-2T, with joints staggered, is adhered to the base sheet with hot asphalt or torching as appropriate.

Meets Class 1-90.

Test Reports

JI 0Q3A3.AM (Class 4470)
JI 0B3A7.AM (Class 4470)
JI 1Z7A0.AM (Class 4470)

FM is a registered trademark of FM Global Technologies LLC

Revised Monday April 20, 2015

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