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FM APPROVAL GUIDE
Fields Co LLC 2240 Taylor Way Tacoma WA 98421
Roof Cover: Glass Felt BURs
Insulations: FC2S Iso Hot
Decks: Steel, Wood, Gypsum (reroof), Cementitious Wood Fiber, Concrete
(where shown)
Construction #1: Min 1.5 in. (38 mm) FC2S Iso Hot is loose laid
on the deck. Min 0.75 in. (38 mm) thick Celotherm, ConPerl, GAFTEMP Permalite,
Permalite, Fesco Board or min 1 in. (25 mm) thick Armor Board Regular,
Esgard, Celotex Fiberboard, GAFTEMP Fiberboard, Huebert Fiberboard, Kop-R
Wood Fiber is placed with all joints staggered and mechanically fastened
through the isocyanurate insulation to the deck. For deck types, fasteners,
fastener densities and wind ratings, see individual cover board listings
in the Insulation and Fastener Tables for Approved Glass and Organic Felt
Built Up Roofs. May also be used with Organic Felt BUR covers. Meets 1-60/1-90
per insulation securement.
Construction #1a: Min 1.3 in (32 mm) thick FC2S Iso Hot is loose laid
over a min 22 ga. steel or structural concrete deck. Min 3ž4 in. (19 mm)
thick Celotherm, ConPerl, GAFTEMP Permalite or Fesco Board is placed over
the insulation and mechanically fastened to the deck. For deck types,
fasteners, fastener densities and wind ratings, see the individual cover
board listings in the Insulation and Fastener Tables for Approved Glass
and Organic Felt Built Up Roofs. May also be used with Organic Felt BUR
covers and specific modified bitumen membranes. Meets Class 1-60/1-90
per insulation securement.
Construction #2: Min 1 in. (25 mm) FC2S Iso Hot is loose laid on
the deck. Min 0.75 in. (38 mm) thick Celotherm, ConPerl, GAFTEMP Permalite,
Permalite, Fesco Board is placed with all joints staggered and mechanically
fastened through the isocyanurate insulation to the deck. For deck types,
fasteners, fastener densities and wind ratings, see individual cover board
listings in the Insulation and Fastener Tables for Approved Glass and
Organic Felt Built Up Roofs. May also be used with Organic Felt BUR covers.
Meets 1-60/1-90 per insulation securement.
Construction #3: Concrete. Same as Construction #1 except that
the cover board is optional. When the cover board is not provided, see
the Insulation and Fastener Tables for Approved Glass and Organic Felt
Built Up Roofs. May also be used with Organic Felt BUR covers. Meets 1-60/1-90
per insulation securement.
Construction #4: Min 1.3 in. (32 mm) FC2S Iso Hot is mechanically
secured to the deck with fasteners applied at 4 ft2 (0.4 m2) max contributory
area per fastener. Min 0.75 in. (38 mm) thick Celotherm, ConPerl, GAFTEMP
Permalite or Fesco Board is secured to the insulation with hot asphalt
(all joints staggered). For deck types and fasteners, see individual insulation
listing in the Insulation and Fastener Tables for Approved Glass Felt
and Organic Felt Built-Up Roofs. May also be used with Organic Felt BUR
covers. Meets Class 1-90.
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