SPRAY POLYURETHANE FOAM ALLIANCE (SPFA)
SPFA AY-104
(1994; R 2000) Spray Polyurethane Foam
Systems for New and Remedial Roofing
THE SOCIETY FOR PROTECTIVE COATINGS (SSPC)
SSPC SP 6
(2000) Commercial Blast Cleaning
UNDERWRITERS LABORATORIES (UL)
UL 1256
(2002) Fire Test of Roof Deck Constructions
UL 790
(2004) Test Methods for Fire Tests of Roof
Coverings
UL Bld Mat Dir
(2004) Building Materials Directory
1.2
DESCRIPTION OF ROOF SYSTEM
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NOTE: Granules will be used only where appearance
of roof is important and for walkways.
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The roofing system shall consist of sprayed in-place polyurethane foam roof
insulation covered with a waterproof elastomeric protective coating[ and
surfaced with ceramic granules[ in areas indicated]].
1.2.1
1.2.1.1
Fire and Wind Uplift
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NOTE: Roofing over a metal deck must have either a
UL 1256 classification or an FM Class I listing in
addition to UL 790. Specify UL 790 Class A fire
rating for all applications of less than 1:4 slope.
Slope greater than 1:4 may require Class B rating
based on flame spread on steeper slope.
Factory Mutual (FM) 1-90 wind uplift is the minimum
recommendation for all spray foam roofing applied
directly to deck substrates. The wind rating of
sprayed foam applied to an existing roof system is
typically the same as the rating of the existing
roof system.
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[The complete roof system shall have a[ UL 1256,] UL 790, Class A[ or B]
fire rating, be listed as "fire classified" in UL Bld Mat Dir, and bear the
UL label or be listed as a Class 1 Roof Deck in FM P7825a.][ Roofing system
over steel deck shall be rated Class 1-[90][_____] in accordance with FM
P7825c.] Ratings from other independent laboratories may be substituted
provided that the tests, requirements and ratings are documented to be
equivalent, to the satisfaction of the Contracting Officer.
SECTION 07570
Page 7
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