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USACE / NAVFAC / AFCESA
UFGS-07570 (May 2004)
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Preparing Activity: NAVFAC
Superseding
UFGS-07570A (November 2001)
UFGS-07571N (September 1999)
UFGS-07572N (September 1999)
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated 23 June 2005
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SECTION 07570
SPRAYED POLYURETHANE FOAM (SPF) ROOFING
05/04
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NOTE: This guide specification covers the
requirements for spray applied urethane foam roofing
systems with a fluid applied elastomeric protection
coating.
Comments and suggestions on this guide specification
are welcome and should be directed to the technical
proponent of the specification. A listing of
technical proponents, including their organization
designation and telephone number, is on the Internet.
Recommended changes to a UFGS should be submitted as
a Criteria Change Request (CCR).
Use of electronic communication is encouraged.
Brackets are used in the text to indicate designer
choices or locations where text must be supplied by
the designer.
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NOTE: Roof must be sloped to drain, with minimum
slope after deflection of 20 mm per meter (1/4 inch
per foot). Roof slope will be obtained by sloping
the structural deck and not by varying the thickness
of the sprayed insulation. The roofing system will
not be applied when deck is of lightweight concrete
or when other than light foot traffic is anticipated
on the roof. Broomed finish should be specified for
concrete decks.
The designer will determine the minimum required
R-value and calculate the insulation thickness based
on the aged R-value of 5.6. Insulation thickness
shall be specified or indicated on drawings but not
be less than 38 mm (1-1/2 inches) and will be shown
on the drawings.
SECTION 07570
Page 4
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