specs

Section 07535
Page 3
B. Membrane system shall be one of the approved manufacturers fully adhered roofing systems using a reinforced
72 mil (min.), white colored membrane, highly reflective with 20 year “overburden” warranty.
2.03 MATERIALS
A. Roof System Components shall be equal to the following components:
1. Roofing Membrane - A prefabricated fully adhered installation meeting FM I-90 requirements, highly
reflective white single-ply reinforced, 72 mils thick (minimum). Follow Manufacturer’s physical
specifications and minimum performance criteria, as well as regional wind load requirements. Minimum
Solar Reflective Index (SRI) value of 78, or better than.
2. Membrane components: including pipe and curb flashings must be factory prefabricated from the same
fabric reinforced material used for the deck membrane.
3. Termination Sealant: Compatible with materials to which membrane is to be bonded, conforming to
Federal Specifications TT-598 and TT-S-00230C as furnished by manufacturer.
4. Distribution Plates: Factory Mutual approved stress distribution plates formed from a minimum 24
gauge G-90 CQ steel with a galvalume coating, or high strength polyblend.
5. Water Cut-Off Mastic: Compatible with materials with which it is used and furnished by the membrane
manufacturer.
6. Night Seal: Compatible with materials on which it is used.
7. Pitch Pocket Sealant: A single component, self-leveling sealant furnished by membrane manufacturer.
8. Fasteners: To meet FM I 90 requirements with roof deck as furnished by the membrane manufacturer
9. OMITTED
10. Terminations/Edge Details: Manufactured from rigid exterior vinyl with slotted holes for securement
and furnished by membrane manufacturer. Other terminations/edge details must be approved and
warranted by membrane manufacturer.
B. Roof Deck Insulation: Roof insulation shall be R-38 value rigid polyisocyanurate insulation core bonded to
glass fiber mat on both sides, approved by U.L. and roofing manufacturer, and meeting FM-I90 requirements.
Submit evidence of roofing manufacturer approval to Architect prior to installation. Provide tapered insulation
(identical to rigid insulation used) at counterslope, as indicated on drawings.
C. Related Materials:
Nailers:
1. Wood Nailers shall be pressure treated for rot resistance, #2 or better lumber.
2. Nailer height to match total thickness of insulation.
3. Nailer shall be firmly fastened to the deck @ 16" o.c., so as to resist a force of 200 lbs. per lineal foot in
any direction.
D. Roof Accessories:
1. Roof Hatch: Type "S-20" roof hatch, 2'-6" x 3'-0" as manufactured by Bilco Company, New Haven, CT.
06505. NO SUBSTITUTIONS
a. Hatch shall be complete with hinges, springs, handle, hold-open, draft seal, padlock hasp and exterior
skirting.
b. Provide access ladder as specified in Section 05500-Miscellaneous metals.
2. Ladder Extender: Provide Ladder Up Safety post model LU-2 as manufactured by The Bilco Company.
NO SUBSTITUTIONS.
a. Install on fixed ladder below hatch cover in accordance with manufacturer’s instructions.
3. Roof Walkways: Provide and install manufacturers approved roof walkway pads at locations shown on the
drawings, and where traffic will be concentrated (i.e. access doors, roof hatches, ladders, etc.) whether
shown or not.
PART 3 - EXECUTION
3.01 ACCEPTANCE OF SURFACES
A. Installation of roofing materials shall not be started until other trades have completed the installation and
testing of materials or systems which will penetrate the roof surface, requisite blocking is in place, and the
surface of the respective roof deck is dry.
B. Roof deck surface shall be smooth, level, and free of moisture or frost. Sharp ridges or other projections above
the surface shall be removed prior to membrane application.
NAPA CENTURY CENTER XD 12
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