period shall be approved, as required, and accomplished in a manner so as
to restore the integrity of the roof system assembly and validity of the
roof membrane manufacturer warranty for the remainder of the manufacturer
warranty period.
1.10
CONFORMANCE AND COMPATIBILITY
The entire roofing and flashing system shall be in accordance with
specified and indicated requirements, including fire and wind resistance
requirements. Work not specifically addressed and any deviation from
specified requirements shall be in general accordance with recommendations
of the NRCA Roofing and Waterproofing Manual, membrane manufacturer
published recommendations and details, and compatible with surrounding
components and construction. Any deviation from specified or indicated
requirements shall be submitted to the Contracting Officer for approval
prior to installation.
PART 2
PRODUCTS
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NOTE: Edit the materials specification requirements
as necessary for the system(s) specified in PART 1 -
DESCRIPTION OF ROOF MEMBRANE SYSTEM.
See the Note in PART 1 - DESCRIPTION OF ROOF
MEMBRANE SYSTEM for useful information in editing
the membrane materials requirements.
Include bracketed requirements only as applicable to
the system being specified (e.g., torch applied
systems may not require asphalt in the installation;
granule surfaced cap sheets do not require gravel or
coating surfacing).
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2.1
MODIFIED BITUMEN SHEETS AND FIBERGLASS FELT MATERIALS
Furnish a combination of specified materials that comprise the modified
bitumen manufacturer's standard system of the number and type of plies
specified. Materials provided shall be suitable for the service and
climatic conditions of the installation. Modified bitumen sheets shall be
watertight and visually free of pinholes, particles of foreign matter,
undispersed raw material, factory splices, or other conditions that might
affect serviceability. Polymer modifier shall be uniformly dispersed
throughout the sheet. Edges of sheet shall be straight and flat.
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NOTE: Select the base sheet option required and
delete other base sheet options. Base sheets under
insulation should be specified in the insulation
specification section.
Modified bitumen base sheet shall be specified for
two-ply membrane systems and may be incorporated in
three-ply membrane systems.
Perforated venting base sheet option should only be
specified for application directly on concrete deck.
SECTION 07550
Page 16
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