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7550 Guide Specifications:
Modified Bitumen/Cap Sheet Roof System
D. Flexible Flashings
1. Sheet Flashing: Modified bitumen; DynaFlex
manufactured by JM. Flashing specifications as
listed in the current JM Commercial/Industrial
Roofing Systems Manual.
E. Cants
1. Perlite Cant and Tapered Edge Strips: FesCant
Plus Perlite Board, flame resistant, preformed to
45 degree (0.79 rad.) angle supplied by JM;
Tapered Fesco Edge Strip.
F. Accessories
1. Roofing Nails: Galvanized or non-ferrous type,
length as required to suit application.
2. Traffic Pads: JM DynaTred.
3. Premium No. 12 hexhead fastener coated for
superior corrosion resistance. JM UltraFast with
UltraFast Locking Plastic Plates
or UltraFast Galvalume Metal Plates.
4. Prefabricated Expansion Joint Covers: EPDM
sheet attached to sheet metal flanges with a
bifurcated crimp, with a closed cell polyethylene
foam backer; Expand-O-Flash.
5. Roof Drains: Drain having an integral flexible
Neoprene bellows and the drain body composed of
PPO engineering resin. Drain capable of
accommodating 1" (25 mm) movement in all
directions; JM Flex-I-Drain.
6. [Roof Vents: Molded polyethylene body with
one-way silicone rubber valve; JM FP-10 One Way
Roof Vent.]
7. [Roof Fascia: Factory-made fascia system,
consisting of [.050 inch (1.3 mm) aluminum] [24 ga.
(0.6 mm) galvanized steel] cover plate, waterdam,
and concealed cover plate; JM Presto Lock].
III. PRODUCTS
A. Examination
1. Verify that surfaces and site
conditions are ready to receive work.
2. Verify that deck is supported and
secured.
3. Verify that deck is clean and smooth,
free of depressions, irregularities, or
projections, properly sloped to drains,
valleys or eaves.
4. [Verify that adjacent pre-cast
concrete roof members do not vary
more than 1/4 inch (6 mm) in height].
5. Verify that deck surfaces are dry and
free of dirt and debris.
6. Verify that roof openings, curbs,
pipes, sleeves, ducts, and vents through
roof are solidly set, and reglets [Wood
cant strips] [Wood nailing strips] are in
place.
7. Start of work means installer accepts
existing substrate.
B. Protection
1. Protect building surfaces against damage from
roofing work.
C. Preparation – Wood Deck
1. Verify flatness and joint openings of
wood decking. [Fill knot holes with latex
filler.] [Cover holes with sheet metal.] [
OR ]
D. Preparation – Concrete Deck
1. Fill surface honeycomb and
variations with latex filler.
2. Prime entire surface with concrete
primer at the rate of 1 gal per 100
square feet (0.41 liters/m2).
* * * * or * * * *
E. Preparation – Metal Deck
1. [Install preformed sound absorbing
glass fiber insulation strips supplied by
Section 05311 in acoustic deck flutes.
Install in accordance with
manufacturer’s instructions.]
2. Verify that all units are properly
secured in place.
