Full Product Manual

Grace Construction Products
GRACE ULTRA
™
Self-adhered roong underlayment for
the highest temperature applications
Product Description
Grace Ultra
™
roong underlayment is composed of two water-
proong materials—an aggressive butyl rubber based adhesive
backed by a layer of high density cross laminated polyethylene.
The product is 30 mils (0.76 mm) thick making it easy to handle
and apply. The unique, advanced adhesive formulation offers
premium adhesion to the roof deck, high quality laps, superior
seal around roong fasteners, and outstanding high temperature
stability.
The adhesive is backed by a protective plastic release liner that
protects its adhesive quality. The release liner is easily removed
allowing the adhesive to be bonded tightly to the roof deck.
The membrane comes in a 198 ft
2
(18.4 m
2
) roll, and measures 34
in. (864 mm) wide.
Features & Benets
Easy to handle and apply—The membrane bonds rmly to the
roof deck and forms high quality laps.
Self sealing—The membrane meets key building code standards
for nail sealability of self-adhered roong underlayments.
Heat resistance—The membrane is specially formulated to resist
temperatures up to 300°F without degradation of the butyl adhe-
sive.
Better Chemical Resistance— Compatible with low slope
roong materials such as EPDM and TPO
Slip resistant surface—The slip resistant surface maximizes
traction for safety without compromising the water integrity of
the laps.
Plastic release—Plastic is easy to remove and easy to dispose of.
Reroofable—Unlike some granular surfaced membranes, Grace
Ultra
™
underlayment will not adhere to the underside of the
exposed roof covering making reroong easier and less costly.
Grace expertise—Grace is the recognized leader in self-adhered
roong underlayments and is the manufacturer of Grace Ice &
Water Shield
®
roong underlayment.
Guidelines for Use
Grace Ultra
™
membrane can be used as a sloped roof underlay-
ment to help protect against leakage from water that builds up
behind ice dams, or from wind-driven rain in applications where
the membrane must withstand the highest in-service temperatures
for extended periods of time.
High Temperature Applications
Grace Ultra
™
membrane is the appropriate product for all applica-
tions where superior heat resistance is
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