Full Product Manual

Grace Construction Products
GRACE SELECT
™
Self-adhered roong underlayment
Product Description
Grace Select
™
roong underlayment is composed of two water-
proong materials—a rubberized asphalt adhesive, backed by a
layer of high density cross laminated polyethylene.
The product is 25 mils (0.64 mm) thick making it lightweight
and easy to handle and apply. The unique, advanced rubberized
asphalt formulation allows the membrane to meet industry stan-
dards for fastener sealability equivalent to products that are often
signicantly thicker and heavier.
The rubberized asphalt is backed by a paper release liner that
protects its adhesive quality. The release liner is easily removed
allowing the rubberized asphalt to be bonded to the roof deck.
The membrane comes in a 195 ft
2
(18.1 m
2
) roll, and measures 36
in. (914 mm) wide.
Features & Benets
Easy to handle and apply—The membrane is easy to reposition,
easy to install, bonds to the roof deck and forms high quality laps.
Grace Ripcord
®
Split Release on Demand—The Grace
Ripcord
®
is a nylon string that is embedded between the under-
layment material and the release liner. The Ripcord
®
feature gives
the installer the option of either splitting the release sheet for easy
positioning and installation, or removing the release sheet in one
piece.
Self sealing—The membrane meets key building code standards
for nail sealability of self-adhered roong underlayments.
Lightweight—The 195 ft
2
roll weighs only a fraction of what
competitive materials weigh making transport and handling
easier.
Slip resistant surface—The slip resistant surface maximizes
traction for safety without compromising the water integrity of
the laps. The surface lm is resistant to scufng and tracking oil
in hot weather
Reroofable—Unlike some granular surfaced membranes,
Grace Select
™
membrane 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
®
.
Guidelines for Use
Grace Select
™
membrane can be used as a sloped roof underlay-
ment to resist water penetration due to wind-driven rain and ice
dams. The membrane is designed to meet code based minimum
standards of performance in severe climates.
Wind-Driven Rain
Sloped roofs protect structures by shedding rain water but they
are not waterproof. Storm-driven winds can cause sloped roof
coverings to lift. Rain can be easily driven under the roof cover-
ing directly to the unprotected deck where it causes leaks and
damage to the interior of the structure. Grace Select
™
membrane
that is applied beneath the sloped roof covering prevents
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