Full Product Manual

FULLY-ADHERED UNDERLAYMENT
Features & Benets
Easy to handle and apply—The self-adhesive membrane bonds
rmly to the substrate without heat or special adhesives. Water
cannot seep under the membrane. Watertight seams are easily
formed.
Ripcord
®
split-release on demand is a unique, patented feature
that makes Grace Roof Detail Membrane easy to apply by giving
the applicator a split release on demand. The split release makes
positioning in detail areas easy by minimizing the amount of
adhesive exposed during installation. Both the 9 in. and 18 in.
rolls contain Ripcord
®
split-release on demand placed at the
center and near the edges to simplify application of the membrane
at angled transitions, allowing the applicator to select the amount
of adhesive to be exposed during installation.
Seals around nails—The rubberized asphalt layer in Grace Roof
Detail Membrane seals around roong nails, resisting leakage
caused by water back-up behind ice dams, or from wind-driven
rain.
Membrane will not crack, dry out or rot—Grace Roof Detail
Membrane resists attacks from fungus and bacteria; maintains its
integrity for long lasting protection.
Protects under all standard sloped roof coverings—Grace
Roof Detail Membrane protects under slate, tile, cedar shakes or
metal, as well as under conventional asphalt shingles.
Slip resistant surface—Grace Roof Detail Membrane has a slip
resistant embossed surface to maximize traction and safety for
applicators.
Proven track record—Grace Roof Detail Membrane is based
on Grace Ice & Water Shield
®
underlayment, the name brand in
roong underlayments with over 30 years of protecting roofs
from ice dams and wind-driven rain.
Reroofable—Unlike some granular-surfaced membranes, Grace
Roof Detail Membrane will not adhere to the underside of the
exposed roof covering. Grace Roof Detail Membrane can be
applied over the old Grace underlayment (except over Grace
Basik
®
underlayment) in retrot applications, making reroof-
ing easier, less costly—since there is no need for removing the
existing underlayment—more durable and environmentally
friendly—as the substrate remains intact, avoiding the need to
purchase additional wood substrate.
Inhibits corrosion—Grace Roof Detail Membrane isolates metal
roof components from new corrosive wood preservatives.
Grace technical support—Grace Roof Detail Membrane is backed
by a team of technical support personnel that help ensure every
application goes smoothly.
Guidelines for Use
Roof Details—Grace Roof Detail Membrane is used as a ashing
to provide resistance against water inltration at trouble-prone
roof detail areas such as valleys, drip edges, rake edges, chim-
neys, ridges, skylights, dormer walls and roof-to-wall transitions.
Local building codes should be consulted for specic require-
ments.
Installation Procedure
Surface Preparation
Install Grace Roof Detail Membrane directly on a clean, dry,
continuous structural substrate. Some suitable substrates
are plywood, wood composition, metal, concrete or gypsum
sheathing. For all other substrates, contact your Grace
representative. Remove dust, dirt, loose nails and old
roong materials. Protrusions from the substrate area must
be removed. Substrates shall have no damaged or unsup-
ported areas, or voids. Repair substrate before installing the
membrane.
Priming
Prime concrete, masonry, DensGlass Gold
®
and DensDeck
®
surfaces with Perm-A-Barrier
®
WB Primer. Prime wood
composition and gypsum sheathing with Perm-A-Barrier
®
WB Primer if adhesion is found to be marginal (refer to
Technical Letter 12, Use on Oriented Strand Board (OSB)
Roof Sheathing). Apply Perm-A-Barrier
®
WB Primer at a rate
of 250–350 ft
2
/gal (6–8 m
2
/L). Priming is not required for
other suitable surfaces provided that they are clean and dry.
Grace Roof Detail Membrane Installation with
Ripcord
®
Split Release Feature
Apply Grace Roof Detail Membrane only in fair weather
when the air, substrate and membrane are at temperatures
of 40°F (5°C) or higher. Apply roof and wall covering at
membrane temperatures of 40°F (5°C)
Grace Roof Detail Membrane
Use Grace Roof Detail Membrane on all
critical areas
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