Specification

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) or higher.
1. Cut membrane to length.
2. Locate and pull Ripcord, splitting release liner.
Place membrane in position.
3. Remove half of the release liner, exposing part of
the membrane.
4. Press the exposed portion of the membrane into
place with heavy hand pressure, smoothing outward
toward the edge.
5. Remove remaining portion of the release liner and
press remaining membrane into place, using the
same procedure. The remaining portion of release
liner may be left in place to allow for future tie-ins.
Refer to the Grace Ice & Water Shield Contractor’s
Guide or the web site (www.graceconstruction.com)
for specific detail drawings.
Consistent with good roofing practice, install the
membrane such that all laps shed water. Always work
from the low point to the high point of the roof.
Precaution & Limitations
• Slippery when wet or covered by frost.
• Consistent with good roofing practice, always wear
fall protection when working on a roof deck.
• Release liners are slippery. Remove from work area
immediately after membrane application.
• Do not leave permanently exposed to sunlight.
Cover within 30 days.
• Do not fold over the roof edge unless the edge is
protected by a drip edge, gutter or other flashing
material.
• Do not install on chamfered edges of wood plank.
S
eals around nails or fasteners. Fully adheres to
d
ecks, resisting leaks from wind-driven rain or
water backup due to ice dams.
Roof shingles
G
race Roof
D
etail Membrane
R
ubberized asphalt
seals around nail
Total adhesion
t
o wood deck
• When lapping over granular, allow for 6 in. overlap
and apply bead of roofing mastic along the edge of
t
he Grace Roof Detail Membrane.
• Repair holes, fishmouths, tears and damage with a
round patch of membrane, extending past the
damaged area 6 in. (150 mm) in all directions.
If fasteners are removed leaving holes in the
membrane, it must be patched. The membrane may
not self-seal open fastener penetrations.
• Do not install fasteners through the membrane over
unsupported membrane areas of the structural deck,
such as over the joints between adjacent structural
panels.
• Due to its slight asphaltic odor, do not apply where
membrane is exposed to interior living spaces. Refer
to product literature for more complete information.
• Not compatible with EPDM or TPO; use Grace Ultra
for tie-ins (refer to Technical Letter 5, Chemical
Compatibility).
• Not compatible with polysulfides, uncured neoprene,
wood substrates with high concentrations of resin
(pitch), or flexible PVC. Grace Roof Detail
Membrane is generally compatible with window and
skylight flanges; for more information, refer to Tech-
nical Letter 5.
• Do not use in the desert southwest U.S.
• Do not use under copper, Cor-Ten
®
or zinc metal
roofs in high altitudes.
• A minimum of 36 in. is recommended at the eaves,
where ice dams may form. Grace recommends Grace
Ice & Water Shield for this application. Grace Roof
Detail Membrane may be used in conjunction with a
self-adhered underlayment to extend ice dam protec-
tion at the eaves.
Code Compliance
Grace Roof Detail Membrane meets the following
standards:
• Underwriters Laboratories Inc. Class A fire classifi-
cation under fiber-glass shingles and Class C under
organic felt shingles (per ASTM E108/UL 790)
• International Conference of Building Officials
(ICBO-ES) Report No. 3997
• Southern Building Code Congress International
(SBCCI PST & ESI) Report No. 94133C
• Building Officials and Code Administrators
(BOCA-ES) Evaluation Report No. 94-33
• Miami-Dade County NOA 02-1113.02
• City of Los Angeles RR 25330