Installation Guide

Grace Waterproong Systems
Grace Ice & Water Shield
®
Self-adhered underlayment for premium
protection
Grace Ice & Water Shield
®
has been the
premier self-adhesive underlayment product
used in domestic roof protection under
shingles for more than 30 years. It has
performed in the critical areas under the most
severe climatic conditions to protect against
wind driven rain and the effects of ice dam
build up beneath the shingles.
Because of the unique properties of Grace
Ice & Water Shield, these benets are also
applicable in its use under a wide range of
metal roong materials, on low and high
slope designs.
Product Description
Grace Ice & Water Shield membrane is
composed of two waterproong materials
- an aggressive rubberised asphalt adhesive
backed by a layer of high density, cross-
laminated polyethylene. The rubberised
asphalt surface is backed with a release paper
that protects the adhesive quality. During
application, the release paper is removed
allowing the compound to bond tightly to the
plywood deck. The membrane is supplied in
20 metre rolls, 1 metre in width.
Advantages
•Easy to handle and apply
•Foldless release paper
•Seals around nails
•Dual barrier protection
•Membrane will not crack, dry out or rot
•Protects under all standard sloped roof
coverings
•Slip resistant surface
•Proven track record
•Reroofable
•Grace technical support
Features & Benets
• Easytohandleandapply– The self-
adhesive membrane bonds rmly to the roof
deck without heat or special adhesives.
RIPCORD
®
is a unique, patented feature
that makes Grace Ice & Water Shield
easier
to apply by giving the applicator a split
release on demand. Faster application of the
membrane in the straight-aways, as well as
ease of membrane positioning in detailed
areas (valleys, around dormers, etc.), are
just some of the benets.
• Foldlessreleasepaper– The foldless
release paper provides multiple
performance enhancements: fewer edge
catches, 180° pull-back, ease of membrane
cutting (single cuts) and membrane
positioning, quicker “one-man installs”
resulting in an easier, more productive
release.
• Sealsaroundnails– The rubberised
asphalt layer in Grace Ice & Water Shield
seals around roong nails, resisting leakage
caused by water back-up behind ice dams,
or from wind-driven rain.
• Dualbarrierprotection– Rubberised
asphalt and polyethylene are combined to
form two waterproong barriers providing
maximum protection.
• Membranewillnotcrack,dryoutorrot
– Grace Ice & Water Shield resists attacks
from fungus and bacteria; maintains its
integrity for long lasting protection.