Installation Guide

PRECAUTIONS
AND LIMITATIONS
Precautions and Limitations
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Some solvents in certain caulking may be incompatible with
the adhesive in Grace Vycor Self-Adhered Flashings. Refer to
Technical Letter 1, “Chemical Compatibility with Other Building
Materials and Sealants,” page 51.
If fasteners are removed, leaving holes in the membrane, it
must be patched with another piece of membrane.
Consistent with good construction practices, install the
membrane such that all laps shed water (following the
shingle principle). The top membrane layer should go over
the bottom layer. Always work from the low point to the
high point.
Apply Grace Vycor Self-Adhered Flashings only in fair
weather when the air, surface and membrane are at
temperatures of -4°C (25°F) or higher.
SAFETY, STORAGE AND HANDLING
Grace Vycor Self-Adhered Flashing and accessory products
must be handled properly. Read all product labels and
Material Safety Data Sheets (MSDS) – see our web site at
www.graceconstruction.com for proper handling and
disposal. Deliver all materials in manufacturer's unopened
packages and store all materials under cover. Do not double
stack palletized material.
Grace Vycor Self-Adhered Flashings are designed for
critical non-roof flashing details. DO NOT install
on the roof.
Grace Vycor Plus and Grace Vycor V40 are slippery –
DO NOT walk on their surface. The surface of Grace
Vycor Deck Protector, although treated with a skid-resis-
tant coating, could also be slippery. Use special care and
take all necessary fall protection precautions when walk-
ing on the membrane.
Release liners are slippery. Remove from work area
immediately after membrane application.
Do not leave Grace Vycor Self-Adhered Flashings perma-
nently exposed to direct sunlight. Maximum
recommended exposure time is 30 days.
Due to its slight asphaltic odor, DO NOT apply this
product where the membrane is exposed to interior
living space.
Grace Vycor Self-Adhered Flashings should not be used in
hot desert areas in the Southwestern United States.
Grace Vycor Self-Adhered Flashings are not compatible
with plasticized polyvinyl chloride (flexible PVC). Certain
metal window applications with integral nail fin may
have specific limitations. Contact window manufacturer
for specific application instructions required when using
a bituminous-based flashing.