Installation Guide

Product Data
Property Grace Vycor Plus
Product thickness 25 mil (0.64 mm)
Carrier film Cross-laminated HDPE
Adhesive Rubberized asphalt
Release liner Paper
Color Black-Gray
Recommended 30 Days
exposure limit
Roll width(s) 4 in. (100 mm) 6 in. (150 mm) 9 in. (225 mm) 12 in. (300 mm) 18 in. (450 mm)
Roll length(s) 75 ft (22.9 m) 75 ft (22.9 m) 75 ft (22.9 m) 75 ft (22.9 m) 75 ft (22.9 m)
Rolls per carton 18 12 662
Shipping weight 74 lbs (33 kg) 74 lbs (33 kg) 56 lbs (25 kg) 74 lbs (33 kg) 36 lbs (16 kg)
Cartons per pallet 30 30 30 30 35
Priming is generally not required for most
substrates provided they are clean and dry.
However, on concrete, masonry and
DensGlass Gold
®
, apply Perm-A-Barrier
®
WB
Primer. If adhesion is found to be marginal,
prime wood composition and gypsum sheath-
ing also with Perm-A-Barrier WB Primer. The
coverage rate for Perm-A-Barrier WB Primer
is 250–350 ft
2
/gal (6–8 m
2
/L). Allow primer
to dry completely, approximately 1 hour
depending on weather conditions, before
application of flashing.
Membrane Installation
Using the 6 in. (150 mm) and 12 in. (300 mm)
measurement markings, cut the membrane to
the desired length. Peel back the release paper
to expose the adhesive. Align the membrane
and press into place with heavy hand pressure.
Laps must be a minimum of 3 in. (75 mm).
Mechanically fasten the membrane at all
vertical terminations. Use only smooth shank
fasteners.
Consistent with good construction practice,
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. When needed, use
Ripcord to split the release paper and adhere
half of the membrane, while leaving the other
half with the paper on. This is required when
flashing a window sill before the house-
wrap/weather resistive barrier is installed.
Precautions & Limitations
Grace Vycor Plus is designed for critical
NON-ROOF flashing details. The membrane
is slippery—DO NOT install on the roof; DO
NOT walk on the membrane.
Do not leave the product permanently
exposed to sunlight. Maximum recommended
exposure time is 30 days. Due to its slight
asphaltic odor, apply this product where the
membrane is not exposed to interior living
space. Grace Vycor Plus should not be used in
hot desert areas in the southwestern
United States.
Grace Vycor Plus is not compatible with flex-
ible PVC. Contact window manufacturer for
specific application instructions required
when using a bituminous-based flashing.
Certain metal window applications with inte-
gral nail fin may have specific limitations.
Some solvents in certain caulking may be
incompatible with the adhesive in Grace
Vycor Plus.
For more information, check with your local
Grace representative.
Approvals
ICBO approved as a Flashing Material
(Report ER-6141).