Full Product Manual

Application
Apply primer in dry weather with ambient and substrate
temperatures above 25°F (-4°C). Surface must be dry and clean.
Surface Preparation
All surfaces must be free from frost, dirt, grease, oil or other
contaminants. Failure to remove excessive dust may result in
compromised adhesion of the membrane.
In cooler or humid conditions, priming may be done in advance.
If primed surface is exposed for more than 7 days, or if
signicant dust or dirt accumulates on the surface, re-prime with
a thin coat of Perm-A-Barrier WB Primer.
Roller Technique
Synthetic,
1
⁄
2
in. (13 mm), nap rollers have been found to be very
successful for the application of Perm-A-Barrier WB Primer. A
moderately thick coating should be applied and rolled out evenly
(see coverage below). A properly applied coating will have
uniform coverage and leave a tacky nish to the surface when
dry.
Coverage
250–350 ft
2
/gal (6.0–8.0 m
2
/L)
Drying Time
To be effective, the Perm-A-Barrier WB Primer needs to fully
dry. Drying time of the material is dependent on many factors
including temperature, humidity, wind, sunlight and coverage
rate. The drying time could vary from as little as 15 min. (warm
and windy) to 3 hours (cold and no wind), depending on the
weather condition. The following are guidelines for dry time at
various temperatures:
• 90°F (32 °C) or greater:
45 min.–1 hr
• 50°F (10°C) to 90°F (32 °C):
1–3 hrs
• Less than 50°F (10°C):
3 hrs +
The product is packaged “ready to use.” Do not use any substance
to thin this product.
www.graceconstruction.com
For technical assistance call toll free at 866-333-3SBM (3726)
Perm-A-Barrier and Vycor are registered trademarks of W. R. Grace & Co.–Conn.
DensGlass Gold is a registered trademark of Georgia-Pacic Corporation.
We hope the information here will be helpful. It is based on data and knowledge considered to be true and accurate
and is offered for the users’ consideration, investigation and verication, but we do not warrant the results to be
obtained. Please read all statements, recommendations or suggestions in conjunction with our conditions of sale,
which apply to all goods supplied by us. No statement, recommendation or suggestion is intended for any use which
would infringe any patent or copyright. W. R. Grace & Co.–Conn., 62 Whittemore Avenue, Cambridge, MA 02140.
In Canada, Grace Canada, Inc., 294 Clements Road, West, Ajax, Ontario, Canada L1S 3C6.
This product may be covered by patents or patents pending. Copyright 2014. W. R. Grace & Co.–Conn.
PAB-020H Printed in U.S.A. 08/14 GCS/PDF
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