Specification

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 split release on demand 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 housewrap/ weather resistive barrier is installed.
®
gcpat.com | North America customer service: 1-866-333-3726gcpat.com | North America customer service: 1-866-333-3726
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 consideration, investigation and verification by the user, but we do not warrant the results to be obtained. Please read all
statements, recommendations, and 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 that would infringe any patent, copyright, or other third party
right.
Vycor® , Vycor enV® , and Perm-A-Barrier® are trademarks, which may be registered in the United States and/or other countries, of
GCP Applied Technologies Inc. This trademark list has been compiled using available published information as of the publication date
and may not accurately reflect current trademark ownership or status.
© Copyright 2018 GCP Applied Technologies Inc. All rights reserved.
GCP Applied Technologies Inc., 62 Whittemore Avenue, Cambridge, MA 02140 USA.
In Canada, GCP Canada, Inc., 294 Clements Road, West, Ajax, Ontario, Canada L1S 3C6
This document is only current as of the last updated date stated below and is valid only for use in the United States. It is important
that you always refer to the currently available information at the URL below to provide the most current product information at the
time of use. Additional literature such as Contractor Manuals, Technical Bulletins, Detail Drawings and detailing recommendations
and other relevant documents are also available on www.gcpat.com. Information found on other websites must not be relied upon, as
they may not be up-to-date or applicable to the conditions in your location and we do not accept any responsibility for their content.
If there are any conflicts or if you need more information, please contact GCP Customer Service.
Last Updated: 2018-08-24
gcpat.com/solutions/products/vycor-weather-barrier-flashing-tapes/vycor-plusgcpat.com/solutions/products/vycor-weather-barrier-flashing-tapes/vycor-plus
Product Data Sheets
Page 5 of 5