Full Product Manual
• Do not fold over the roof edge unless the edge is protected by a
drip edge, gutter or other ashing material.
• Check with the manufacturer of the metal roong system for
any special requirements when used under metal roong. Do
not install directly under roof coverings especially sensitive to
corrosion, such as zinc, without providing proper ventilation.
• Do not install under copper, Cor-Ten
®
, or zinc metal roong in
high altitudes or in the desert southwest. These roofs can reach
extremely high temperatures due to the low reectivity, high
absorption, and high conductivity of the metals.
• Provide proper roof insulation and ventilation to help reduce
ice dams and to minimize condensation.
www.graceresidential.com
For technical assistance call toll free at 866-333-3SBM (3726)
Grace, Tri-Flex, Grace Ice & Water Shield and Basik are registered trademarks of W. R. Grace & Co.–Conn.
Cor-Ten is a registered trademark assigned to USX Corporation.
This trademark list has been compiled using available published information as of the publication date of this brochure and
may not accurately reect current trademark ownership or status. Grace Construction Products is a business segment of
W. R. Grace & Co.-Conn.
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 verication, 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.
UL-146G Printed in U.S.A. 02/14 GCS/PDF
• Repair holes, shmouths, tears and damage to product. Grace
mechanically-attached underlayment does not self-seal open
fastener penetrations.
• Use nails and staples ONLY with plastic or metal caps.
• Do not install fasteners through the product over unsupported
areas of the structural deck, such as over the joints between
adjacent structural panels.
• Do not stretch Grace membrane during installation. The
product should be pulled taut, but should not be stretched.
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