Specification

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Grace Ice & Water Shield, Grace Tri-Flex 30, Basik, Perm-A-Barrier and Ripcord are registered trademarks and Vycorner is a trademark
of W. R. Grace & Co.–Conn.
Cor-Ten is a registered trademark assigned to USX Corporation.
DensGlass Gold and DensDeck are registered trademarks of Georgia-Pacific 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 verification, 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 2007. W. R. Grace & Co.–Conn.
GIWS-196A Printed in U.S.A. 3/07 FA/LI/1M
Grace Underlayments Product Selection Matrix
Grace
Grace Ice & Water Grace Grace Grace
Application Guidelines Ultra Shield
®
Select Basik
®
Tri-Flex 30
®
Desert southwest United States
Under copper, zinc or Cor-Ten
®
in high altitude climates
Under architectural metal roofs
Roofing in high altitude/alpine regions
Premium protection from severe ice dams
As a vapor barrier
As a temporary roof
(see product specific appropriate exposure guidelines)
Note: When interpreting the above chart, consider that all Grace self-adhered underlayments, including Grace Ice & Water
Shield, Grace Ultra, Grace Select and Grace Basik, are waterproofing membranes, while Grace Tri-Flex 30 provides a
premium water-shedding roof protection.
* For application on wood substrates only
** White color only
*** White color is recommended
Best Good Not Recommended
* **
***
Waterproofing Membranes
Water-Shedding
Membrane
Grace Roof Detail Membrane is suitable for use in the same roofing environments as Grace Ice & Water Shield, Grace
Select, Grace Basik and Grace Tri-Flex 30 (except in the desert southwest U.S.). Please see the chart below for more details.
Performance Properties
P
roperty Value Test Method
Color Gray-black
Thickness, membrane 40 mil (1.02 mm) ASTM D3767 method A
Tensile strength, membrane 250 psi (1720 kN/m
2
) ASTM D412 (Die C modified)
Elongation, membrane 250% ASTM D412 (Die C modified)
Low temperature flexibility Unaffected @ -20°F (-29°C) ASTM D1970
Adhesion to plywood 3.0 lbs/in. width (525 N/m) ASTM D903
Permeance (max) 0.05 Perms (2.9 ng/m
2
s Pa) ASTM E96
Material weight installed (max) 0.3 lb/ft
2
(1.3 kg/m
2
) ASTM D461
Product Data 18 in. width 9 in. width
R
oll length 50 ft (15.2 m) 50 ft (15.2 m)
Roll width 18 in. (457 mm) 9 in. (229 mm)
Roll size 75 ft
2
(7.0 m
2
) 37.5 ft
2
(3.5 m
2
)
R
ipcord • One at center (9 in. from edge) • One at center (4.5 in. from edge)
• Two near edge (4.5 in. from edge)
Packaging Corrugated carton Six individually labeled rolls in
c
orrugated carton
Roll weight 19 lbs (8.6 kg) 9.5 lbs (4.3 kg)
Rolls per carton One (1) Six (6)
C
artons per pallet 50 30