Full Product Manual

diately following underlayment application. Grace underlayment
cannot be used as a primary roof covering. The product is not
designed for permanent outdoor exposure. The installation of
the nal roof covering should take place within 6 months.
8. For additional protection lay a single length of Grace
membrane vertically in valleys and on hips prior to installing
metal ashings (if used) and before installing horizontal under-
layment. Return Grace roong underlayment up all abutments
at least 12 inches (more in heavy snow areas). Secure and trim
to suit.
9. Prior to loading roong materials on Grace underlayment it is
recommended that roof jacks, toe-boards or a storage platform
be secured to the underlying roof deck to prevent slippage of
stored materials on steep sloped roofs. See OSHA Regulations
(Standards – 29 CFR), Fall Protection Systems Criteria and
Practices – 1926.502.
10. Check local building code to ensure compliance in your
area, as local building codes may vary.
Code Approvals
• ICC-ES ESR 2926
• Miami-Dade County, FL Notice of Acceptance No.11098.1
• Complies with ASTM E108/UL 790 for use in the installation
of Class A asphalt glass ber mat shingles and Class C asphalt
organic felt or metal shingles
• Meets ASTM D226 physical requirements of Type I and Type
II (No. 15 and No. 30 asphalt felt)
Precautions and Limitations
• Consistent with good roong practice, always wear fall protec-
tion when working on a roof deck.
• Slippery when wet or covered by frost, debris or dust.
Performance Properties
Property Grace Tri-Flex
®
Test Method
Color Black
Weight 28 lbs (10 sq roll)
Tear strength MD 58 lbs; CD 77 lbs ASTM D4533
Accelerated aging Pass (no damage, cracking, chipping) ICC-ES AC48
Ultraviolet resistance Pass (no peeling, chipping, cracking, aking) ICC-ES AC48
Water ponding Pass (no percolation) ASTM D779
Pliability Pass (no cracks) ASTM D226
Water transmission Pass ASTM D4869
Tensile strength MD 96 lbs; CD 116 lbs ASTM D828
Thickness 7 mils ASTM D3767
Product Data
10 sq Roll
Roll length 250 ft (76.2 m)
Roll width 48 in (1.05 m)
Roll size 1,000 ft
2
(92.9 m
2
)
Roll weight 28 lbs (12.7 kg)
Rolls per pallet 30
53