GAF Materials Corporation
1361 Alps Road
Wayne, NJ 07470
Tel: (800) 766-3411
Web site: http://www.gaf.com
GAFGLAS®
#80 Ultima™ Base Sheet
“Ultimate Protection when you can invest for the long term.”
Description
GAFGLAS® #80 Ultima™ Base Sheet is a high performance, asphalt
coated, glass-reinforced roofing base sheet. Special Loctite™ closed-pore
design prevents bleed-through while providing long-lasting leak protection
in a variety of demanding applications.
Uses
Heavyweight construction is ideal for all premium roofing systems:
• for ultimate leak protection...in applications when the potential
cost of damage from a leak is severe
• as an effective flame retarder...when used in torch-applied
modified bitumen systems
• in place of organic felts...under tile roofs or in BUR systems
• great for nailable systems...where bleed-through can cause
premature failure from deck movement (especially plywood decks)
• for difficult roofing situations...where the performance of
a lighter-weight base sheet is inadequate
• enhances many systems...when used in place of standard base
sheets, improves the overall performance of a BUR or modified bitumen system
• superior investment...when life cycle cost is more important
than the initial installed cost
Advantages
• helps prevent splitting and leakage—closed-pore design means
asphalt doesn't bleed through, so system remains independent of deck movement
when mechanically attached
• saves labor—rolls out flatter and installs easier than competitive
base sheets
• reliable performance—resists long-term curling and shrinkage
that can cause premature roof failure (as can happen with organic products)
• inorganic Micro-Weave™Core—prevents decay and provides superior
tensile strength with dimensional stability
• highest fire rating—for use in UL Class A rated assemblies
Applicable Standards
• UL Approved for use in the construction of Class A, B, or C roofs
(Type G2 BUR)
• FM approved
• ASTM D-4601, Type II
• Dade County Product Approval
Product Data (Approximate)
Roll Size................. 39.4” x 65.2’ (1m x 19.9m)
Coverage per Roll.......2 squares
Roll Weight............ 75 lbs.(34.1kg)