GAF Materials Corporation
1361 Alps Road
Wayne, NJ 07470
Tel: (800) 766-3411
Web site: http://www.gaf.com
GAFGLAS®
Ply4
Description
GAFGLAS Ply 4 roofing felt is constructed with a strong glass fiber
mat
that is coated with the finest quaIity asphaIt, and is designed with optimum
porosity to assure a sound, watertight membrane.
Uses
GAFGLAS Ply 4 is used as a ply felt in the construction of built-up
roofs. It is designed for use in all climatic zones and is appropriate
for use as a base sheet, as a ply felt, and in the construction of flashing
membranes.
Advantages
• High tensile strength and a high degree of dimensional stability,
resulting in a roof system with greater resistance to splitting and cracking.
• Optimum porosity of the felt provides ready escape of air while allowing
proper asphalt penetration at the time of mopping.
• Asphalt coating provides high degree of moisture resistance.
• Fire resistant—for use in UL Class A rated assemblies.
• Wind uplift resistance— selected roofing assemblies with GAFGLAS
Ply 4 felts meet FMRC Class 1-180 when installed over concrete decks.
• Meets ASTM D-2178, Type IV specifications.
• Meets requirements for application in all climatic zones.
• Rolls out flat for easy installation.
Applicable Standards
• UL Approved for use in the construction of Class A, B, or C roofs
(Type G1 BUR)
• FM Approved
• ASTM D-2178, Type IV
• New York City MEA 78-89 Gravel Surfaced Systems 96-89 Smooth Surf.
Systems
• Dade County Product Approval
Product Data (Approximate)
Roll Size....................39.4" x 161.8' (1.0m x 49.3m)
Coverage Per Roll......... 5 squares
Roll Weight.............40 lbs.(18.2 kg)