Henry^® 604 25# Fiberglass Base Sheet is a heavy duty asphalt coated sheet with a heavyweight, non-woven fiberglass mat, suitable for use in fire retardant membrane assemblies, built-up roofing systems, ply sheets, and base sheets. It has a coating layer of asphalt on each side that reacts with Henry^® Cold Application Cement solvents to provide excellent adhesion without decreased tensile strength.

Features

• Has lay lines appropriate for normal roofing side laps
• Prevents sticking in the roll with sand lightly sprinkled on sheet surface
• Provides coated base and ply sheet for BUR
• 3 square roll
• ASTM D4601 Type II

May be applied with the following Henry cold application asphalt cement solutions:

• 203 Cold-Ap Roof and Lap Adhesive
• 403 Spray-grade Cold-Ap Cement
• 902 PBA Permanent Bond Adhesive
• 903 Modified Bitumen Membrane Adhesive
• 890-12 Hot Rubberized Asphalt or 790-11 Hot Rubberized Asphalt

Related products

Henry^® 606 80# Premium SBS Modified Mineral-Surfaced Underlayment

Henry^® 608 33# Premium SBS Modified Glass Base Sheet

Henry^® 607 33# Fiberglass Base Sheet (UL Type G2)

203 Roll Roofing Adhesive

• Installation and Technical Literature

  Henry^® 604 – 25# Fiberglass Base Sheet Data Sheet  

  Henry^® 604 – 25# Fiberglass Base Sheet SDS Sheet  

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