The GAF GAFGLAS MineralSurfaced Cap Sheet 39.375″ x 32.6″ 1 Square is a bur & mb systems from GAF for exact-match material ordering. Match manufacturer model/MPN 3403920. This variant is sold as RL with SKU GAFCSWH. GAFGLAS Mineral-Surfaced Cap Sheet is an asphalt-coated glass fiber mat cap sheet surfaced with mineral granules

Key Specs

• Brand: GAF
• Model / MPN: 3403920
• SKU: GAFCSWH
• Sell unit: RL
• Product type: BUR & MB Systems
• Size: 39.375″ x 32.6″ 1 Square
• Color / finish: 39.375″ x 32.6″ 1 Square
• Category: Commercial Roofing | Commercial Roofing/Membranes | Commercial Roofing/Membranes/BUR & MB Systems

Key Features

• GAFGLAS Mineral-Surfaced Cap Sheet is used as the surfacing ply in the application of hot applied built-up roofs and as a top ply in base flashing construction
• Durabilityglass base resists the effects of moisture on the roof system
• Granule surface provides an ultraviolet protective surface

Coverage & How Much You Need

Confirm coverage/yield from the manufacturer instructions and job takeoff before ordering.

Compatibility / Fitment

Use only with compatible systems and installation conditions specified by the manufacturer.

FAQs

What exactly am I ordering?

GAF GAFGLAS MineralSurfaced Cap Sheet 39.375″ x 32.6″ 1 Square, sold as RL, SKU GAFCSWH, manufacturer model/MPN 3403920.

What unit is the price based on?

The price is for the RL sell unit.

What should I match before ordering?

Match brand, model/MPN where available, size/color, sell unit, and the project specification.

Can this be substituted?

Treat this as an exact-match building material selection; hold for review before substituting a different model, color, size, or system family.

How do I estimate quantity?

Use the project takeoff plus manufacturer installation instructions, including waste, overlap, and accessory requirements.

Follow manufacturer instructions, OSHA-safe work practices, local code, and project specifications.

Product Expert Notes

Choose this variant when GAF, SKU GAFCSWH, RL sell unit, and MPN 3403920 match the job requirement.