GAF EverGuard TPO 80 Mil Membrane White 10 ft x 100 ft – 820A920

The GAF EverGuard 820A920 is a white 80 mil, 10 ft x 100 ft reinforced TPO membrane roll for commercial low-slope roof systems. It is for crews specifying a thicker EverGuard TPO sheet with heat-welded seams and roughly 1,000 sq ft of membrane coverage per roll before laps and project waste.

Key Specs

• Model / MPN: 820A920
• Brand: GAF
• Type: Smooth reinforced TPO single-ply roofing membrane
• Thickness: 80 mil / 0.080 in
• Roll size: 10 ft x 100 ft
• Coverage per roll: 1,000 sq ft
• Color: White
• Application: Commercial low-slope roof membrane; heat-welded seams
• Standards / listings: ASTM D6878, UL, CRRC, FM, Florida Building Code, Miami-Dade, and Title 24 listed in GAF TPO documentation
• Sell unit: Roll

Coverage & How Much You Need

One 10 ft x 100 ft roll covers 1,000 sq ft before seam laps, perimeter waste, penetrations, curbs, and field cuts. For a 10,000 sq ft low-slope field, start with about 10 rolls plus project waste and detailing material.

• Field rolls = measured roof field sq ft ÷ 1,000.
• Add laps, perimeter, penetrations, curb/detail flashing, and waste from the project drawings.
• Order compatible TPO accessories separately; the membrane roll is not a complete roof system by itself.

Compatibility / Fitment

Use with a GAF EverGuard TPO system, compatible insulation/cover board, approved fasteners or adhesive, TPO accessories, and heat-welded seam procedures. Do NOT substitute this for EPDM, PVC, modified bitumen, or steep-slope shingle roofing; the system design, attachment method, and local code approval must match the project documents.

FAQs

How much roof area does one roll cover?

One 10 ft x 100 ft roll is 1,000 sq ft before overlap, perimeter cuts, penetrations, curbs, and waste. For ordering, calculate field area, then add material for laps, details, and project-specific waste.

When should I choose 80 mil instead of 45 or 60 mil TPO?

Choose 80 mil when the specification calls for the thicker EverGuard sheet or the project wants additional membrane thickness for commercial low-slope service. Do not downgrade thickness without written approval from the specifier or roof-system manufacturer.

Is this a white reflective TPO membrane?

Yes. This SKU is the white EverGuard TPO membrane; GAF literature describes white TPO as highly reflective and emissive, which can help with roof-surface heat management when the full system is installed correctly.

What seams are used with this membrane?

EverGuard TPO is designed for heat-welded seams. Use trained installers, correct welder settings, probe seams, and follow GAF details; taped or asphaltic seam methods are not substitutes for TPO welding.

What else should I order with the roll?

A complete TPO roof usually needs insulation or cover board, attachment plates/fasteners or adhesive, TPO flashing, walkway pads where required, termination bars, drains or scuppers, and compatible sealants. Send the takeoff to the Pro Desk and we can help check the accessory list.

Commercial membrane roofing involves fall exposure, hot-air welding, weather limits, and warranty-critical details. Use trained roofing crews, OSHA fall protection, and the current GAF installation/specification manual.

Product Expert Notes

Choose this 80 mil EverGuard roll when the project documents call for a thicker white GAF TPO membrane and the crew is set up for welded single-ply installation. It is a strong B2B listing because the buying decision is driven by exact MPN, thickness, roll size, and system compatibility rather than retail-style finish copy.