GAF EverGuard 1121 TPO Bonding Adhesive, Amber — 5 Gallon Pail

GAF EverGuard 1121 TPO Bonding Adhesive, Amber — 5 Gallon Pail

Regular price $176.78

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EverGuard 1121 TPO Bonding Adhesive, 5 Gal

Contact-type, rubber-based adhesive formulated for bonding TPO single-ply membranes and flashings to roofing substrates. Delivers reliable adhesion to polyisocyanurate insulation and gypsum-based cover boards for adhered TPO roof systems.


Key Features:

  • Purpose-Built for TPO: Formulated specifically to bond TPO membranes and flashings to approved substrates
  • Contact Adhesive Performance: Rubber-based formula provides strong, consistent adhesion on adhered roof systems
  • Substrate Versatility: Suitable for polyisocyanurate insulation and gypsum-based cover boards
  • Productivity Coverage: Estimated 50–70 sq ft per gallon (depending on substrate and application)
  • Contractor-Friendly Packaging: Supplied in a durable 5-gallon pail for larger jobs

Specifications Table:

Specification Details
Product Name EverGuard 1121 TPO Bonding Adhesive
Brand GAF
Color Amber
Packaging 5 Gallon Pail
Coverage Area 50 to 70 sq. ft. per gallon
Application Contact-type adhesive for bonding TPO single-ply membranes and flashings
Compatible Substrates Polyisocyanurate insulation; gypsum-based cover boards
Material Base Synthetic polymer; rubber-based
System Use TPO roof systems
Unit of Measure PL
Item Weight 36 lb
SKU / Material Number 465632
Manufacturer Number 7780OOM
Product Number GAFTBA5AMB

Frequently Asked Questions (FAQ):

Q: What substrates can this adhesive bond to?
A: It is designed for TPO membranes and flashings and bonds to polyisocyanurate insulation and gypsum-based cover boards.


Q: How much coverage should I expect?
A: Approx. 50–70 sq ft per gallon, varying by substrate porosity, application method, and conditions.


Q: Is this a contact adhesive?
A: Yes. It is a rubber-based, contact-type bonding adhesive for adhered TPO systems.


Q: What is the color of the adhesive?
A: Amber.


Q: What size container does it come in?
A: A 5-gallon pail.


Quiet Strength for High-Performance Roofscapes

This adhesive is the quiet hero beneath a flawlessly tailored roofscape, delivering steadfast hold without stealing the spotlight. I love its amber tone and clean, purposeful presence—engineered to bond TPO with confidence. Pair it with crisp white TPO membranes and streamlined metal edging for a polished, contemporary silhouette. It’s an essential foundation for a refined, resilient building envelope.


Secure your TPO membrane with the proven bond of EverGuard 1121—add the 5-gallon pail to your cart and build with confidence.

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