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GAF Bonding Primer Two-Component Solvent-Based Epoxy Sealing Primer, 5 Gallon Part B
Regular price $238.00Orders start at $399 — combine any items to reach the minimum. Learn more
GAF Bonding Primer Two-Component Solvent-Based Epoxy Sealing Primer, 5 Gallon Part B
GAF Bonding Primer is a two-component, solvent-based epoxy primer that seals porous substrates and improves adhesion (formerly known as UniTile LV Sealer). Sold as Part B in a 5-gallon unit. Pair it with the corresponding Part A component and compatible tile or coating systems on porous concrete surfaces.
Key Features:
- Porous substrate sealing: Two-component, solvent-based epoxy formulation is designed to seal porous substrates while improving adhesion.
- Deep penetration: Low-viscosity sealer penetrates very small crevices to preserve porous surfaces.
- Reduces concrete dusting: In-depth protection helps reduce concrete dusting and minimize maintenance.
- Stable concrete condition: Helps protect and preserve concrete in a stable condition.
- 5-gallon unit: Supplied as Part B in a 5-gallon (5G) sell unit.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | GAF |
| Sell unit | 5-gallon pail (Part B) |
| Product line | GAF Bonding Primer (formerly UniTile LV Sealer) |
| Material | Two-component solvent-based epoxy |
| Available sizes | Part B, 5 gal (5G) pail |
| Dimensions | 5-gallon container |
| Intended use | Primer and sealer for porous concrete substrates to improve adhesion |
| Type | Bonding primer / penetrating sealer |
| Components | Two-component (Part B supplied; use with corresponding Part A) |
Coverage & How Much You Need:
Coverage per 5-gallon unit depends on substrate porosity and is not stated in the sources; size your job by testing penetration on the actual concrete surface.
Fit and Compatibility:
Use on porous concrete and compatible GAF tile/coating systems as a two-part epoxy primer. The matching Part A component and subsequent coatings are sold separately; confirm system requirements before application.
Frequently Asked Questions (FAQ):
Q: What is included in the sell unit?
A: One 5-gallon pail of GAF Bonding Primer Part B. The Part A component of the two-part system is supplied separately.
Q: What was this product previously called?
A: It was formerly known as UniTile LV Sealer.
Q: What surfaces is it for?
A: It is designed for porous substrates, especially concrete, where it seals small crevices, reduces dusting, and improves adhesion of subsequent materials.
Q: How much area does a 5-gallon unit cover?
A: Coverage is not published in the sources; it depends on substrate porosity, so run a test section on your concrete to determine consumption.
Q: How does it improve adhesion?
A: The solvent-based epoxy penetrates the pores of the substrate and leaves a stable, sealed base that improves adhesion for the materials applied over it.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Two-component epoxy primers are mixed strictly at the manufacturer ratio and must be applied within their working time, so stage both parts before starting. On chalky or dusty concrete, this penetrating sealer stabilizes the surface before tile or coating work. Because it is solvent-based, verify substrate moisture and ventilation conditions on the roof before application.
Solvent-based epoxy primers require adequate ventilation, and proper personal protective equipment should be worn during mixing and application.
Order GAF Bonding Primer Part B in the 5-gallon unit to seal and prime porous concrete before your next system installation.
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