[ Epoxy System ]

Basement Epoxy Flooring

Moisture-tolerant epoxy coatings for finished basements.

[ Overview ]

What is Basement Epoxy?

Basement installs revolve around moisture. Slabs on grade transmit vapor from below, so a proper install begins with a calcium chloride or RH probe test and, when needed, a 100%-solids vapor-mitigation primer before the color coat. Beyond durability, a coated basement floor brightens the whole level, cuts down on musty concrete dust, and gives finished-space potential to what was previously storage.

Basement slabs sit on grade and almost always carry hydrostatic and vapor pressure from the soil below, so a proper install starts with a calcium chloride or ASTM F2170 relative-humidity moisture test — not a visual inspection. If moisture-vapor transmission exceeds the resin manufacturer's spec, a 100%-solids epoxy vapor-mitigation primer is applied to bring the slab within tolerance before any color coat goes down. Skipping this step is the number-one cause of basement coating failure — you'll see bubbles, blisters, and delamination within a season. Once the slab is stabilized, the finish system is usually a pigmented epoxy with a full flake broadcast (for slip resistance and to hide efflorescence patterns) sealed under a mildew-resistant clear topcoat. The result is a bright, easy-clean surface that turns a raw basement into usable living space — home gyms, offices, playrooms, and in-law suites all benefit.

[ Best For ]

Ideal Applications

  • Finished basements and rec rooms
  • Home gyms and home offices
  • Basements with a history of dampness or efflorescence
  • Basement bars, wine rooms, and entertainment spaces
  • Below-grade workshops and craft rooms
  • Rental basement apartments and in-law suites
[ FAQ ]

Basement Epoxy Questions, Answered

Can epoxy be installed over a damp basement floor?

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Only with a moisture-mitigation primer. Skipping this step is the #1 cause of basement epoxy delamination.

How much does basement epoxy cost?

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Basement installs run $4–$9 per square foot for standard color systems, and $6–$12 per square foot when vapor mitigation is required.

Will epoxy stop basement leaks?

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No — epoxy is a floor coating, not a waterproofing membrane. Active water intrusion must be resolved before coating.

How is basement moisture tested?

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Contractors use either a calcium chloride kit (measures pounds of MVT per 1000 sq ft over 72 hours) or an ASTM F2170 relative-humidity probe drilled into the slab. Both are inexpensive and non-destructive.

Can I coat over an old basement floor with existing paint?

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Only if the existing paint passes an adhesion test. Otherwise the old paint must be diamond-ground off — new epoxy is only as strong as the layer beneath it.

Does basement epoxy help with radon?

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It reduces slab gas emission but is not a substitute for a proper sub-slab depressurization system when radon levels are elevated.