What type of paint should I use on a concrete garage floor in New Brunswick?

For a concrete garage floor in New Brunswick, your two main options are epoxy floor paint and masonry/concrete floor paint — and epoxy is the clear winner for any garage that sees regular vehicle traffic, chemical exposure, or New Brunswick's freeze-thaw-related moisture intrusion.

Standard concrete paint (sometimes labelled masonry paint or porch and floor paint) is latex-based, easy to apply, and cheaper — typically 0-60/gallon — but it sits on top of the concrete rather than bonding into it. On a garage floor in NB, where moisture migrates up through concrete slabs during spring thaw and after rain, latex floor paint tends to peel within a season or two. It's acceptable for a utility room, storage area, or a low-traffic workshop, but for an actual car garage it's a short-term solution at best.

Epoxy floor coating is the professional choice for NB garages. A two-part water-based epoxy kit — brands like Rust-Oleum EpoxyShield, available at Home Depot in Moncton or Fredericton, or professional-grade options from specialty suppliers — chemically bonds to the concrete surface, creating a hard, glossy, chemical-resistant finish that can handle vehicle traffic, oil drips, road salt tracked in from NB winter roads, and the repeated freeze-thaw moisture cycle. Water-based epoxy kits run 20-200 for a double-car garage and are DIY-friendly. Solvent-based epoxy is harder and more durable but has much higher VOC content and requires better ventilation and faster application technique.

The single most important factor with any garage floor coating in NB is moisture testing. Before you apply anything, tape a piece of plastic sheeting to the concrete floor, seal the edges with tape, and leave it for 24 hours. If condensation forms underneath, you have moisture migrating up through the slab — a common issue in older NB homes and any garage without proper sub-slab vapour barrier. Epoxy applied over a damp slab will delaminate, sometimes spectacularly. If your concrete is damp, you need to address the moisture source or use a penetrating concrete sealer rated for moist substrates before coating.

Surface prep for garage floor coating:

• Etch the concrete with a muriatic acid solution or a concrete etching product — this opens the pores for adhesion


• Fill cracks and expansion joints with a flexible concrete patch compound


• Sweep, vacuum, and clean thoroughly — oil stains must be degreased with a concrete degreaser or TSP


• Allow the floor to dry completely (48-72 hours minimum in NB spring conditions)


• Apply the epoxy base coat, then decorative flakes if desired, then a clear topcoat sealer for extra protection

A properly applied two-part epoxy on a well-prepped NB garage floor will last 5-10 years before it needs refreshing. Hire a professional coating applicator if the prep work feels daunting — the prep is 80% of the job, and mistakes at that stage mean the coating fails regardless of product quality.

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