How much does it cost to repair and recoat an existing epoxy floor in Ottawa

Repairing and Recoating an Existing Epoxy Floor in Ottawa

Repairing and recoating an existing epoxy floor in Ottawa typically costs $4 to $10 per square foot, which puts a standard two-car garage at $1,600 to $6,000. This is generally 30 to 50 percent less than a full new installation because you are working with an existing system rather than starting from bare concrete, though severely damaged floors can approach new installation costs if extensive prep is needed. Ottawa's brutal climate is the primary reason epoxy floors need recoating — our 50-plus freeze-thaw cycles, heavy road salt exposure, and temperature swings from minus 30 to plus 35 degrees push even quality coatings to their limits over time.

The cost depends heavily on the condition of the existing coating. If your epoxy is simply worn thin, scratched, or has lost its gloss but is still well-bonded to the concrete, a light abrasion and recoat is the most affordable option at $4 to $7 per square foot. This involves lightly sanding or screening the existing surface to create a bonding profile, then applying a new topcoat of epoxy, polyaspartic, or urethane. The existing coating acts as the base, saving significant material and labour costs. This approach works particularly well when the original floor was professionally installed with quality materials.

If the existing epoxy is peeling, flaking, or delaminating in patches, the damaged sections must be removed down to bare concrete before recoating. Spot repairs of peeling areas with full removal and re-application typically add $3 to $5 per square foot to the affected areas. When more than 30 to 40 percent of the floor is failing, a full strip and recoat becomes more cost-effective, running $7 to $12 per square foot. Full removal involves diamond grinding or shot blasting to take the old coating down to bare concrete, which is labour-intensive and generates significant dust.

Before committing to a recoat, a good contractor will investigate why the original coating failed. In Ottawa, the most common culprits are moisture vapour transmission through the slab, inadequate surface preparation on the original installation, or use of a water-based product that could not handle Ottawa's salt and freeze-thaw conditions. If moisture was the issue, a moisture mitigation system costing $2 to $6 per square foot must be installed before recoating, or the new coating will fail the same way. A moisture test costs $100 to $200 and is essential before any recoat in Ottawa.

For budget planning, a typical garage recoat in good condition runs $2,000 to $3,500, while a floor with significant damage needing partial removal and concrete repair can reach $4,000 to $6,000. The best time for recoating in Ottawa is late spring through early fall when garage temperatures naturally stay above the 10-degree Celsius minimum required for proper curing. Get at least three quotes and make sure each contractor inspects the floor in person before quoting. You can find flooring professionals through the Ottawa Construction Network directory at justynrookcontracting.com.

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Looking for experienced contractors? The Ottawa Construction Network connects Ottawa homeowners with qualified professionals:

• Luxe Painting and Renovations
• RenoMotion Inc.
• Keanu Karpentry
• L.L. Renovation
• Engur Construction