Subfloor Repair & Levelling

No flooring installation can succeed without a properly prepared subfloor — and Calgary's soil conditions and construction history create subfloor challenges that demand expert attention. The city's expansive clay soils cause foundation settling and concrete slab heaving that leave basement floors uneven by 5-10mm or more across a room.

Older homes in communities like Capitol Hill, Renfrew, and Bridgeland often have deteriorated plywood subflooring with soft spots, squeaks, and moisture damage from decades of use. Self-levelling compound, concrete grinding, and plywood replacement are the professional solutions that create a flat, stable surface for any flooring material.

Subfloor preparation is the single most important step in any flooring project, yet it is the step most often cut short by inexperienced installers trying to save time. In Calgary, where concrete slabs are the norm for basements and many main floors, moisture testing is mandatory before any levelling compound is applied — Alberta's freeze-thaw cycles can push moisture through concrete that tests dry on the surface.

For wood-framed upper floors, structural assessment of joists and existing plywood ensures your new flooring has a solid foundation. Our network subfloor specialists carry WCB Alberta coverage, use commercial-grade levelling compounds rated for Calgary conditions, and ensure your subfloor meets manufacturer specifications before any finish flooring is installed — protecting both your investment and your warranty.