Subfloor Repair in North Metro Atlanta

Our Subfloor Repair & Leveling Process

We don't just cover up structural imperfections—we fix your entire foundation.

Leveling Uneven Concrete Slabs

We mechanically grind down high ridges, bumps, and cured slab crowns using heavy-duty diamond grinders with integrated HEPA dust containment systems. For dips, low spots, or sloping areas, we prep the concrete with a bonding primer and pour self-leveling underlayment compound to achieve a flat, mirror-smooth base that meets strict manufacturer tolerances (typically within 3/16" over a 10-foot radius).

Repairing/Replacing Wood Subfloors & Joists

Over time, settling foundations or old plumbing leaks can cause wooden floor joists to rot and plywood panels to delaminate or sag. We remove rotted OSB or plywood sheets, sister weak or damaged floor joists with new structural framing lumber, and screw down fresh, tongue-and-groove exterior-grade subfloor panels with construction adhesive to permanently eliminate pops and squeaks.

Professional Moisture Testing

We test every job site before installation using industry-standard testing methods:

• Calcium chloride testing: Designed specifically for concrete slabs, this test measures the rate of moisture vapor emission over a 60- to 72-hour period. Safe installation generally requires readings below 3.0 lbs per 1,000 sq. ft. per 24 hours (up to 5.0 lbs depending on the specific flooring adhesive or manufacturer specs). If levels exceed this, an epoxy moisture mitigation barrier is applied before installation.
• Pinless electronic moisture meters: Used to gauge deep moisture within concrete slabs and wood subfloors without damaging surfaces. Concrete slabs must read below 75%–80% Relative Humidity (RH), while plywood subfloors must register below 12% Moisture Content (MC)—and stay within 2% to 4% of the wood flooring material being installed to prevent expansion or shrinkage.