Subfloor Repair in Los Angeles
Water damage repair, leveling, plywood replacement, and structural reinforcement. We find and fix subfloor problems before installing new floors. Bathroom subfloor rot, kitchen leaks, and foundation settling.
- Licensed, Bonded & Fully Insured
- Free Estimates — Response Within 2 Hours
- 2-Year Installation Warranty
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Structural Subfloor Restoration
The most beautiful hardwood in the world will fail within a year if installed over a rotting, sagging, or compromised subfloor. We view the subfloor as the absolute most critical component of the entire flooring ecosystem.
From minor squeaks caused by loose nails in the plywood sheet, to catastrophic water damage rotting through the joists in a master bathroom, our crews are trained carpenters who diagnose and surgically replace the structural wood underneath.
We routinely perform structural reinforcements, replace OSB or plywood sheets, treat mold matrices, and install heavy-duty moisture barriers before the final surface application. We don't hide problems; we fix them permanently.
Subfloor Damage Pricing Estimates
| Material | Price/sqft | Best For | Lifespan |
|---|---|---|---|
| Minor Plywood Squeak Fixes | $1–$3/sqft | Living rooms, second floors | Structural Life |
| Moderate Sheet Replacement | $4–$7/sqft | Kitchen leaks, entryway dips | Structural Life |
| Severe Joist/Rot Reconstruction | $8–$15+/sqft | Collapsed bathrooms, severe floods | Structural Life |
Prices are highly variable based on whether structural joists need sistering or if it's simply a surface plywood swap.
How We Install Your Hardwood Floors
Free In-Home Estimate
We measure, inspect the subfloor, and discuss materials. You get an exact written quote within 24 hours.
Material Selection
Choose your wood species, plank width, stain color, and finish. We bring samples to your home.
Subfloor Preparation
We fix any damage, level uneven areas, and install moisture barriers. This is the step most contractors skip.
Installation
Our crew installs your hardwood plank by plank. Nailed, glued, or floating — whichever method fits your subfloor and species.
Finishing & Cleanup
Baseboards installed, transitions set, floors cleaned. We walk through the finished project with you before we leave.
Subfloor Damage Assessment
Squeaky Spots & Loose Nails
Plywood sheets have pulled slightly away from the structural joists, causing friction and noise. We screw them tight and shim gaps.
Soft Spots & Minor Water
Sink overflows or old appliance leaks have caused the OSB/plywood to swell or soften. We cut out the damaged sheets and secure fresh plywood to the joists.
Structural Rot & Joist Damage
Long term plumbing leaks have compromised the actual load-bearing joists. We have to open the floor, extract the rot, and 'sister' new heavy lumber alongside the old joists.
Why LA Homeowners Choose Red Stag
No Subcontractors
Every installer on your job is our employee. No random crews, no miscommunication, no finger-pointing.
Subfloor Inspection Included
We check what's underneath before we install anything on top. If there's damage, we fix it first. Most competitors skip this.
2-Year Warranty
If anything goes wrong with our installation within 2 years, we come back and fix it. No questions, no charge.
Subfloor Repair Questions
Get Your Subfloor Repair Estimate
Tell us about your project and we'll get back to you within 2 hours.