CDS Hardwood Floors
Subfloor Repair in Maryland, Virginia & DC
Quick Answer
Subfloor repair addresses damage or deficiencies in the plywood or OSB layer beneath your hardwood — water rot, sagging joists, delaminated panels — before new flooring is installed.
Every hardwood problem is a subfloor problem until proven otherwise. Squeaks, cupping, uneven boards, and cracked finish all trace back to what's underneath.
We inspect and repair subfloors as part of virtually every install and repair, from re-screwing loose panels to full plywood replacement over damaged joists.
Key Takeaways
- You can't fix a hardwood problem without fixing the subfloor
- Screws, not nails
- Flatness spec: 3/16" over 10'
Benefits
- • Prevents future hardwood failures
- • Fixes squeaks permanently
- • Ensures new hardwood installs perform to spec
Our Process
1. Assessment
Moisture, deflection and fastening checks.
2. Selective repair or replacement
Screw down loose panels; replace rotted sections.
3. Level
Self-leveling compound or shims to meet flatness spec.
4. Ready for finish flooring
Vapor barrier and cleanliness before hardwood.
Ready to talk about your project?
Materials We Use
- • 3/4" T&G plywood or OSB
- • Structural screws (never nails alone)
- • Self-leveling compound
What to Expect
- • Adds 1–3 days to a typical install
- • Sometimes reveals additional issues once opened up
What Affects Pricing
We don't publish flat pricing — every home is different. These are the factors we weigh in your written estimate:
- • Extent of damage
- • Joist repair (if required)
- • Access (crawlspace vs finished ceiling below)
Common Problems & How We Solve Them
Sagging over span
Sistering joists or adding a mid-span beam.
Delamination from moisture
Address moisture source first, then replace panels.
Maintenance Tips
- • Inspect crawlspaces annually for moisture
- • Address plumbing leaks immediately
Warranty & Guarantee
All CDS craftsmanship is backed by our workmanship guarantee. Manufacturer finish warranties are transferred to you in full.
Why Choose CDS Hardwood Floors
Family-owned, licensed (MHIC #141267), fully insured and bonded, with 15+ years serving Maryland, Virginia, DC, West Virginia and Pennsylvania. Our craftsmanship has earned us landmark commercial work (including DAR Constitution Hall in Washington, DC) alongside thousands of luxury residential projects.
Frequently Asked Questions
How long does subfloor repair take in a typical home?
Most residential projects are completed within 3–7 working days, depending on square footage, drying times and any repairs required. We provide a firm timeline in your written estimate.
Do I need to move out during subfloor repair?
In most cases, no. Our dustless equipment keeps the home habitable, though we recommend staying off finished areas for 24–72 hours to let the finish cure.
Can I schedule a consultation?
Yes. Every subfloor repair project starts with a free on-site consultation and a detailed written quote, usually delivered within 24 hours.
Are you licensed and insured?
Yes. CDS Hardwood Floors is a Maryland-licensed contractor (MHIC #141267), fully insured and bonded for your protection.
Related Services
Hardwood Floor Installation
Hardwood floor installation is the professional layout of new solid or engineered wood planks over a properly prepared subfloor, including acclimation, nailing or gluing, sanding and finishing.
Water Damage Hardwood Repair
Water damage to hardwood floors — from leaks, floods, dishwashers or refrigerators — requires prompt drying, subfloor assessment, board replacement and refinishing to prevent long-term mold and structural damage.
Moisture Testing
Moisture testing measures water content in subfloor, slab and hardwood material before installation — the single most important step for preventing cupping, gapping and delamination.