Best Wood Rot Repair Companies in St. Louis (2026)
We researched St. Louis contractors who specialize in wood rot repair to help you find the right fit for your project—whether you need targeted epoxy repair of a single post or a multi-system assessment across your entire exterior.
Last Updated: March 2026
Discovering wood rot in your home is never pleasant news. Whether you've spotted soft, crumbling wood on your deck railing, found damaged fascia boards during a gutter cleaning, or received a concerning home inspection report before selling, you need answers—and you need them from someone who won't automatically push you toward expensive full replacement.
St. Louis's climate is particularly harsh on exterior wood. Our freeze-thaw cycles stress wooden structures constantly, summer humidity promotes fungal growth, and our four distinct seasons mean wood is never fully at rest. Add in the aging housing stock in neighborhoods like Webster Groves, Kirkwood, and University City—where many homes are 50-100 years old with original wood trim and decks—and wood rot becomes an inevitable reality for most homeowners.
This guide covers the top contractors, but Wood Rot Experts also provides a matchmaking service so you can describe your project and get connected with the right St. Louis wood rot repair specialist—free of charge.
Our Research Methodology
We evaluated St. Louis contractors who specialize in wood rot repair based on their repair expertise, pricing transparency, customer reviews, and willingness to repair rather than automatically recommend costly replacement. The best wood rot repair isn't about finding someone to rip out your deck—it's about finding a specialist who can accurately assess damage and execute lasting repairs.
Who Are the Best Wood Rot Repair Companies in St. Louis?
Based on our research, the top wood rot repair companies in St. Louis include STL Smart Maintenance, Maniaci Construction, Exterior Wood Restoration, STL Siding Pros, Bone Dry Roofing, Huxco Construction, Moss Restoration, and CertaPro Painters. The best choice depends on your project scope and whether you need repair vs. replacement.
Our evaluation considered specialization, repair philosophy, honest assessment, pricing transparency, local knowledge, and customer reviews.
How We Evaluated Each Company
Specialization
25%Does the company focus on wood rot, or is it a sideline to other services?
Repair Philosophy
25%Will they repair when possible, or default to replacement?
Honest Assessment
20%Do they tell you the truth, even when it's not what you expect?
Pricing Transparency
15%Clear estimates without hidden upcharges or bait-and-switch.
Local Knowledge
15%Understanding of St. Louis homes, climate, and common rot patterns.
Top Wood Rot Repair Companies in St. Louis for 2026
The top St. Louis wood rot repair companies include STL Smart Maintenance, Maniaci Construction, Exterior Wood Restoration, STL Siding Pros, Bone Dry Roofing, Huxco Construction, Moss Restoration, and CertaPro Painters.
1. STL Smart Maintenance
STL Smart Maintenance is a wood rot specialist serving the St. Louis metro with a repair-first philosophy. They focus on accurately assessing rot damage and executing targeted repairs, which translates to meaningful savings compared to contractors who default to full replacement.
Best For: Homeowners seeking a repair-first specialist who won't push unnecessary replacement
Key Highlights
- Wood rot specialist—not a generalist sideline
- Repair-first approach with honest damage assessments
- Experience identifying hidden rot at joints and connections
- Preventive moisture management recommendations after repair
Services Offered
- Deck posts, joists, and railings
- Window frames and sills
- Door frames and thresholds
- Fascia boards and soffits
- Exterior trim and structural members
2. Maniaci Construction
Maniaci Construction has established a strong reputation as a premier deck builder and repair specialist serving St. Charles and St. Louis counties. Their structural knowledge makes them a reliable choice when rot damage extends into load-bearing deck members.
Best For: Homeowners with significant deck rot needing repair and partial rebuild
Key Highlights
- Primarily known for new deck construction
- Deep structural knowledge for deck rot repair
- Fully licensed and insured with comprehensive coverage
- Experience building and rebuilding decks from scratch
Services Offered
- Deck repair and rebuild
- Fence repair
- Pergolas and gazebos
- Hand railings and stairs
3. Exterior Wood Restoration
Exterior Wood Restoration focuses on restoring and repairing exterior wood across the St. Louis area. Their specialty in wood-specific restoration work means they bring focused expertise to rot problems that generalists may approach with a replace-first mindset.
Best For: Homeowners who want a dedicated exterior wood restoration specialist
Key Highlights
- Specialist in exterior wood repair and restoration
- Focused on preserving original wood rather than replacing
- Experience across multiple exterior wood components
- St. Louis climate knowledge for freeze-thaw and humidity
Services Offered
- Exterior wood rot repair
- Deck and porch restoration
- Window and door frame repair
- Fascia and soffit repair
4. STL Siding Pros
STL Siding Pros specializes in James Hardie fiber cement siding installation and properly addresses rot that often hides behind failed siding. Because they completely strip old materials before new installation, they repair all underlying rot—preventing callbacks from rot under new siding.
Best For: Homeowners with siding-related rot planning replacement
Key Highlights
- Completely strips old materials before new installation
- Repairs all underlying dry rot before re-cladding
- Prevents callbacks from rot under new siding
- James Hardie certified installer
Services Offered
- James Hardie siding installation
- Fiber cement board
- Dry rot repair
- Trim replacement
5. Bone Dry Roofing
With over 30 years of experience and thousands of reviews, Bone Dry Roofing handles wood rot in roof structures, eaves, and soffits. They are the strongest choice when rot originates from roofing failures and extends into the underlying wood structure.
Best For: Homeowners with rot in roof structures, fascia, soffits, or eaves
Key Highlights
- Over 30 years of experience in the St. Louis market
- Thousands of customer reviews
- Owens Corning Platinum Preferred certified
- CertainTeed ShingleMaster Select certified
Services Offered
- Roof repair and replacement
- Wood rot repair in roof areas
- Gutter installation
- Emergency storm damage repair
6. Huxco Construction
Based in Crystal City with over 20 years serving Missouri, Huxco Construction handles siding, roofing, and general contracting including rot repair. A practical choice when rot spans multiple exterior systems and you want a single contractor to address everything.
Best For: Homeowners who need a generalist for rot across multiple building systems
Key Highlights
- Over 20 years serving Missouri
- Multi-trade capability across exterior systems
- Can investigate rot across siding, roofing, and decking
- Addresses rot during any exterior project
Services Offered
- Siding installation and repair
- Roofing
- Decks
- Windows and general contracting
7. Moss Restoration
Moss Restoration specializes in historic wood repair across St. Louis's older neighborhoods. Their craftsmen are skilled at matching original wood profiles, trim, and materials—making them the right fit when preserving the character of a pre-war home matters as much as fixing the rot.
Best For: Homeowners with historic St. Louis homes needing period-correct wood rot repair
Key Highlights
- Historic wood specialist with period-correct expertise
- Skilled at matching original trim profiles
- Experience in St. Louis's oldest and most architecturally significant neighborhoods
- Repair-focused to preserve original building character
Services Offered
- Historic wood rot repair
- Period-correct millwork restoration
- Exterior trim matching
- Pre-war home exterior repairs
8. CertaPro Painters of St. Louis County
CertaPro Painters understands that proper exterior painting often requires rot repair first—damaged wood can't hold paint. They offer rot repair as part of their exterior painting preparation, making them a convenient one-stop option when you're already planning a paint project.
Best For: Homeowners planning exterior painting who discover rot during prep
Key Highlights
- Wood rot repair as part of exterior paint preparation
- Ensures properly prepared surfaces hold finishes
- One-stop solution for rot repair and painting
- Professional preparation standards
Services Offered
- Exterior and interior painting
- Wood rot repair
- Pressure washing
- Deck staining
What Does Professional Wood Rot Repair Cost in St. Louis?
Professional wood rot repair in St. Louis typically costs $500-$3,500 for most residential projects, saving homeowners 60-80% compared to full replacement quotes that often run $5,000-$15,000.
| Repair Type | Price Range | Average Cost |
|---|---|---|
| Window Frame/Sill Repair | $150-$400 | $275 |
| Door Frame Repair | $200-$500 | $350 |
| Deck Post Repair | $200-$600 | $400 |
| Deck Joist Repair | $300-$800 | $550 |
| Fascia Board Repair | $15-$25/ft | $20/ft |
| Structural Beam End Repair | $400-$1,200 | $800 |
Real Example: Repair vs. Replacement
A Ladue homeowner received three quotes to replace their deck: $12,000, $14,500, and $18,000. A specialist assessment revealed only 4 posts and 2 joists had rot damage. Total repair cost: $2,800—including a 10-year rot warranty on the repairs.
Why Local Expertise Matters in St. Louis
St. Louis wood rot repair requires understanding freeze-thaw stress, four-season climate challenges, and the specific rot patterns common in Missouri's diverse housing stock.
Freeze-Thaw Cycles
St. Louis winters feature constant freeze-thaw cycling that stresses wood joints, opens cracks, and allows water infiltration. Deck posts are especially vulnerable where they contact concrete footings.
Summer Humidity
Our humid summers provide the warmth and moisture that fungal rot requires to thrive. North-facing surfaces that stay shaded and damp see the most aggressive rot development.
Historic Homes
Webster Groves, Kirkwood, and Clayton feature beautiful older homes with original wood trim. Repair is often preferable to replacement because matching historic millwork is expensive.
How to Choose a Wood Rot Repair Specialist
What percentage of your work is wood rot repair?
Companies where it's 5% of business won't have the techniques that 80%+ specialists develop. Wood rot repair is its own trade.
When do you recommend repair versus replacement?
If the answer doesn't include detailed assessment criteria, you're likely talking to someone who defaults to replacement.
Can you show me before/after photos?
Any experienced specialist should have dozens of photos showing repairs similar to yours (deck rot, window rot, etc.).
What's your process for identifying moisture sources?
Rot recurs unless you address why moisture invaded. If they skip this step, repairs won't last.
What products do you use for consolidation?
Professional wood rot repair involves epoxy consolidants, fungicide treatments, and structural fillers—not just wood putty.
Do you offer a warranty on repairs?
Reputable specialists stand behind their work. Ask about warranty terms and what's covered.
Frequently Asked Questions
How do I know if my wood rot can be repaired or needs replacement?
Generally, rot affecting less than 30% of a member's cross-section can be repaired; structural members with more extensive damage typically need replacement. Only an in-person assessment can determine this accurately.
Is wood rot repair as strong as the original wood?
Modern epoxy consolidants and fillers often create repairs stronger than the original wood, with better moisture resistance. Properly executed repairs are structural and long-lasting.
How long does wood rot repair last?
Quality repairs with proper moisture management last 10-20+ years. The key is addressing the moisture source that caused original rot—without this step, rot will recur.
What causes wood rot in St. Louis homes?
St. Louis's freeze-thaw cycles, summer humidity, and four-season climate stress exterior wood constantly. Common causes include failed caulking, gutter problems, splash-back from hard surfaces, and ground contact.
Should I repair wood rot before selling my home?
Yes—home inspectors flag wood rot, and buyers' contractors often quote replacement. Proactive repair creates clean inspection reports and prevents negotiation leverage for buyers.
Can I repair wood rot myself?
Minor surface rot on non-structural elements can be DIY-repaired with retail epoxy products. Structural rot, extensive damage, or rot in critical members should be professionally assessed and repaired.
How quickly does wood rot spread?
Actively growing rot can spread inches per month in favorable conditions (warmth, moisture). Dry rot can remain dormant for years, then accelerate when moisture returns. Don't delay assessment.
Not Sure Which Specialist Is Right for Your Project?
The right company depends on where your rot is, how extensive it is, and whether you need a dedicated specialist or a general contractor who handles rot as part of larger work. Tell us about your project and we'll help match you with the right fit.
Stop Wood Rot Before It Spreads
Wood rot doesn't improve on its own — it only gets worse and more expensive. Get matched with a vetted local specialist and discover how much you can save with expert repair.
Serving all of Greater St. Louis including Clayton, Webster Groves, Kirkwood, Ballwin, Chesterfield, and surrounding areas