Deck damage can range from cosmetic stains to structural rot, and the contractor you hire determines whether your repair lasts five years or fifteen. Asking the right questions upfront saves you from overpaying, getting mediocre work, or discovering hidden problems mid-project. Here's what to request and clarify when collecting deck repair quotes.
Assess the Scope of Damage
Before calling contractors, walk your deck with a screwdriver and probe soft or discolored wood—contractors will do the same, but understanding the extent helps you recognize realistic quotes. Ask each contractor specifically:
- How much of the deck structure needs replacement versus repair?
- Is the damage limited to boards, or does the substructure (joists, ledger board, footings) show rot?
- Will they remove and replace only the affected sections, or do they recommend full-deck resurfacing?
A contractor charging $2,000 to replace two rotted joists is reasonable; one charging $8,000 for the same job without explanation is overselling. Legitimate contractors will point to soft spots, show you photos of damage, and explain why each component needs work.
Understand Repair vs. Staining Costs
Deck repair and staining are often bundled, but contractors should quote them separately so you know what's driving the price.
Repair costs typically run $300–$800 per structural beam or joist replacement, $150–$400 per deck board, and $200–$600 for ledger board issues (which are critical for safety). Labor rates hover around $50–$100 per hour in most regions, though urban areas often run higher.
Staining and sealing range from $1–$3 per square foot for basic clear sealant to $3–$8 per square foot for solid-color or semi-transparent stains. A 400-square-foot deck typically costs $400–$3,200 to stain, depending on product quality and prep work required.
Ask contractors whether they'll stain repaired sections to match the rest of the deck, and if that's factored into the quote. Mismatched staining is a common complaint after repairs.
Ask About Timeline and Preparation
Your deck won't be usable during work, so logistics matter. Request:
- How long will the total project take (repair + staining)?
- Will they do everything in one visit, or split it across multiple days?
- What's their timeline—are they scheduling two weeks out or two months?
- Do they handle surface prep (power washing, sanding), or is that a separate charge?
Most deck staining jobs take 3–7 days total (including drying time between coats), but repair work can extend that by a week or more if structural damage is present. Reputable contractors will give you a written timeline with realistic start and completion dates.
Verify Materials and Warranties
The stain or sealant brand makes a real difference in durability. Ask:
- What brand and type of stain do they use (semi-transparent, solid, water-based, oil-based)?
- How often will you need to restain (typically every 2–3 years for semi-transparent, 3–5 for solid stains)?
- Do they offer a warranty on their work and on the materials?
- Will replacement boards or repaired joists be pressure-treated, cedar, composite, or something else?
A contractor who specifies materials upfront and backs their work with a 1–3 year warranty on stain adhesion shows confidence. Ask for references from jobs they completed in the past 18 months so you can see how the stain has held up.
Insurance and Licensing
Never skip this step. Request:
- General liability and workers' compensation insurance (ask for proof; a one-page certificate isn't enough—get a full acord form from their insurer).
- State contractor license number and verification that it's current and in good standing.
- Any complaints filed with your state's attorney general or local better business bureau.
A contractor without insurance or licenses is exposing you to liability if someone gets hurt on your property. This isn't negotiable.
Get Everything in Writing
Once you've narrowed down contractors, ask each one to provide a written estimate that includes: materials used, labor hours or rate, prep and disposal costs, stain/sealant product name, warranty terms, and start/end dates. Compare three quotes side by side—if one is drastically lower, ask why.
Platforms like Mercoly let you compare and find trusted deck repair and staining providers in one place, making it easier to vet multiple contractors at once.
Frequently Asked Questions
Q: How do I know if my deck needs repair or just staining? If wood feels soft when you press a screwdriver into it, or if boards are cracked and splintering, repair is necessary; surface discoloration alone usually just needs cleaning and restaining.
Q: Should I repair or replace the entire deck? Structural issues (rotted joists, failing ledger board) require immediate repair; cosmetic wear is restainable; if more than 30% of boards or framing needs replacement, full deck replacement sometimes costs less than extensive patching.
Q: How often does a sealed and stained deck need re-staining? Semi-transparent stains last 2–3 years, solid stains 3–5 years, and clear sealers 1–2 years depending on weather exposure and foot traffic.
Start collecting quotes today to compare real prices and timelines for your specific deck condition.