Who Fixes Wood Rot? A Real Guide to Hiring the Right Company

Grab a butter knife or a flathead screwdriver and press it into that soft spot on your windowsill. If it sinks in without much resistance, or the wood crumbles like a stale cracker, that’s rot, and the company you need is whoever shows up, actually pokes at the wood themselves, traces where the water’s been getting in, and writes you a real scope of repair instead of a number scrawled on the back of a business card. Most homeowners freeze right here, phone in hand, not sure if this is a job for a contractor, a carpenter, a roofer, or someone with a scarier-sounding name like “remediation specialist.” It’s a fair question. The honest answer is: several of those, depending on where the rot is and how far it’s spread. Let’s sort out which one is yours.

You’ve found soft wood. Who do you actually call?

I did this exact thing to my own porch railing two summers ago, screwdriver in hand, half hoping it would bounce off solid wood and half already dreading what it would actually do. It sank in about an inch. No resistance at all, just a soft give like pushing into a ripe peach. That’s the moment most people stand there Googling “wood rot repair near me” with no idea whether they’re about to call a general handyman or something more specialized, and whether either one is going to take one look and quote you a number that assumes you don’t know better.

You can skip the diagnosis, that’s the contractor’s job once they’re standing in front of it. What you actually need is a rough sense of which kinds of businesses handle this work at all, because a decent chunk of the confusion is that several different kinds of companies do rot repair, some as a specialty, some as an afterthought, and there’s no single licensed “wood rot” trade to search for.

What kind of company actually fixes wood rot?

The realistic list is shorter than it feels when you’re staring down a search results page. Wood rot repair contractors tend to fall into a handful of buckets, and knowing which one you’re calling changes what you should expect from the visit.

• General contractors take on rot repair as part of broader exterior or remodeling work, especially if the damage is tangled up with a bigger project like a deck rebuild or siding replacement.
• Carpenters and exterior-focused handyman pros are often the best fit for a contained job, a rotted sill, a soft porch post, a window trim piece that’s gone soft at the corners. This is their bread and butter.
• Restoration or remediation companies deal with rot alongside water damage, mold, and structural repair, and they’re usually the right call when the rot showed up after a leak, a flood, or long-term moisture you can’t fully explain yet.
• Roofers are your people when the soft wood is roof-adjacent: fascia, soffits, rafter tails, anywhere the decay traces back to a roofing or flashing failure rather than a ground-level moisture issue.
• Painters and home inspectors are usually the ones who find it first, since soft trim shows up during prep work or a pre-sale walkthrough, but most of them will flag it and hand you off rather than doing the structural repair themselves.

What decides which company is right for the job is where the damage sits and what’s causing it, and a decent estimate visit should sort that out for you instead of you guessing from the driveway.

Do you need a specialist or a good general contractor?

For a single rotted windowsill, a deck board, or a patch of exterior trim, a solid general contractor or exterior carpenter is plenty. This is routine repair work for anyone who does exterior wood regularly, and you don’t need to pay a premium for a company that markets itself as a decay specialist to swap out one board.

Where it’s worth being pickier is when the rot is widespread, structural (think a rim joist, a load-bearing post, framing you can’t fully see), or keeps coming back after a previous “fix.” That’s when you want someone who deals with fungal decay specifically and knows the difference between cosmetic patching and actually stopping the spread. If you’re not sure this is even a hire-someone job, the dry rot repair contractors piece covers that call.

What should happen during the estimate visit?

You can tell a lot about a company in the first five minutes they’re at your house, before a single number gets mentioned. A company that knows what it’s doing does a few things almost automatically, and a company that’s just trying to close a sale skips most of them.

• They touch the wood. They get an awl, a screwdriver, or a moisture meter into it to see how deep the damage goes and how far it spreads past what’s visible from the ground.
• They go looking for the water. Rot doesn’t happen without a moisture source, so someone worth hiring checks gutters, flashing, grade, and sprinklers for anything that could be feeding the problem.
• They check what’s around it. Fungal decay spreads under paint and behind trim in ways you can’t see from your porch. A real inspection includes probing the wood a few inches beyond the obviously soft spot.
• They write it down. A legitimate quote is a scope of work: what’s being removed, what’s being replaced or treated, what happens to the moisture source, and what it costs, put in writing before anyone leaves the driveway.

I’ve talked to enough people who got a “yeah, about $600” shouted from a truck window to know this is the single easiest way to separate the companies worth your time from the ones that aren’t. If nobody’s touching your wood, they’re guessing.

What questions separate a solid company from a drive-by quote?

You don’t need to interrogate anyone, just ask a few plain questions while they’re standing there and see how comfortable they are answering.

• “How did you check for the moisture source?” A real answer names something specific: a gap in the flashing, grading that slopes toward the house, a downspout dumping right at the foundation.
• “Does this quote include finding and fixing the cause, or just replacing the wood?” This is the question that saves you from paying to redo the exact same repair in three years.
• “What’s the warranty on this work?” Reputable companies stand behind rot repair for a defined period. Vague answers here are a soft yellow flag.
• “Are you licensed and insured, and can I see it?” Any established company can produce this without hesitation. Hesitation is the answer.
• “Have you done a job like this before? Got photos?” Most contractors who do this regularly are happy to show you, because they’re proud of it.

None of these questions are gotchas. A company that’s actually good at wood rot repair and inspection answers them without breaking stride, because they’re already doing the work these questions are checking for.

What are the red flags of a company you should not hire?

A few patterns show up again and again with the outfits you want to skip, and once you’ve seen them once you’ll spot them fast.

• A price given without anyone touching the wood or getting closer than the sidewalk.
• No mention of a moisture source at all, just “we’ll fix the wood.”
• Pressure to sign the same day, especially paired with a “today only” discount.
• No license or insurance information offered, or a dodge when you ask directly.
• Vague scope: “we’ll take care of it” instead of a written list of what’s being done.

If you get even one of these from a company, it doesn’t automatically mean they’re a scam, some legitimately fine handyman pros just aren’t great at paperwork. But it does mean you should get at least one more estimate before you commit, especially for anything beyond a small trim repair.

How much should you expect to pay, roughly?

I’ll give you the honest, unglamorous version instead of a number I’m not sure of: it depends enormously on how much wood is affected and whether it’s cosmetic or structural. A small patch of rotted trim or a section of siding is a relatively cheap, contained job. A rotted windowsill climbs into a few hundred to low thousands of dollars territory. Structural rot, framing, sill plates, or anything that’s spread through multiple areas of the house, gets expensive fast, into the kind of number that genuinely hurts to hear.

The price tracks how much wood has to come out, how hard it is to reach, and whether the moisture source itself needs fixing too (a new gutter run costs a lot less than re-flashing a whole roof valley). If you want the full picture of what drives that number up or down, dry rot repair cost gets into the specifics I’m skipping here. What I’ll say plainly: A quote worth taking lists what’s coming out, what’s going back in, and what happens to the water.

Is this actually dry rot, or something else a company should catch?

That porch railing of mine turned out to be wet rot, not dry rot, and I only knew for sure because the contractor got down on one knee and showed me why.

Wet rot needs a steady moisture source to keep going, so it usually smells musty, feels spongy or stringy when you dig a screwdriver into it, and mostly stays put, right where the water’s getting in, instead of spreading far past that spot. Mine smelled like a damp basement and stopped almost exactly where the gutter had been overflowing onto it for two summers straight. Dry rot is rarer and meaner. It can keep creeping through wood, and even across brick or masonry, and it tends to leave a mushroomy smell, a fine powdery dust when you crumble it, and cracking in small cube-shaped chunks well past where the trouble started.

Walking up to my own railing, I’d braced for dry rot, mostly because the name sounds worse and I’d assumed worse news. I was wrong, and the correction actually mattered: a wet rot repair meant pulling the railing and fixing the gutter, full stop. Dry rot would have sent the contractor hunting well beyond what I could see, since it doesn’t stay polite the way wet rot does. A company that knows this work should be able to stand there with you and call which one you’ve got, and it’s worth pushing on if they can’t, because guessing wrong here can mean paying twice: once for the wood, once for the spread nobody looked for.

You can get a head start on this yourself before anyone even comes out. The comparison in dry rot vs wet rot walks through what to look for, cracking patterns, smell, whether the decay stays contained or creeps, so you’re not walking into the estimate completely blind.

What’s the one thing to do before you call anyone?

Take a few photos on your phone right now, before you forget exactly what it looked like or where the soft spots were. Note anything that seems related, a gutter that overflows in heavy rain, a sprinkler head that hits the siding, a spot where paint’s been peeling for a year and you kept meaning to deal with it. That’s the paper trail that helps a contractor find the actual cause instead of just replacing wood and leaving you back here in two years.

And resist the urge to hire the very first name that shows up in a search. Line up two or three estimates, ask the same handful of questions at each one, and see who actually gets down and touches the wood. That’s it. That’s the whole system, and it’s genuinely enough to keep you from getting burned.