Fixing failing cladding, water damage, and the soft sheathing and framing we find behind it. We replace damaged boards, redo the flashing around windows and roof-to-wall joints, and stop the leak at the source.
Most siding repair calls in Bellingham start the same way: a water mark on an interior wall, a soft spot you can push a screwdriver into, or the finish peeling in one corner no matter how many times it's been redone. The siding is usually the symptom. The real problem is water getting behind it through bad flashing, a failed weather barrier, or a roof-to-wall joint with no kick-out. We pull the affected siding, find where the water is getting in, and fix that, then replace the damaged sheathing, framing, and siding.
On homes from the 60s through the 90s with direct-applied T1-11, hardboard, or face-nailed cedar, the rot behind the cladding is the norm, not the exception. When we open it up we'll show you photos of what's there, soft OSB, black sheathing, damaged framing at the bottom plate, and give you a written change order before we repair anything. This page also covers exterior trim, soffit, and fascia repair, because the leak is often at the edges. The goal is always the same: stop the water, dry the wall, and put it back together right.
What it actually costs.
Siding & rot repair $1,200 to $9,000
ExtentOne wall section vs. several areas
Rot foundHow far the damage runs into sheathing and framing
Flashing redoWindows, kick-outs, and roof-to-wall joints
MatchFinding or matching the existing siding profile
Our four-step process.
Walkthrough & diagnosis
We look at the damage, find the likely water path, and give you a quote. If we can't see the full extent until we open it, we tell you that up front.
Open it up & document
We remove the affected siding, photograph the sheathing and framing, and show you exactly what's behind it before we fix anything.
Fix the cause & the rot
We redo the flashing and weather barrier so water stops getting in, then replace the damaged sheathing, framing, and trim.
Re-side & seal
We put back siding that matches, seal the penetrations, and make sure the repair sheds water the way it should.
Why hire pros for siding and rot repair.
We find and fix the water path, not just the visible board
Photos and a written change order before we repair any rot
Flashing redone at windows, kick-outs, and roof-to-wall joints
Covers exterior trim, soffit, and fascia repair too
Siding matched so the repair blends in
Frequently asked questions.
How much does siding and rot repair cost in Bellingham?
Siding and rot repair in Bellingham usually runs $1,200 to $9,000 depending on how far the damage runs, how much flashing has to be redone, and how hard the existing siding is to match. We give you a quote up front, and if rot turns out to be worse once we open the wall, you see photos and a written change order first.
Why does my siding keep failing in the same spot?
Almost always it's a water path, not the siding itself. Bad window flashing, a failed weather barrier, or a roof-to-wall joint with no kick-out lets water in behind the cladding. We find that path and fix it, then replace the damaged sheathing and siding, so the problem doesn't come back.
Do you repair rot behind the old siding?
Yes. On Bellingham homes with old T1-11, hardboard, or face-nailed cedar, rotted sheathing and framing behind the cladding is common. We open it up, document it with photos, fix the cause, and replace the damaged wood before we re-side the area.
Got a leak or soft spot? Get a free look.
Tell us about your project, we'll reply within 15 minutes during business hours.
We do siding and rot repair across Bellingham and Whatcom County, and we see the most rot on shaded, damp walls in Sudden Valley, Cornwall Park, and Silver Beach, plus the old cores in Columbia and the Lettered Streets. Pick your area: