Seattle’s premier trim & dry rot repair siding contractor
Exterior Trim, Siding & Dry Rot Repair in Seattle
Rain, shade, and marine air take a Pacific Northwest exterior apart from the outside in. We find where water is getting behind your siding and trim, cut out everything the rot has reached, and rebuild the wall so the same corner stops failing every few years.
Ballard-based · King, Snohomish & Pierce County · Mon–Fri, 7:00am – 5:00pm
- We trace the leak back to its source instead of caulking over it.
- Rot comes out past the damage line, then the wall gets rebuilt — not patched.
- James Hardie® fiber cement, Western Red Cedar, and LP SmartSide®.
One corner, before and after · dry rot at a water-table joint
Get your free estimate
Tell us what is going on with your trim, siding, or rot and we will get you a free estimate — most jobs are scheduled the same week.
Free 15-point dry rot inspection · Free estimates.
See why Seattle homeowners trust us with their exterior
Unedited screenshots, captured straight from the Google Business Profile. Nothing has been retyped, trimmed, or filtered — open the listing on Google to read them there.
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What we do
Four ways we keep water out of your walls
Most jobs start as one soft board and end somewhere behind the siding. Whichever door you come in, the work is the same: find the source, remove what has failed, and rebuild it with something that survives this climate.
Siding Repair
Surgical repairs that restore your home's protective envelope.
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Exterior Trim Repair
Restoring the critical seals that protect your home's envelope.
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Dry Rot Repair
Eradicating the fungal threat that destroys your home's structure.
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Siding Installation
A meticulous process that delivers lasting protection and beauty.
See the detailsThe Pacific Northwest problem
Why Seattle homes rot from the outside in
More than 150 rain days a year, marine air off Puget Sound that keeps humidity high long after the rain stops, and a tree canopy dense enough that north-facing walls can stay damp for weeks. Wood does not fail here because of one storm. It fails because it never gets enough consecutive dry days to recover.
That is why a hairline gap at a window casing is not cosmetic. Water travels behind the trim into the sheathing and framing, where nobody sees it until a wall feels soft or paint stops holding. We have spent 20+ years working on exactly these walls, which is why the first thing we do is find the water — not the fastest board to replace.
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Rot in exterior wood
Rain works into end grain, nail holes, and open joints, and the wood never gets enough dry days to recover. The fungus behind dry rot needs that moisture to start, then keeps eating the cellulose long after the wall has dried — leaving soft, crumbling spots and a squared-off, cubical cracking pattern.
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Water-damaged fascia and casings
Dark streaks under a window or a sill that feels soggy mean water is sitting where it should not. When fascia rots it stops holding the gutter, the gutter sags, and the overflow starts running straight down the wall it was meant to protect.
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Warped and cupped boards
Temperature swings distort trim that is already carrying moisture, especially in flat, shaded, fog-holding pockets like Fremont and on the wind-exposed slopes of Magnolia. Bowed or bubbling siding usually means water is trapped behind the panel, not on it.
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Weather-driven failures
Wind gets behind panels that were never nailed correctly and tears them loose. Blocked or decayed soffits shut down attic airflow, so heat builds in summer and ice dams form in winter. Both start as small breaches and end as sheathing repairs.
Recent work
Real projects on real Seattle homes
Fascia and soffit rebuilds, cedar soffits, shingle and lap siding, walls opened up and put back square. Every photo here came off a job site — none of it is stock.
The full siding replacement on a Ballard craftsman is written up start to finish, from the first probe to the last corner board.
Not sure whether it is rot or just old paint?
Describe what you are seeing — a soft sill, a dark streak under a window, siding that moves when you push it — and we will tell you whether it is a patch, a section, or something structural before anyone comes out.
Mon–Fri, 7:00am – 5:00pm
Service areas
Six cities across Puget Sound
King, Snohomish & Pierce County, run out of the Ballard office at 8338 20th Ave NW. Pick your city and service, or jump straight to your Seattle neighborhood.
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Seattle
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Bellevue
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Kirkland
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Redmond
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Bothell
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Tacoma
What we rebuild with
Three materials that hold up here
What we specify depends on the wall, the exposure, and how the rest of the house is detailed. These three are what we put back on Puget Sound exteriors, and each behaves differently once the wet season starts.
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James Hardie Fiber Cement
A composite of cement, sand, and cellulose fibers engineered to resist rot, pests, and fire. The gold standard for durability in wet Pacific Northwest climates.
Fiber Cement details -
Western Red Cedar
The classic choice for Pacific Northwest homes. Cedar contains natural oils that resist rot and insects, delivering authentic warmth and elegance that synthetic materials cannot replicate.
Cedar details -
LP SmartSide Engineered Wood
Wood strands and resins treated with zinc borate for superior rot and pest resistance. Combines the authentic beauty of wood with modern durability and lower maintenance than cedar.
Engineered Wood details
$200 off any siding or trim repair over $2,500
Mention this page when you call or request your estimate. It comes off the quoted price for qualifying siding and trim repairs — the inspection and the estimate are free either way, whether or not the job ends up over that threshold.
Same-week scheduling · Licensed and insured
Tell us what is failing
Free tool
Sketch the cost before anyone comes out
Tell it what the trim is made of, how far the damage runs, how hard the wall is to reach, and whether the repair has to disappear under paint. The calculator returns a working range. It is a starting point, not a quote — the real number comes after we open the wall and see what the water actually reached.
- Material — fiber cement, cedar, engineered wood or vinyl.
- How far the damage runs once the trim comes off.
- Access: ground-floor casing or second-storey fascia.
- Paint and finish work, if the repair needs to disappear.
From the blog
Recent guides
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Top 5 Durable Siding Options for Seattle Homes
James Hardie fiber cement, cedar, and LP SmartSide lead for Seattle durability. Compare lifespan, maintenance, and moisture resistance for wet climates.
Read the guide -
Does Homeowners Insurance Cover Siding Repair in Washington?
What siding damage is covered by homeowners insurance in WA? Learn what's covered, how to file claims, and how to avoid storm chaser scams.
Read the guide -
How to Choose a Siding Contractor in Seattle: 10 Questions
10 essential questions to ask before hiring a siding contractor in Seattle. WA licensing, insurance, red flags, and what good answers look like.
Read the guide
Questions Seattle homeowners ask first
What counts as exterior trim, and what do you actually repair?
How do I tell weathered paint from actual dry rot?
Can my siding be repaired, or does the whole wall need replacing?
How do you price a repair?
Which cities and Seattle neighborhoods do you cover?
Coverage
Where we work
The shaded area is the service map we actually drive: Seattle and North Seattle, the Eastside through Bellevue, Kirkland, Redmond and Bothell, and south to Tacoma.
The office
Find us
We run out of Ballard, which is why north-end jobs usually get scheduled fastest. Estimates are free anywhere on the coverage map.
Our Ballard office
8338 20th Ave NWSeattle, WA 98117 (425) 517-1751
- Hours
- Mon–Fri, 7:00am – 5:00pm
- Price range
- $$
- Serving
- King, Snohomish & Pierce County
Get the rot looked at before the wall behind it goes
Send a few details or call and describe what you are seeing. We will tell you what it is, what it takes to fix, and what it costs — before anything gets torn off.
Mon–Fri, 7:00am – 5:00pm · Free estimates · Same-week scheduling