Siding Repair in Mercer Island, WA
Siding repair and replacement with the house wrap and flashing done right behind it. When boards crack, swell or pull loose, water has usually been reaching the sheathing for a while. We open the wall, repair what is behind it, add the flashing that was missing and install siding matched to your house, so the repair blends in and the wall stays dry. We serve homeowners across Mercer Island and nearby Bellevue and Seattle.
Before
AfterNew lap siding and trim
Why siding repair comes up so often in Mercer Island
Cedar lap siding on older Mercer Island homes, especially in East Seattle and Mercerwood, often splits, cups and rots along the bottom courses and at corners. Newer homes with fiber cement or mixed cladding can develop problems at panel joints and transitions when flashing was not detailed correctly. Once the bad boards are off, we repair any soft plywood, lap fresh house wrap over it, and put up cedar or fiber cement in the original profile. Every transition at roofs, decks and windows gets proper flashing, and new boards are primed on all sides before installation to stand up to island weather.
Mercer Island’s homes range from 1940s and 50s cottages in East Seattle and the North End to mid-century ramblers in neighborhoods like Mercerwood, and many large newer houses built on the island’s slopes and shoreline. Older homes often have cedar or wood lap siding, while newer ones use fiber cement, stucco or mixed cladding. Lots tend to be sloped and wooded, with daylight basements and decks that step down toward Lake Washington views. Waterfront homes along East and West Mercer Way often have docks, boathouses and multi-level terraces.
Surrounded by Lake Washington, Mercer Island gets wind from almost every direction depending on the storm, and lake-facing walls take wind-driven rain. Steep, wooded slopes keep many homes shaded and damp, and dense trees around Pioneer Park and along the Mercer Ways drop needles that clog gutters. Long wet winters mean wood rarely dries out between fall and spring. Large windows and decks oriented toward the water are the most exposed parts of most homes.
Our crew comes out from our Woodinville office, and we also work in nearby Bellevue, Seattle, Medina and Kirkland.
When to call about siding repair in Mercer Island
- Boards that are cracked, warped, loose or missing
- Paint that fails on one wall year after year
- Stains or water marks inside, below windows
- Soft or rotted siding near the ground, windows or roof lines
- Gaps at corners, butt joints or trim
Our siding repair process, step by step
Inspect the wall
We check the siding and probe the sheathing behind it at the problem areas.
Plan the scope
Repair a section or replace a wall: we show you the options with prices.
Open and repair
Old siding comes off; rotted sheathing and framing are replaced.
Wrap and flash
New house wrap, flashing tape at windows and kick-out flashing at roof lines.
Install and finish
New siding and trim, caulked and primed or painted, site cleaned.
Recent siding repair projects near Mercer Island
What we do in Mercer Island
Cedar siding and shingles
For homes that need to keep their original look.
House wrap and flashing
New weather barrier and window flashing behind the siding.
Siding repair
Replace damaged or rotted boards and match the profile and paint.
Trim and corner boards
New trim, corners and casings that shed water.
Fiber cement siding
Durable lap and panel siding that resists rot, insects and fire.
Full re-siding
Strip, wrap, flash and install new siding on one wall or the whole house.
Neighborhoods and permits in Mercer Island
North End homes near I-90 and Luther Burbank Park include many older houses with original siding and small decks. East Seattle and the west side face Seattle across the lake, catching weather on west walls. Mercerwood and the central island have mid-century homes under heavy tree cover. The South End and properties along East Mercer Way sit on steep, wooded slopes where tall decks and daylight basements are common.
Patching small areas of trim, siding or decking with identical material rarely needs a permit. Steep-lot deck rebuilds, structural work and larger replacements usually call for one. The City of Mercer Island handles that review, and we confirm the requirements with them up front, submit what is needed, and keep inspections on the calendar.
Siding materials compared
| Siding | Typical life here | Upkeep | Good to know |
|---|---|---|---|
| Fiber cement | 30–50 years | Repaint roughly every 10–15 years | Will not rot, fire-resistant, heavy to install |
| Cedar | 20–30 years with care | Paint or stain every 5–8 years | Beautiful, but needs regular care in our rain |
| Engineered wood | 25–30 years | Repaint roughly every 10 years | Lighter than fiber cement, treated against rot |
| Vinyl | 20–30 years | Wash once a year | Low cost, can crack in cold and fade in sun |
What siding repair typically costs in Mercer Island
| Project | Typical scope | Price range | Timeline |
|---|---|---|---|
| Patch repair | A few boards and the wrap behind them | $800 – $3,000 | 1–2 days |
| One wall | Strip, wrap, flash and re-side one elevation | $5,000 – $15,000 | 3–6 days |
| Several walls | Two or three elevations with trim and flashing | $15,000 – $30,000 | 1–2 weeks |
| Whole house | Full re-side in fiber cement or engineered wood | $30,000 – $65,000+ | 2–4 weeks |
These are typical 2026 ranges we see for siding repair in Mercer Island and nearby cities. Your price depends on what we find once the area is open, access and height, and the materials you choose. Every estimate is free, in writing and based on an on-site inspection with photos.
Siding repair in Mercer Island: cost and timing
Most common causes
Unsealed ends and joints
Cut ends and butt joints that were never sealed swell, crack and let water in.
Missing flashing at openings
Windows, doors and roof edges without flashing send water behind the siding.
Old or torn weather barrier
Felt paper and house wrap wear out, so water that gets past the siding reaches the sheathing.
What drives the price in Mercer Island
Siding repair in Mercer Island depends on the material, the size of the area, how much sheathing behind it is damaged, how high the wall is and how many windows and corners need flashing. A section repair is a fraction of the cost of re-siding a wall. You get a written price after the free inspection.
Typical timeline
A small patch is often finished in a day or two. Re-siding one elevation usually takes several days, and a whole house can run from about a week to three weeks.
Backed by a 24-month workmanship warranty
Written scope
You know exactly what is included before work starts, with photos of what we found.
Our own crew
The people who quote your job are the people who do it, start to finish.
Clean site daily
Debris is hauled away and your yard is left the way we found it.
24 months covered
If our workmanship fails within two years, we come back and make it right.
What homeowners near Mercer Island say
“We're extremely pleased with the work Alex and the team completed on our home. They gave the entire exterior a fresh new look with new siding, renovated our front porch, and built an additional side porch and back deck. They also replaced several of our…”
“We're extremely pleased with our new siding and couldn't be happier with the final result. All workers were professional, courteous and very easy to work with from start to finish. They handled the installation carefully and made sure every detail was done…”
“Alex is very friendly and fast in responding to our questions. I contacted Eco Home Repair and Alex showed up the next day to give us an estimated cost. Once we signed the contract, he immediately scheduled the time and date with us to replace our siding and…”
5.0 average from 106 reviews on Google, Thumbtack, Angi, HomeAdvisor and Yelp. Read our reviews on Google.
Questions Mercer Island homeowners ask about siding repair
Is access a problem for repairs on narrow Mercer Island driveways and steep lots?
Can you match my existing siding in Mercer Island?
Do you replace the house wrap too?
Should I repair or replace my siding?
Which siding is best for Pacific Northwest weather?
More from our crew in Mercer Island
Siding repair near Mercer Island
Tell us about your siding repair project in Mercer Island
- Licensed, bonded & insured
- Free on-site estimates
- 24-month workmanship warranty
Book a free siding repair inspection in Mercer Island
We inspect the damage on-site, show you photos of what we find and give you a written price before any work starts.