Window, Door & Trim Repair in Lake Forest Park, WA
We repair the rot around windows and doors and fix the leak that caused it. Paint cracks at a trim joint, water runs behind the casing, and the sill and framing underneath slowly go soft. We replace rotted sills, jambs and trim with rot-resistant material, add head flashing and sill pans, and keep your windows whenever they are still in good shape. We serve homeowners across Lake Forest Park and nearby Kenmore and Shoreline.
Before
AfterNew siding and trim around the window
Why window and trim repair comes up so often in Lake Forest Park
Window and door trim on shaded Lake Forest Park walls rarely gets a dry day in winter, and wood trim that is not primed on the back side absorbs water and rots from behind. Sliding doors leading onto decks often have rotted thresholds and jamb bottoms. We remove the failed trim and sills, repair the framing underneath, re-flash the openings, and install new exterior trim primed on every face so it can handle the shade and moisture that come with these lots.
Lake Forest Park was laid out as a residential community on the hills above the north end of Lake Washington, and it still feels like a neighborhood built into a forest. Homes range from a few older cottages and 1920s to 1940s houses near the lake to mid-century ramblers, split-levels and contemporaries from the 1950s through the 70s on steep, winding streets. Lots are large and irregular, often sloping sharply toward a creek or the road. Cedar lap siding, board-and-batten and vertical panel siding are common, and many homes have multi-level decks built out over the slope.
Tree cover is the defining condition in Lake Forest Park. Tall firs, cedars and maples shade roofs, siding and decks so heavily that some walls never dry between November and April. Needles and leaves pile into gutters and onto deck boards, and moss grows on anything horizontal. Steep lots send groundwater and surface runoff toward the uphill side of houses, so lower siding and sill plates stay wet. Homes near Lake Washington add morning fog and lake moisture to the mix.
Our crew comes out from our Woodinville office, and we also work in nearby Kenmore, Shoreline, Seattle and Bothell.
When to call about window and trim repair in Lake Forest Park
- Paint failing at trim corners and joints
- Stains on the wall below a window
- Soft or cracked window sills
- Door jambs or thresholds that feel spongy
- Gaps between trim and siding
Our window and trim repair process, step by step
Inspect each opening
We probe sills, jambs and trim and photograph the damage.
Remove the rot
Damaged trim and wood come out back to solid material.
Flash and seal
Flashing tape, head flashing and sill pans where needed.
Install new trim
Trim, sills and jambs installed to match your home.
Finish
Caulked, primed or painted, and cleaned up.
Recent window and trim repair projects near Lake Forest Park
What we do in Lake Forest Park
Garage door trim
Rotted garage door jambs and trim replaced.
Door jambs and thresholds
Rotted jambs and thresholds rebuilt, with a sill pan underneath.
Head flashing
Flashing above windows and doors that sends water outward.
Exterior trim
Casings, corner boards and band boards replaced to match.
Paint-ready finish
Caulked and primed, or painted to match.
Window sills
Rotted sills cut out and replaced with rot-resistant material.
Neighborhoods and permits in Lake Forest Park
Sheridan Heights and Horizon View sit higher on the hills, with steep lots, view decks and wind on the exposed edges. Brookside and homes along Lyon Creek and McAleer Creek sit lower in wooded ravines where shade, moss and runoff dominate. Properties near the Town Center and along Bothell Way are flatter and closer to the lake, with more fog and less slope. Uphill walls on almost any lot here tend to be the wettest side of the house.
Like-for-like repairs on a small scale often don’t need a permit, but structural work, new decks and larger replacements usually do. The City of Lake Forest Park issues building permits, and work near creeks or steep slopes may get extra review. We check with the City of Lake Forest Park before starting so there are no surprises mid-project.
Exterior trim materials
| Trim | Rot resistance | Upkeep | Where it works best |
|---|---|---|---|
| Primed finger-joint pine | Low | Keep painted and caulked | Higher on the wall, protected areas |
| Cedar | Medium | Paint or stain on schedule | Homes with a traditional wood look |
| Engineered trim | High | Repaint roughly every 10 years | Most exterior trim |
| PVC trim | Very high | Occasional washing, optional paint | Sills, near the ground, wet spots |
What window and trim repair typically costs in Lake Forest Park
| Project | Typical scope | Price range | Timeline |
|---|---|---|---|
| One sill or trim piece | Replace a rotted sill or casing and flash it | $500 – $1,500 | 1 day |
| Door jamb and threshold | Rebuild jamb, threshold and add a sill pan | $1,200 – $3,500 | 1–2 days |
| Several openings | Sills and trim on 3–6 windows or doors | $3,500 – $10,000 | 3–6 days |
| Whole-house trim | Trim, sills and flashing around most openings | $10,000 – $25,000+ | 1–3 weeks |
These are typical 2026 ranges we see for window and trim repair in Lake Forest Park 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.
Window & trim repair in Lake Forest Park: cost and timing
Most common causes
No head flashing
Without flashing above the window or door, water runs behind the casing.
Doors without sill pans
Thresholds leak into the jamb and subfloor when there is no pan underneath.
Cracked paint at trim joints
Water gets into the end grain of trim and sills through small cracks at the joints.
What drives the price in Lake Forest Park
Window, door and trim repair in Lake Forest Park is priced per opening and by how far the rot goes into the framing. Replacing a sill or casing is a small job; rot in the framing under a window takes more. You get a written price after the free inspection.
Typical timeline
Most window and door trim repairs take one to two days. Several openings or framing repairs take a few days longer.
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 Lake Forest Park say
“Very responsive, Professional, and provided a competitive quote. Very happy we reached out to him!”
“This concerns the work of a company hired to fix some troublesome spots on our home. They were able to rebuild and refinish a window frame that had deteriorated from weather damage over the years. They did an excellent job. That one fix made the house look…”
“Alex and his team did a great job fixing our siding and bottom door frame which had some rotting. They were professional, competitive in pricing and responsive. Highly recommend Eco Home Repair!”
5.0 average from 106 reviews on Google, Thumbtack, Angi, HomeAdvisor and Yelp. Read our reviews on Google.
Questions Lake Forest Park homeowners ask about window and trim repair
Does Lake Forest Park require permits for deck or structural work?
Can you replace just a rotted window sill in Lake Forest Park?
Do I need to replace the window?
Will you paint the new trim?
Can you fix a door that leaks at the bottom?
More from our crew in Lake Forest Park
Window & trim repair near Lake Forest Park
Tell us about your window and trim repair project in Lake Forest Park
- Licensed, bonded & insured
- Free on-site estimates
- 24-month workmanship warranty
Book a free window and trim repair inspection in Lake Forest Park
We inspect the damage on-site, show you photos of what we find and give you a written price before any work starts.