Deck Waterproofing & Flashing in Lake Stevens, WA
Walkable waterproof coatings, slope fixes and flashing that keep water out of your walls and ceilings. When coatings wear through or flashing is missing at doors and walls, the leak often shows up far from where water gets in. We trace it to the source, replace any wet framing, correct slope and flashing, and finish with a walkable surface that drains away from the house. We serve homeowners across Lake Stevens and nearby Marysville and Everett.
Before
AfterNew siding and trim around the window
Why waterproofing comes up so often in Lake Stevens
Flashing defects are the biggest source of water damage we see on newer Lake Stevens homes. Common misses include kick-outs at roof-to-wall joints, pans under windows and sliding doors, and ledger flashing on decks. Lakefront homes with walk-on decks over living space need membranes that can handle wind-blown spray off the water and long wet stretches. We install or correct flashing at each of these details, apply membrane systems to decks and balconies, and make sure every lap runs the right direction so water drains out rather than in.
Lake Stevens has grown fast, and most of its homes are 2000s–2010s subdivisions spread across Frontier Village, Cavalero and Soper Hill. These are typically two-story houses on modest lots with fiber cement or engineered wood lap siding, vinyl windows, simple gable roofs and pressure-treated or composite decks off the back. Around the lake itself the picture changes: older cabins that were enlarged in stages, mid-century homes with cedar siding, and newer custom builds with big lake-facing decks. Additions on those older shoreline houses often join old and new framing in ways that trap water at the seams.
The lake shapes the weather along the shoreline. Wind travels across open water and throws rain at lake-facing walls, decks and railings, while morning fog sits over the surface and keeps nearby wood damp. Homes on Cavalero and Soper Hill sit higher and take storms from the south and west head-on, and newer plats were often cleared of the trees that once broke the wind. Those cleared lots also leave some walls in full sun and others in constant shade, so paint and caulk wear unevenly.
Our crew comes out from our Woodinville office, and we also work in nearby Marysville, Everett, Snohomish and Arlington.
When to call about waterproofing in Lake Stevens
- Rot or stains under windows and doors
- Stains or drips on the ceiling below a deck or balcony
- Water pooling against the house after rain
- Cracked, peeling or soft deck coating
- A deck that slopes toward the house
Our waterproofing process, step by step
Trace the leak
Moisture readings, inspection openings and photos to find the real source.
Repair the substrate
Rotted plywood, joists or sheathing are replaced before sealing.
Correct slope and details
Proper slope, sill pans and flashing at every edge and door.
Apply the system
Primer, membrane and walkable top coat applied in layers.
Water test
We test the problem areas and show you the finished details.
Recent waterproofing projects near Lake Stevens
What we do in Lake Stevens
Slope correction
Fix flat or back-sloped decks so water drains away from the wall.
Window head flashing
Flashing and tape around windows to stop leaks into the wall.
Leak investigation
We trace leaks to the source before anything is sealed.
Door and sill pans
Pan flashing under doors, where many balcony leaks start.
Walkable deck coatings
Waterproof coating systems for decks and balconies over living space.
Kick-out flashing
Diverts roof water away from the wall at roof-to-wall joints.
Neighborhoods and permits in Lake Stevens
Shoreline homes deal with constant moisture, low decks and aging framing. Frontier Village and the neighborhoods around it are mostly 2000s construction, where flashing defects top our list of findings. Cavalero and Soper Hill sit on higher, more open ground, so wind exposure drives the damage there. Homes near downtown and North Cove mix older houses with infill, and areas east toward Lochsloy include rural lots with shops and outbuildings.
Homes in town fall under the City of Lake Stevens. Like-for-like repairs, such as replacing damaged trim or a handful of deck boards, often don’t need a permit, while structural repairs, new decks and larger siding replacements usually do. Work close to the shoreline may involve extra review, so we confirm requirements with the city before we start.
Deck and balcony surface options
| System | Best for | Expected life | Maintenance |
|---|---|---|---|
| Recoat existing membrane | Sound surface with a worn top coat | A few years per top coat | Keep drains clear, recoat when worn |
| New walkable membrane | Decks and balconies over living space | 10–15+ years | Top coat every few years |
| Membrane under decking | Dry space under a deck with a wood or composite surface | 15+ years | Keep gaps and drains clear |
| Rebuild, slope and membrane | Wet or rotted plywood, flat or back-sloped deck | 15+ years | Top coat every few years |
What waterproofing typically costs in Lake Stevens
| Project | Typical scope | Price range | Timeline |
|---|---|---|---|
| Flashing repair | Kick-out, head flashing or a door pan at one spot | $600 – $2,500 | 1 day |
| Recoat a balcony | Prep and top coat over a sound membrane | $1,500 – $4,500 | 2–3 days |
| New walkable membrane | Full membrane system on a deck or balcony | $5,000 – $14,000 | 4–7 days |
| Rebuild and waterproof | New plywood, slope correction, flashing and membrane | $12,000 – $30,000+ | 1–3 weeks |
These are typical 2026 ranges we see for waterproofing in Lake Stevens 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.
Waterproofing in Lake Stevens: cost and timing
Most common causes
Doors without sill pans
Water that gets under a threshold runs into the subfloor and the room below.
Decks that slope toward the house
Flat or back-sloped surfaces push water against the wall and door thresholds.
Worn deck coatings
Coatings wear through first at doors, edges and posts, and water reaches the plywood underneath.
What drives the price in Lake Stevens
Waterproofing in Lake Stevens depends on the size of the deck or balcony, how much substrate has to be replaced, slope correction and how many doors and walls need new flashing. Recoating a sound surface costs far less than rebuilding a wet one. You get a written price after we trace the leak.
Typical timeline
A recoat over a sound deck usually takes a few days including cure time. Rebuilding plywood, slope and flashing takes about one to two weeks, depending on weather.
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 Stevens say
“One of my windows leaked after I had them cleaned and so I called Eco Home Repair to take a look. I really appreciated the thorough inspection - they determined the leak was unique to the aggressive window washing and wouldn't happen in regular rain (it had…”
“I had a great experience working with Eco Home Repair on a water damage project. Water was leaking into the house through the chimney, which caused mold and water damage issues. Eco Home Repair handled everything smoothly and professionally. They replaced the…”
“Very professional, quick to respond, and able to schedule the work on short notice they treated our home and deck with care and did an excellent job. I would definitely hire them again for a future project.”
5.0 average from 106 reviews on Google, Thumbtack, Angi, HomeAdvisor and Yelp. Read our reviews on Google.
Questions Lake Stevens homeowners ask about waterproofing
Can you repair lakefront decks in Lake Stevens?
Can you coat over my existing deck in Lake Stevens?
What is kick-out flashing?
Do you fix leaks around windows?
How often should a deck coating be recoated?
More from our crew in Lake Stevens
Waterproofing near Lake Stevens
Tell us about your waterproofing project in Lake Stevens
- Licensed, bonded & insured
- Free on-site estimates
- 24-month workmanship warranty
Book a free waterproofing inspection in Lake Stevens
We inspect the damage on-site, show you photos of what we find and give you a written price before any work starts.