Deck Waterproofing & Flashing in Marysville, WA
Waterproofing and flashing repair for decks, balconies, windows and roof-to-wall joints. 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 Marysville and nearby Lake Stevens and Arlington.
Before
AfterNew siding and trim around the window
Why waterproofing comes up so often in Marysville
Flashing is where Marysville’s fast-built neighborhoods most often fall short. Missing kick-outs at roof-to-wall joints send water straight down the wall, and windows set without sill pans leak into the framing below. Ledgers that were never flashed let rain into the rim joist. We install kick-out flashing, ledger flashing with correct laps, and sloped pans under windows and doors. For covered decks and walk-on balconies we apply waterproof membranes with clean transitions at the wall, so wind-driven rain off the flats has nowhere to go but down and out.
Marysville grew from a small mill and berry-farming town into one of Snohomish County’s larger cities, and its housing shows that path. Around downtown and the older streets near Comeford Park you find modest early and mid-century homes with lap siding, small porches and plenty of patched trim. Most of the city, though, is 1990s–2010s subdivisions on Sunnyside, Getchell Hill and out toward Lakewood and Smokey Point, built quickly on compact lots with hardboard, early fiber cement or vinyl siding, pressure-treated decks and tall two-story walls with short eaves. Newer infill on the east side adds townhomes and tight lots with narrow side yards that get little sun.
The western edge of Marysville is low, flat ground along Ebey Slough and the Snohomish River delta, and storms cross it with nothing to slow them down. South and southwest walls catch rain driven nearly sideways, which finds every open butt joint and missing kick-out. Up on Getchell Hill and the Sunnyside plateau the wind is stronger still, while fog hanging over the slough keeps lower siding and deck framing damp into spring. Short overhangs leave many walls unprotected, so paint fails early and the wood beneath it stays wet.
Our crew comes out from our Woodinville office, and we also work in nearby Lake Stevens, Arlington, Everett and Snohomish.
When to call about waterproofing in Marysville
- Cracked, peeling or soft deck coating
- A deck that slopes toward the house
- Streaks down the wall below a roof edge
- Water pooling against the house after rain
- Stains or drips on the ceiling below a deck or balcony
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 Marysville
What we do in Marysville
Slope correction
Fix flat or back-sloped decks so water drains away from the wall.
Door and sill pans
Pan flashing under doors, where many balcony leaks start.
Leak investigation
We trace leaks to the source before anything is sealed.
Window head flashing
Flashing and tape around windows to stop leaks into the wall.
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 Marysville
Homes near Ebey Slough and the Kellogg Marsh area sit low and deal with more ground moisture, so sill plates and deck posts get our attention there. On Getchell Hill, wind is the bigger issue, especially on view-side walls. Sunnyside mixes older acreage homes with newer plats, while Lakewood and Smokey Point are dominated by 2000s–2010s construction where flashing shortcuts are the usual culprit. Downtown’s older houses tend to hide rot under decades of paint.
For homes inside city limits we work with the City of Marysville. Small like-for-like repairs, such as swapping a few rotted siding boards, often don’t need a permit, but rebuilding framing, adding a deck or re-siding a whole wall usually does. We check with the city before starting, and homes just outside the limits fall under Snohomish County instead.
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 Marysville
| 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 Marysville 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 Marysville: cost and timing
Most common causes
Doors without sill pans
Water that gets under a threshold runs into the subfloor and the room below.
Missing kick-out flashing
Roof water runs down the wall instead of into the gutter and soaks the siding and framing.
Worn deck coatings
Coatings wear through first at doors, edges and posts, and water reaches the plywood underneath.
What drives the price in Marysville
Waterproofing in Marysville 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 Marysville say
“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.”
“I hired Eco Home Repair to do a leak repair under my balcony, deck waterproofing and slope correction, and underlying rot repair. They were professional, quick, and fairly priced; kept me in the loop throughout the whole process and was honest about what…”
“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…”
5.0 average from 106 reviews on Google, Thumbtack, Angi, HomeAdvisor and Yelp. Read our reviews on Google.
Questions Marysville homeowners ask about waterproofing
Why is my 2000s Marysville home already showing rot?
Can you coat over my existing deck in Marysville?
How long does a deck coating last?
Why is water leaking under my deck or balcony?
Can you waterproof a deck over a living space?
More from our crew in Marysville
Waterproofing near Marysville
Tell us about your waterproofing project in Marysville
- Licensed, bonded & insured
- Free on-site estimates
- 24-month workmanship warranty
Book a free waterproofing inspection in Marysville
We inspect the damage on-site, show you photos of what we find and give you a written price before any work starts.