Custom marine canvas · Kirkland, WA
Custom Boat Canvas Fabrication
Built for Pacific Northwest weather.
Universal, off-the-shelf boat covers fail in harsh PNW conditions. We hand-pattern every cover to your exact hull and fabricate it in our Kirkland shop using marine-grade Sunbrella® fabric and PTFE thread, so it protects your boat from rain, wind and debris, season after season.
- Sunbrella® marine fabric
- PTFE lifetime thread
- Hand-patterned in Kirkland
- 8–12+ year lifespan
What we build
Three things that make a cover last
Every cover is meticulously patterned to the exact lines of your hull, so it fits tight to the frame, eliminates water pooling, and resists wind-whip damage.
Custom patterning & fit
Every cover is patterned to your hull, not a generic size chart, for a tight, tailored fit that performs like it was built for your boat, because it was.
Marine-grade materials
We use Sunbrella® fabric and high-tenacity PTFE thread that won’t rot under UV exposure, so your canvas keeps its fit and look for years.
Locally fabricated in Kirkland
Patterned on your boat and sewn in our Kirkland shop. You get precision craftsmanship and a local team you can call.
Before & after
See the Williams difference
A worn cover doesn’t just look tired, it stops doing its job. Here’s what a proper re-fabrication looks like.
Full enclosure replacement — Nova 45
Bow & cockpit covers
Shade cover — 52′ Ocean Alexander
Enclosure replacement — Bayliner 2255
Project gallery
Recent fabrication projects
A look at recent custom covers, enclosures and repairs built in our Kirkland shop. See the full set on our photos page.
Start here
Ready to protect your investment? Let’s talk through your project, whether it’s a full enclosure or a single repair.
Is your canvas ready for the season?
Five warning signs to check at the dock
Pacific Northwest weather is hard on marine fabric. If you’re not sure whether you need a patch-up or a full replacement, check for these five signs on your next dockside inspection.
Brittle or thinning fabric
Press on the sun-exposed areas. Stiff, crunchy or paper-thin fabric means the UV inhibitors have broken down and it’s prone to tearing.
Stretching & water pooling
Sagging areas that collect rainwater mean the fabric has stretched, putting real weight on your support poles.
Thread rot & fraying seams
Tug a seam gently. If the thread snaps easily, your seams are failing even if the fabric still looks fine.
Cloudy or cracked windows
Clouding, yellowing or cracked clear vinyl reduces visibility and safety on the water.
Corroded or loose snaps
Loose or corroded snaps let wind catch the edges, which can cause serious wind-whip damage to your hull.
Common questions
Frequently asked questions
How long do custom marine canvas covers last?
Every cover and condition is different, but with premium Sunbrella® fabric and marine-grade thread, covers typically last 8–12+ years with proper care, far longer than a standard boat cover.
What areas do you serve?
Our fabrication shop is in Kirkland, WA, and we proudly serve boat owners across the Greater Seattle area and the Eastside, including Bellevue, Redmond, Woodinville, Kenmore and Renton. For larger projects we regularly travel to marinas throughout King and Snohomish counties.
Because precision covers require exact, hands-on fitment, we travel to your moorage, dry storage facility or driveway so the patterning phase is done right for your specific vessel.
What is the typical turnaround time for a custom cover?
Most fabrications are completed within 2 to 4 weeks of your initial consultation, depending on your boat’s size and the complexity of the design. We pattern on-site, then cut and stitch at our Kirkland shop. We work efficiently, but we don’t rush the craftsmanship.
Demand spikes as boaters prep for the PNW boating season, so we recommend booking during late fall or winter to beat the spring rush.
Can you repair my existing canvas, or do I need a full replacement?
We evaluate every project individually for the most cost-effective, durable solution. If your canvas is structurally sound but has rotted thread, torn seams or cloudy windows, repair can often extend its life by several seasons.
If the fabric itself has gone brittle from UV exposure, or has stretched enough that water pools on top, a full replacement is usually the safer investment. We’ll give you an honest read during your consultation.
What boat owners say
Ready to protect your investment?
Custom fabrication tailored to your vessel. Free consultation, no obligation.