Decking Replacement · Sumas, WA · Whatcom County
Decking replacement in Sumas, WA — new boards on a frame we've verified.
Sumas decks take nine wet months a year plus the county's hardest outflow wind — and some frames here have stood in floodwater. We replace the decking and railing on structurally sound frames, and flash the house connection like the wall penetration it is.
- ✓ Frame Probed Before Quoting
- ✓ Ledger Flashed to Siding Standards
- ✓ Trex · TimberTech · Fiberon · Cedar
Free Decking Estimate in Sumas
Free on-site assessment — frame inspected, composite and cedar quoted side by side.
Deck Resurfacing on Your Existing Frame
Here's the honest economics of Sumas decks: the boards fail long before the frame does. Cedar decking grays, splinters, and goes soft within 15–20 wet years, while the pressure-treated joists underneath often have decades left. Resurfacing — new decking and railing on your existing frame — captures that difference, typically saving thousands over a full rebuild.
To be clear about what we do: we replace decking on existing, structurally sound frames — we don't build new decks from the ground up. The frame verdict comes first, and in Sumas that verdict includes flood history: a frame that stood in the 2021 or 2025 water gets its posts, joists, and connectors probed with that in mind before we quote a single board. If the structure passes, you get composite-ready spacing corrections and new boards. If it doesn't, we tell you straight — new boards on a rotting frame is the one project we won't sell.
The detail most Sumas decks get wrong is the ledger — the board bolting the deck to your house. Water that gets behind it rots the house wall itself, which turns a deck project into a rot restoration. As a siding contractor, we flash that connection to wall standards, not deck-builder shortcuts.
Decking Brands We Install in Sumas
Three capped-composite lines plus cedar — samples in hand at your estimate, quoted side by side.
Trex Decking
TimberTech Decking
Fiberon Decking
Cedar Decking
Decking Questions From Sumas Homeowners
What Every Decking Replacement Project Includes
No good-better-best games — every project gets the full scope, spelled out line by line in your bid.
If our installation fails, we come back and make it right. The warranty terms are spelled out in your bid — ask us for the current details.
More SWV Services in Sumas
A Deck That Survives Moss Country
A free assessment at your Sumas home — frame probed, composite and cedar quoted honestly.
















