Anacortes Conway sits down in the Skagit River flats, close enough to the water and the flood plain that homes here deal with a specific kind of wear most inland Skagit County properties don't see as much of. If you're weighing a new deck or replacing tired wood boards, composite decking is worth a serious look — but only if it's specified and installed correctly for this ground and this climate. We build decks around Conway and the rest of the Anacortes area, and this page covers what actually matters here: what the local conditions do to a deck, what a correct composite install involves, and what to expect if you bring us in.
Why Conway's Conditions Are Tougher on a Deck Than They Look
Conway isn't right on the salt water the way Anacortes proper is, but it's low, flat, and close enough to Skagit Bay and the river delta that salt-laden air still reaches it, especially on windy days off the water. Combine that with the area's naturally high water table and slower-draining ground, and you get a deck environment that stays damp longer after a storm than a lot of higher, better-drained lots nearby.
Three things define decking conditions in Conway:
- Salt air exposure — lighter than at the immediate waterfront, but persistent enough over years to accelerate corrosion on fasteners, brackets, and any hardware that isn't rated for it
- Driving rain and standing moisture — the flats don't shed water as fast as sloped or elevated ground, so decks here often stay wet longer after weather rolls through, especially near grade
- A long moss and algae season — shaded, low-lying, and slow-drying surfaces in Skagit County can stay damp for months at a stretch, which is exactly the environment moss and mildew need to take hold
None of that makes a deck impossible to build well in Conway. It just means the material choice and the details underneath the decking matter more here than they would on a dry, elevated, inland lot.
Why Composite Makes Sense for This Ground
Wood decking can absolutely be built well, but it asks a lot of a homeowner in a climate like this — annual sealing or staining, close attention to any spot where moisture sits, and a real risk of rot or splintering if that maintenance schedule slips even one season. In a low, damp area like Conway, that maintenance window shrinks fast.
Composite decking (a blend of wood fiber and recycled plastics, capped with a protective outer shell on most modern boards) doesn't absorb water the way solid wood does, doesn't need annual staining, and holds up better against the freeze-thaw and wet-dry cycling that's common in a marine-influenced climate. It won't warp, cup, or splinter the way wood can when it takes on repeated moisture. That doesn't mean it's zero-maintenance — more on that below — but it removes the biggest failure point we see on older wood decks in this area: neglected sealing followed by rot nobody notices until it's structural.
What Composite Doesn't Solve
Composite boards resist moisture absorption into the board itself, but they don't change what's happening underneath the deck. A composite deck built over a poorly ventilated substructure, with undersized joist spacing or without proper flashing where it meets the house, will still trap moisture below the surface — you just won't see the warning signs on top the way you would with wood. That's why the framing and flashing details matter as much as the decking material, maybe more.
What a Correct Composite Deck Build Involves
A composite deck is only as good as what's underneath it. Here's what we consider non-negotiable on any deck we build in Conway or elsewhere in Skagit County:
Ledger and Flashing
Where the deck attaches to the house is the single most common source of hidden water damage on any deck, wood or composite. Correct flashing at the ledger board — installed so water sheds away from the house rather than tracking behind the siding — is not optional. This is where we see the most costly failures on older decks: a ledger that was lag-bolted straight to the wall without proper flashing, quietly rotting the rim joist and wall framing behind it for years.
Joist Framing and Spacing
Composite boards typically require tighter joist spacing than solid wood, especially at angles, stairs, and near the board ends — manufacturer specs vary by product, and following them is what keeps a composite deck from developing bounce or long-term sag. We frame to the decking manufacturer's actual spec, not a generic "close enough" spacing.
Fasteners and Hardware
Given the salt air reaching Conway off the bay and river delta, every fastener, joist hanger, and structural connector on the deck should be rated for coastal or wet-climate exposure — stainless steel or a coated fastener system rated for ground contact and corrosion resistance, not standard hardware that will start rusting and staining the decking within a few seasons.
Ventilation and Drainage Underneath
Because Conway's ground doesn't drain as fast as higher, sloped lots, we pay close attention to under-deck airflow and grading away from the structure. A deck built low to wet ground without adequate ventilation underneath is an invitation for the substructure to stay damp long after the surface has dried — which is exactly the setup that leads to hidden joist and post rot years down the road, hidden by the composite boards on top.
Composite vs. Wood: The Honest Comparison for This Area
| Factor | Composite Decking | Wood Decking |
|---|---|---|
| Moisture absorption | Resists water absorption into the board; won't rot from surface moisture | Absorbs moisture readily; prone to rot without consistent sealing |
| Maintenance | Periodic cleaning; no staining or sealing required | Annual or biannual sealing/staining to prevent moisture damage |
| Moss and algae | Can still develop surface growth in shaded, damp spots; cleans off the cap layer without damaging the board | Moss and mildew can work into the wood grain, harder to fully clean without damaging the surface |
| Splintering/warping | Does not splinter; resists warping and cupping | Can splinter, cup, or warp as it absorbs and releases moisture seasonally |
| Upfront cost | Higher material cost | Lower material cost |
| Long-term cost | Lower over the life of the deck due to minimal maintenance | Higher over time once repeated sealing, repairs, and possible board replacement are factored in |
| Structural framing beneath | Still requires correct flashing, ventilation, and corrosion-rated hardware — the board doesn't compensate for a poorly built substructure | Same requirement — framing quality matters regardless of surface material |
The honest takeaway: composite decking removes one of the biggest maintenance burdens homeowners in this climate deal with, but it's not a substitute for a well-built substructure. Anyone telling you composite decking is truly "maintenance-free" or that it makes flashing and framing details less important isn't giving you the full picture.
Our Process for a Conway Deck Project
- On-site assessment — we look at the actual lot: grade, drainage, sun/shade exposure, proximity to the house's siding and roofline, and existing deck condition if we're replacing one
- Material and layout discussion — we walk through composite board options, color and finish choices, and railing systems that fit the home and budget
- Permitting — most deck projects in Skagit County require a permit depending on size, height, and attachment to the structure; we handle that process rather than leaving it to the homeowner
- Demolition (if replacing an existing deck) — including an inspection of the ledger area and framing underneath for hidden rot before anything new goes up
- Framing — built to the decking manufacturer's spec for joist spacing, with corrosion-rated fasteners and hardware throughout
- Flashing and waterproofing — correct ledger flashing and any necessary membrane work where the deck meets the house
- Decking installation — composite boards installed per manufacturer spacing and fastening requirements, including expansion gaps appropriate for temperature swings
- Railing and finish work — railing systems, stair details, and fascia installed to match the overall design
- Final walkthrough — we go over the finished deck with you, including basic care expectations, before calling the job done
What Ongoing Care Actually Looks Like
Composite decking is genuinely low-maintenance compared to wood, but "low" isn't "none" — especially in a climate that gives moss and algae a long season to establish. A realistic care routine for a Conway deck:
- Sweep off leaves, needles, and debris regularly, especially in fall — trapped organic matter holds moisture against the board surface and speeds up moss growth
- Rinse or lightly scrub the deck a couple of times a year with soap and water to keep moss and algae from establishing, particularly on shaded sections
- Check railing posts and stair connections annually for any looseness — hardware can shift slightly over seasonal temperature swings even when the decking itself is holding up fine
- Keep gutters and downspouts near the deck clear so runoff isn't dumping extra water directly onto or under the deck surface
- Avoid pressure-washing at close range or high pressure, which can damage the cap layer on some composite boards — a soft wash is usually enough
Why It Matters to Hire a Crew That Already Works This Area
Conway isn't a huge community, but its ground conditions — low elevation, proximity to the river delta and bay, slower drainage — are specific enough that a generic deck build doesn't always hold up the way it would on higher, drier ground elsewhere in Skagit County. A crew that's built decks in this area already knows to check the water table before setting posts, already specs corrosion-rated hardware without being asked, and already understands how much airflow a substructure needs to stay dry through a wet Pacific Northwest winter.
We're not going to tell you every deck built here without those details will fail — plenty get by. But we've seen what happens when they don't: rot at the ledger that goes unnoticed for years, rusted hardware staining the decking from underneath, posts settling in ground that never fully dries out. Building it right the first time, with a material and a framing approach suited to Conway's actual conditions, costs less over the life of the deck than fixing those problems later.
Getting Started
If you're considering a new composite deck or replacing an aging wood one in Conway or nearby, we're glad to take a look at your property, talk through material options, and give you a straightforward read on what your specific lot and layout call for. Reach out for a free, no-pressure estimate.