How long does a typical deck building project take from start to finish?

Most residential deck projects in the Conway area take one to two weeks once permitting is complete, depending on size and material. Weather delays are more common in fall and winter, so we build some flexibility into the schedule during our wetter months.

What should I ask a contractor before hiring them to build my deck?

Ask whether they pull the required Skagit County permit, what fastener and hardware grade they use, and whether they're familiar with building for this area's rain and salt air exposure. Also ask for their approach to ledger flashing specifically, since that's the most common failure point on decks in this region.

Is composite decking worth the extra cost over pressure-treated lumber?

It depends on how much maintenance you want to take on. Composite costs more upfront but skips the sealing cycle that pressure-treated wood needs, and in our climate that maintenance savings adds up over the life of the deck.

Why do you recommend stainless or hot-dip galvanized fasteners instead of standard coated screws?

Standard coated fasteners corrode faster in salt-influenced coastal air, which can stain decking and weaken structural connections like joist hangers and post bases over time. Stainless or heavy hot-dip galvanized hardware costs more but holds up much longer in this specific exposure.

Does a deck in Conway need any special design considerations because of the river and lowland setting?

Yes — lower-lying, shaded, or river-adjacent lots tend to stay damp longer, so we pay extra attention to substructure clearance and airflow underneath the deck to prevent trapped moisture and moss buildup. Site drainage and sun exposure both factor into how we frame and space the decking on a given lot.

Deck Building in Conway, WA: Built for Skagit County Weather

Building Decks in Conway: A Different Set of Problems

Conway sits low in the Skagit River delta, close enough to Puget Sound to catch salt-laden air off the water and close enough to the river bottomlands to sit under fog and standing moisture for long stretches of the year. A deck built here has to deal with things a deck in a drier inland town never sees: salt air that accelerates corrosion on fasteners and hardware, driving rain that comes in sideways off frontal systems, and a moss and algae season that can run eight or nine months if the deck isn't detailed to shed water and let air move underneath.

None of that makes deck building in Conway harder in a dramatic way — it just means the margin for error is smaller. A deck that would hold up fine in Wenatchee or Spokane can start showing rot, fastener staining, or slick moss growth within a few seasons here if it's built to a generic spec instead of a Skagit County spec. This page is about what we actually change when we build a deck for a Conway property, and why those changes matter.

What Skagit County Climate Does to an Ordinary Deck

Salt Air and Corrosion

Conway isn't oceanfront, but it's close enough to tidal water and the Sound that salt-bearing air reaches it, especially during winter storms with onshore wind. Salt air speeds up corrosion on any exposed metal — screw heads, joist hangers, post bases, railing brackets. On a lot of decks we're called to repair, the wood itself is still sound but the fasteners have rusted, stained the decking around them, or lost enough strength that railings and stair stringers have gone loose.

Driving Rain

Storms moving through the Skagit Valley often come with wind-driven rain rather than a straight-down soak. That matters for a deck because rain gets pushed sideways into ledger connections, under poorly flashed rim joists, and into any gap where end-grain is exposed. Standing water that ordinary vertical rain wouldn't reach can find its way into joints that weren't designed to handle it.

Moss, Algae, and Prolonged Dampness

Low-lying, shaded, or partially wooded lots around Conway hold moisture longer than open, sun-exposed sites. Combine that with our long wet season and you get conditions where moss and algae establish quickly on any decking surface that doesn't drain and dry well. Beyond being a maintenance nuisance, a mossy deck surface holds moisture against the wood constantly and becomes genuinely slippery — a real fall hazard on stairs and near door thresholds.

What a Correctly Built Conway Deck Actually Involves

Framing and Fasteners

We build framing with fasteners and structural hardware rated for the exposure — stainless or heavy hot-dip galvanized rather than standard coated screws, especially at ledger bolts, post bases, and joist hangers where corrosion failure is a structural issue, not just a cosmetic one. We also match fastener metal to the treated lumber or composite substructure we're using, since mismatched metals accelerate corrosion in damp, salt-influenced air.

Ledger Attachment and Flashing

The ledger board — where the deck attaches to the house — is the single most common failure point we see on older Conway decks, because wind-driven rain gets behind poorly flashed ledgers and rots the house rim joist from the inside out, sometimes for years before it's visible. We flash ledger connections properly with correctly lapped house wrap and flashing so water sheds outward and down, never behind the board.

Decking Material Choice

Every decking material behaves differently in this climate:

Pressure-treated lumber — affordable and structurally solid, but needs consistent gapping, airflow underneath, and periodic sealing to resist the moss and mildew that our damp season encourages.
Composite decking — resists rot and doesn't need sealing, but surface texture matters here — a smooth composite can get genuinely slick once algae forms, so we favor boards with real slip resistance for this climate.
Cedar — a traditional Pacific Northwest choice with natural rot resistance, but still needs airflow underneath and periodic maintenance to keep moss from establishing in its grain.

Substructure Ventilation

Low decks close to grade — common on flatter Conway lots — are especially prone to trapping moisture underneath if the substructure sits too close to the soil or lacks cross-ventilation. We build in the clearance and airflow paths that let the underside dry between rain events instead of staying damp for weeks at a time.

Our Process for a Conway Deck Project

On-site assessment — we look at drainage on the lot, sun and shade exposure, proximity to standing water or low ground, and the condition of the house wall where the deck will attach.
Design and material selection — we walk through decking, railing, and hardware options against your budget and how much upkeep you actually want to do.
Permitting — most decks above a certain height or attached to the house require a Skagit County building permit; we handle that process rather than leaving it to you.
Framing and ledger work — the structural work that determines whether the deck lasts fifteen years or thirty, done with corrosion-resistant hardware and proper flashing.
Decking, railing, and finish work — installed with the gapping and fastening pattern appropriate to the material, so it drains and moves the way it's supposed to.
Walkthrough — we go over basic maintenance specific to what we installed, so you know what to expect in year one versus year five.

Comparing Decking Materials for Conway Conditions

Material	Upfront Cost	Moss/Algae Resistance	Maintenance	Typical Lifespan
Pressure-treated lumber	Lowest	Fair — needs sealing and gapping	Sealing every 2-3 years, regular cleaning	15-20 years with upkeep
Cedar	Moderate	Good naturally, better with sealing	Sealing/staining every 2-4 years	15-25 years with upkeep
Composite	Higher	Good to excellent depending on board texture	Periodic washing, no sealing	25-30+ years

None of these is a wrong answer — the right choice depends on how much maintenance you want to take on versus how much you want to spend upfront. What matters more than the material choice, in our experience, is whether the framing, fasteners, and drainage details underneath were done right for this climate. A good composite deck built on a poorly flashed ledger will still fail at the ledger.

Common Deck Problems We See on Older Conway Homes

When we're called out to look at an existing deck rather than build a new one, the same handful of issues show up again and again:

Rusted or corroded fasteners and joist hangers, especially on decks over ten years old built with standard hardware
Soft or rotted framing near the ledger board, from water getting behind inadequate flashing
Persistent moss and slippery surfaces on low decks with poor airflow underneath
Loose railings and stair stringers from corroded connection hardware
Decking boards cupping or splitting from moisture cycling in and out of the wood

Some of these are repairable in place. Others — particularly ledger rot — are a sign the deck needs to come off the house and be rebuilt properly rather than patched, because a compromised ledger connection is a safety issue, not a cosmetic one.

Sizing and Layout Considerations for Conway Lots

Conway properties vary from tighter in-town lots to larger parcels out toward the river and farmland. Layout decisions we typically walk through with homeowners include how close the deck sits to grade (and therefore how much substructure ventilation it needs), how much of the deck sits in shade from mature trees (which slows drying and increases moss risk), and whether stairs or lower landings need extra attention to slip resistance given how often surfaces stay damp here. None of these are complicated decisions, but they're easy to get wrong if the person designing the deck isn't accounting for local conditions.

Maintenance: What Actually Keeps a Conway Deck Looking Good

Whatever material you choose, a few habits go a long way in this climate:

Sweep debris and standing leaves off the deck surface regularly, especially in fall — trapped organic matter holds moisture and feeds moss growth
Rinse or wash the surface periodically to interrupt algae buildup before it gets established
Check railing and stair fastener tightness once a year, since even good hardware can loosen over time with wood movement
Keep gutters and downspouts near the deck clear so runoff isn't dumping extra water onto or under the structure
Re-seal wood decking on the schedule appropriate to the product — skipping a cycle in our climate costs more than it saves

Why Local Experience Matters for This Job

Deck building isn't exotic work, but building one that holds up specifically in Skagit County's combination of salt air, driving rain, and a long moss season is a different job than building the same deck in a drier part of the state. A crew that already works Conway and the surrounding delta knows which fastener grades actually hold up here, how to detail a ledger connection against wind-driven rain rather than just vertical rain, and which decking textures stay safe underfoot through a wet Northwest winter. That's the difference between a deck that needs real attention again in five years and one that's still solid at twenty.

If you're planning a new deck in Conway or want an honest look at an existing one, we're happy to come out, take a look at your specific site conditions, and walk you through your options. Reach out for a free, no-pressure estimate using the form below.