How long does it typically take to build a custom deck from start to finish?

A straightforward deck project usually takes one to two weeks of on-site construction once permits are approved, though permitting itself can add several weeks depending on the jurisdiction. Larger decks with multiple levels, built-in seating, or complex railing systems take longer. Weather windows during the wetter months can also affect scheduling.

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

Ask whether they pull permits and handle inspections themselves, what fastener and hardware materials they use by default, and whether they can show you decks they've built in similarly exposed, wet locations. Also ask how they handle ledger flashing, since that's the most common source of hidden water damage. A contractor who can answer these specifically, rather than in generalities, has usually built enough decks in this climate to know what matters.

What's the real difference between traditional composite and capped composite decking?

Traditional composite decking has the same wood-plastic material on all sides, which means the surface can absorb moisture and show mold or mildew over time in a wet climate. Capped composite adds a solid polymer shell around that core, which resists moisture, staining, and fading much better. It costs more but generally needs far less upkeep to stay looking good in a place with this much rain.

Do stainless steel fasteners actually make a noticeable difference on a deck?

Yes — in a salt-air environment, standard coated deck screws can start rusting within a year or two, and corroded fasteners lose their grip strength in the surrounding wood over time. Stainless steel or coastal-rated coated fasteners resist that corrosion and hold their strength for the life of the deck. It's a modest cost increase up front that avoids a real structural weak point later.

Why does moss build up so fast on decks in the Alger area?

The combination of shade, long wet winters, and surfaces that stay damp between storms gives moss exactly the conditions it needs to establish quickly. Decks with tight board spacing, poor airflow underneath, or drainage that dumps water onto the deck footprint tend to develop moss the fastest. Proper spacing, drainage routing, and periodic cleaning slow it down significantly, though no deck in this climate is entirely moss-proof without some seasonal maintenance.

Custom Decks Built for Alger's Salt Air and Rain

Building a Deck in Alger That Actually Holds Up

Alger sits in a part of Skagit County where the weather doesn't do a deck any favors. Homes out here deal with salt-laden air off the water, long stretches of driving rain through fall and winter, and a moss season that seems to start earlier and last longer every year. A deck that would be fine in a drier inland climate can start showing problems within a couple seasons out here — soft spots, rust streaks around fasteners, slick green film on the boards, railings that loosen because the posts are quietly rotting from the inside out.

None of that is inevitable. It's a design and materials problem, not bad luck. When we build a custom deck for a home in Alger, every decision — from the footings to the fastener finish — gets made with this specific climate in mind, not a generic Pacific Northwest average.

What a Correct Deck Build Involves Here

A deck is a structure first and a surface second. The parts nobody sees are what determine whether it's still solid in fifteen years or soft and bouncy in five.

Footings and Framing

Footings need to be sized and set below frost depth and bear on undisturbed, load-tested soil — not just backfill. In areas with persistent moisture, we also pay close attention to drainage around the footing itself so water doesn't pool against the concrete year after year. Framing lumber should be rated for ground contact where it's close to grade, and every cut end gets treated, not just the factory-treated faces.

Ledger Attachment and Flashing

The ledger board — where the deck attaches to the house — is the single most common failure point on older decks in wet climates. If it's not properly flashed and the framing behind the siding isn't sealed against water intrusion, moisture works its way in behind the band board and rots the house framing, not just the deck. We flash the ledger correctly and use self-adhering membrane at every penetration.

Joist Protection

Bare joist tops absorb standing water every time it rains, which in Skagit County is often. Joist tape over the top edge of every joist keeps water from soaking into end grain and shortens drying time between storms — a small material cost that adds years to the structure's life.

Choosing Decking Material for Alger's Weather

There's no single "best" decking material — there's a best fit for your budget, your maintenance appetite, and how close your lot sits to salt air and standing moisture. Here's how the common options actually compare once you factor in this climate.

Material	Upfront Cost	Maintenance	Moisture & Salt Air Behavior	Typical Lifespan
Pressure-treated wood	Lowest	Annual cleaning, periodic sealing	Prone to checking and fastener corrosion if not maintained	10–15 years
Cedar	Moderate	Regular sealing to hold color and resist moss	Naturally rot-resistant but still needs upkeep near salt air	15–20 years
Traditional composite	Higher	Low — occasional washing	Good moisture resistance; some older formulations can hold surface mold	20–25 years
Capped composite / PVC	Highest	Very low — no sealing, occasional rinse	Best resistance to moisture, salt exposure, and moss growth	25+ years

For a lot exposed to salt air with limited sun exposure to dry the surface quickly, we usually steer homeowners toward capped composite or PVC decking despite the higher upfront cost — the maintenance burden of a wood deck in that setting adds up fast, both in time and in the sealing products you'll go through. That said, plenty of Alger homeowners want the look and feel of real wood and are willing to keep up with it, and that's a legitimate choice too as long as you go in with realistic expectations about the sealing schedule.

Railings, Fasteners, and Hardware That Actually Survive Salt Air

Hardware is where a lot of decks quietly fail early, and it's the part most homeowners never think to ask about. Standard coated deck screws can start rusting within a year or two in a salt-air environment, and once a fastener starts corroding it weakens its grip on the wood around it. We use stainless steel or heavy-duty coated fasteners rated for coastal exposure, and where it makes sense, hidden fastener systems that keep metal off the walking surface entirely. Railing hardware — post connectors, brackets, cable rail fittings — gets the same treatment. It costs more than the bargain-bin hardware, but replacing rusted fasteners on a five-year-old deck costs a lot more than not having to.

Drainage and Moss: The Two Things That Determine How Long a Deck Lasts Here

Moss doesn't need much to get established — shade, moisture, and a surface that stays damp longer than it should. On a deck, that usually means boards spaced too tightly, a structure sitting low to grade with poor airflow underneath, or gutters and downspouts dumping water right at the base of the deck. We space decking to allow proper drainage and airflow, keep the structure's underside ventilated where the design allows it, and route roof drainage away from the deck footprint rather than into it. None of this eliminates moss entirely in a Skagit County winter, but it slows it down dramatically and keeps the surface from becoming a slip hazard by December.

Permits and Building Code in Skagit County

Most attached decks and any deck built above a certain height above grade require a building permit locally, and inspections typically check footing depth, ledger attachment, and railing height and spacing before the project is signed off. Requirements can vary depending on your specific parcel and whether you're inside Mount Vernon city limits or in unincorporated Skagit County near Alger, so we don't guess — we pull the permit, handle the inspection scheduling, and build to the code that applies to your address. Skipping this step to save time is a common shortcut that causes real problems at resale, when an unpermitted structure shows up on a home inspection report.

Our Process, Start to Finish

On-site visit — we look at your lot's grading, drainage, sun exposure, and how the deck will tie into the house before we talk materials.
Design and material selection — sized to your space and budget, with an honest conversation about maintenance trade-offs for each material.
Permit and engineering — we handle the paperwork with the applicable jurisdiction so you don't have to chase it down.
Footings and framing — built to spec, with joist tape and proper flashing before any decking goes down.
Decking, railing, and finish work — installed with corrosion-resistant hardware throughout.
Final walkthrough — we go over the finished deck with you, including what maintenance it actually needs going forward.

Maintaining a Deck in a Climate Like This

Whatever material you choose, a little seasonal attention goes a long way toward getting the lifespan you paid for.

Sweep debris out of board gaps before fall rains so water doesn't dam up against damp leaves.
Check fasteners and hardware once a year for rust streaks or loosening.
Wash the surface at least once a year to remove the biofilm that moss and algae take hold in.
Inspect ledger flashing and the area where the deck meets the house for any sign of water staining.
Reseal wood decking on the manufacturer's recommended schedule — don't wait until it's visibly gray and dry.
Keep gutters and downspouts near the deck clear so water isn't discharging onto or under the structure.
Trim back vegetation that's shading the deck and keeping it damp longer than the rest of the yard.

Why Hire a Crew That Already Works in Alger

A contractor who mostly builds inland, drier-climate decks will often spec them the same way they would anywhere else — and that's exactly how a deck ends up with rusted fasteners and a moss-covered surface within a few years out here. We work this part of Skagit County regularly, which means we already know how the local weather patterns behave through the wet months, what materials actually perform near salt air, and how the permitting process works for homes in and around Mount Vernon. That's not a marketing line — it shows up in smaller decisions throughout the build, like where we route drainage, which fastener finish we default to, and how we flash a ledger board on a house that's going to see driving rain for half the year.

If you're planning a new deck or replacing one that's showing its age, we're happy to come take a look and talk through what makes sense for your home. Reach out for a free, no-pressure estimate using the form below.