How long does building a new deck typically take from start to finish?

A straightforward deck project usually takes one to two weeks of on-site work once permits are approved, though weather and inspection scheduling can extend that timeline. Larger or multi-level decks with custom railing take longer. Permit approval itself can add anywhere from a couple weeks to over a month depending on the jurisdiction.

What should I ask a contractor before hiring them for a deck project?

Ask whether they pull permits themselves, what hardware and flashing details they use for wet climates, and whether they carry current liability insurance and workers' comp. Ask to see how they handle ledger board flashing specifically, since that's the most common failure point on attached decks. A contractor who can explain their approach in plain terms, rather than deflecting, is usually the safer bet.

Is composite decking worth the extra upfront cost compared to wood?

It depends on how much ongoing maintenance you want to take on. Composite costs more initially but skips the sealing and staining cycle that wood needs in a rainy climate, while well-maintained wood can look great and last a long time for less money upfront. We can go over both options against your specific budget and site during an estimate.

What's the difference between joist tape and standard flashing, and do I need both?

Joist tape is a self-adhering membrane applied to the top of framing lumber to keep moisture from sitting where fasteners penetrate the wood, while ledger flashing directs water away from the point where the deck attaches to the house. They protect different parts of the structure and both are standard practice on a properly built deck in a wet climate — one isn't a substitute for the other.

Does a deck near Alger really need different construction than one built further inland?

The framework of good deck building doesn't change, but the margin for error does. With the amount of driving rain, salt-influenced air, and shaded moss growth typical to this part of Whatcom County, details like fastener grade, flashing, and drainage spacing matter more here and show up as problems sooner if they're skipped.

Deck Building in Alger, WA — Built for Rain, Salt Air & Moss

Decks Built for the Way It Actually Rains Here

Alger sits in that stretch of Western Washington where the weather doesn't ask permission — long stretches of driving rain off the Sound, salt-laden air working its way inland, and a moss season that can run from October clear through April. A deck built here isn't just outdoor furniture with a view. It's a structure that has to shed water fast, resist corrosion, and keep from turning into a slip hazard every time the temperature drops and the moisture doesn't. We build decks in the Alger area with that reality baked into every decision, not bolted on afterward.

A lot of deck problems we get called out to fix didn't start as bad workmanship — they started as good workmanship for a drier climate. Framing details, fastener choices, and drainage plans that hold up fine in Eastern Washington or inland states fail quietly out here, usually behind the decking boards where you can't see it until it's expensive.

What Rain, Salt Air, and Moss Actually Do to a Deck

Understanding the failure pattern is the whole point of building it right the first time. In this part of the state, decks don't usually fail from one dramatic event — they fail from years of small, unaddressed moisture exposure.

Driving rain gets pushed sideways by wind, which means it hits ledger boards, stair stringers, and the undersides of rail posts that a "straight down" rain would never reach.
Salt-influenced air accelerates corrosion on fasteners, brackets, and any exposed metal hardware — galvanized coatings that would last decades elsewhere can start pitting years earlier here.
Moss and algae take hold on any surface that stays shaded and damp, which on a deck usually means the north side, under furniture, and anywhere drainage is even slightly off.
Standing water in low spots or against end grain is the single biggest driver of rot, and it's almost always a framing or fastening mistake, not a material defect.

None of this is unusual or alarming — it's just what this climate does to wood and metal over time. The fix isn't a special product, it's building with the right sequence, slope, and hardware from the start.

Choosing a Decking Material That Actually Performs Here

There's no single "right" decking material for Alger — there's a right material for your budget, your maintenance appetite, and how much shade your yard gets. Here's how the common options actually behave in this climate, not just on paper.

Material	Upfront Cost	Maintenance in This Climate	How It Handles Moss/Moisture
Pressure-treated pine	Lowest	Needs re-sealing every 1-2 years to stay ahead of moss and graying	Prone to moss in shaded, damp spots if not sealed and cleaned regularly
Cedar	Moderate	Annual cleaning and periodic oiling to keep natural rot resistance intact	Naturally more rot-resistant, but still grows moss without upkeep
Composite decking	Higher	Occasional washing; no sealing or staining required	Resists rot entirely, but can still grow surface algae/moss in shaded areas — needs periodic cleaning
Tropical hardwood	Highest	Requires oiling to prevent checking and graying; installation is less forgiving	Very dense and rot-resistant, but demanding to install correctly in wet conditions

Composite has become popular here for a straightforward reason: it removes the sealing/staining cycle that a rainy, moss-prone climate makes tedious. That said, wood — installed and finished correctly — still performs well and is the right call for a lot of budgets and aesthetics. We'll walk you through the honest trade-offs for your specific site rather than pushing one material across the board.

Framing, Footings, and Fasteners: The Part You Don't See

Most of what determines whether a deck lasts 10 years or 30 is invisible once the decking boards go down. In a climate with this much sustained moisture, we treat a few details as non-negotiable:

Footings sized and set below frost depth and on undisturbed soil, not fill — soggy, saturated ground here punishes footings that were poured on shortcuts.
Joist tape or an equivalent moisture barrier on top of every joist, so fasteners don't sit in a permanent wick point.
Stainless or coated fasteners rated for ground contact and treated lumber, matched to the metal type of any brackets used, to avoid galvanic corrosion accelerated by salt-influenced air.
Joist hangers and structural hardware rated for exterior/coastal exposure, not general-purpose interior-grade hardware.
Proper spacing between boards for drainage and airflow, especially on the shaded side of the structure where moss pressure is highest.

These aren't upgrades — they're the baseline for a deck that's going to sit through Whatcom County winters year after year without hidden rot setting in.

Ledger Board Flashing: The One Detail That Causes the Most Failures

If a deck attached to the house is going to fail, it almost always starts at the ledger board — the piece bolted to the home that the deck framing hangs from. This is the single point where a construction detail failure turns directly into water intrusion behind your siding, not just deck rot.

Done right, the ledger gets a continuous flashing system — usually a metal or self-adhering flashing membrane installed in the correct shingle-lap order with the house's existing water-resistive barrier — so water is directed out and away from the wall assembly, never behind it. Done wrong, or skipped to save an afternoon, it's the most common reason we find rot in wall framing behind an older deck during a remodel or repair. Given how much driving rain this area sees, we don't treat ledger flashing as optional or "good enough with caulk." Caulk fails; proper flashing sheds water by design and keeps working after the caulk is long gone.

Our Deck Building Process

On-site walkthrough: We look at grade, drainage, sun/shade exposure, and how the deck ties into your house before we talk materials.
Design and material selection: We go over the honest trade-offs of wood versus composite, railing options, and layout for your budget and how you'll actually use the space.
Permitting: We handle the permit application and inspection scheduling required for your jurisdiction — most raised decks need one.
Footings and framing: Footings poured to proper depth, ledger flashed correctly, framing built with corrosion-resistant hardware throughout.
Decking and railing installation: Boards and rail systems installed with drainage spacing and fastening appropriate to the material chosen.
Final walkthrough and inspection: We confirm the work passes any required local inspection and walk the finished deck with you before calling the job done.

Keeping Moss and Algae From Taking Over

Even a well-built deck needs some ongoing attention in this climate — the difference is that a properly built one only needs light maintenance instead of structural repair. A few habits go a long way through a long Whatcom County moss season:

Sweep leaves and debris off the deck surface regularly in fall — trapped organic matter holds moisture and feeds moss growth.
Rinse or lightly scrub shaded areas and the undersides of planters at least once during the wet season.
Keep gutters and downspouts near the deck clear so runoff isn't dumping extra water onto the structure.
Reseal wood decking on the manufacturer's recommended cycle — don't wait until it's visibly graying.
Check railing post bases and stair connections annually for standing water or early corrosion on hardware.
Trim back overhanging vegetation that keeps sections of the deck shaded and damp longer than necessary.

Permits and Local Code Considerations

Most raised decks in this region require a building permit, and inspections typically check footing depth, ledger attachment and flashing, and railing/guard height before the project is signed off. Requirements can vary depending on which jurisdiction covers your specific property near Alger, so we confirm exactly what applies to your lot before framing begins rather than guessing. Skipping this step is one of the more common ways homeowners end up with problems at resale — an unpermitted deck can complicate a home sale or insurance claim down the line.

Why Hire a Crew That Already Works in the Alger Area

Deck building isn't exotic work, but building it correctly for this specific climate takes local judgment — knowing how much slope is actually needed for drainage on a rainy site, which hardware holds up against salt-influenced air over a decade instead of a season, and how to sequence ledger flashing so it actually sheds water instead of just looking finished. A crew that already works in and around Alger has seen how decks in this exact climate age, both the ones built right and the ones that weren't, and builds accordingly from the first footing.

We're not interested in cutting corners that only show up as a problem five years from now. If we recommend a detail — flashing, hardware grade, joist spacing — it's because we've seen what happens locally when it's skipped, not because it pads the bill.

Getting Started

If you're planning a new deck or replacing one that's showing its age, we're happy to take a look and give you a straightforward, no-pressure estimate — what it'll take to build it right for your site, your budget, and this climate. Use the form below to get started.