How long does it typically take to build a deck?

A straightforward deck project usually takes anywhere from a few days to a couple of weeks once construction starts, depending on size, railing complexity, and weather. Permitting timelines beforehand can add more time and vary by jurisdiction. We give you a realistic schedule specific to your project before work begins, not a generic estimate.

What questions should I ask before hiring a deck contractor?

Ask whether they're licensed and insured, whether they pull permits themselves, what fastener and hardware grade they use, and whether they'll put the scope of work in writing. A contractor who hesitates on any of those is worth a second look. It's also fair to ask how they handle ledger flashing and drainage, since that's where most long-term deck problems start.

Is composite decking worth the extra cost over wood?

For many homeowners in this climate, yes — composite and PVC decking eliminate the rot risk that wood carries and need less upkeep over time. But a well-built and properly maintained wood deck is still a solid, more affordable choice for the right homeowner. It comes down to your budget and how much maintenance you want to take on.

What kind of fasteners and hardware should be used on a deck in this area?

Stainless steel or hot-dip galvanized fasteners and joist hangers hold up far better against corrosion here than standard electro-galvanized hardware. This matters more the closer a property sits to salt-influenced air. It's a small cost difference upfront that avoids a much bigger repair down the road.

Do I need a permit to build a deck in the Alger area?

Permit requirements depend on the deck's height, size, and attachment to the house, and they're set by the local building jurisdiction rather than being the same everywhere. Many decks above a certain height or attached to the home do require a permit and inspection. We handle figuring out what applies to your specific project as part of the planning process.

Deck Building in Alger: Built for PNW Rain, Moss & Salt Air

Building Decks for Alger's Weather, Not Against It

A deck in Alger lives outside year-round, and this part of Western Washington doesn't go easy on outdoor structures. Salt-tinged air moving in off the water, long stretches of driving rain, and a moss season that can run for months put real stress on framing, fasteners, and decking surfaces. A deck built the same way you'd build one in a dry inland climate will show problems here faster than most homeowners expect — soft spots at the ledger, black streaking on boards, corroding hardware, and slick, moss-covered surfaces by the second or third winter.

None of that is inevitable. It's a function of material choice, fastener grade, and how the deck is detailed to shed water instead of holding it. This page is about what a deck built specifically for the Alger area needs to hold up — not a generic overview of deck building, but what actually matters when the structure has to survive this climate for decades.

What This Climate Actually Does to a Deck

It helps to understand the failure points before talking about the fix. Three things drive almost every deck problem we see in this area:

Driving Rain and Trapped Moisture

Rain here rarely falls straight down — wind pushes it sideways into ledger connections, under poorly flashed rim joists, and into any gap where end grain is exposed. Wood doesn't rot because it gets wet; it rots because it stays wet. A deck with no drainage gap between boards, no flashing behind the ledger board, or no way for water to escape the frame will trap moisture against the wood for days after a storm passes.

Salt Air and Metal Corrosion

Even a few miles inland, moisture carrying salt content accelerates corrosion on anything less than a properly rated fastener. Standard electro-galvanized screws and joist hangers can start showing rust streaks within a couple of seasons in this kind of air, and once a fastener starts to corrode, its holding strength drops long before it looks obviously bad.

Moss, Algae, and Slick Surfaces

Shade, moisture, and mild temperatures are exactly what moss and algae need to take hold, and a lot of decks around here have both. Horizontal wood surfaces that don't get much sun or airflow — under trees, on the north side of a house — grow a moss film that isn't just cosmetic. It holds moisture against the board and makes the surface genuinely dangerous to walk on when wet.

Decking Material Comparison for This Area

There's no single "best" decking material — there's a best material for how a given deck is shaded, how much upkeep the homeowner wants to do, and what budget makes sense. Here's how the common options actually perform in Alger's conditions:

Material	Moisture & Moss Resistance	Maintenance Needed	Notes for This Climate
Pressure-treated fir/hem-fir	Fair — needs sealing to perform	Annual cleaning, periodic sealing	Lowest upfront cost; most exposed to moss buildup if not maintained
Cedar	Good — naturally rot-resistant	Cleaning and occasional oiling to hold color	Handles moisture well but still needs surface care to resist moss film
Composite (e.g. Trex, TimberTech)	Very good — won't rot	Periodic washing to clear surface algae	Won't absorb water into the board, but moss/algae can still grow on the surface film and needs washing
PVC/capped polymer	Excellent	Lowest — occasional rinse	Most resistant to moisture and staining; highest material cost

Composite and PVC decking have become popular in this region for good reason — they take the wood-rot question off the table entirely. That said, we still install wood decks regularly, and for the right homeowner, a well-built and properly maintained cedar or treated deck is a perfectly sound choice. Our job is to lay out the real trade-offs, not steer everyone toward the most expensive option.

What a Correctly Built Deck Involves Here

Whatever decking surface you choose, the parts you don't see are what determine whether the deck lasts. A deck built correctly for this climate includes:

Ledger board flashing that directs water away from the house rim joist, not just a bead of caulk
Footings sized and set to local frost depth and soil-bearing requirements
Joist tape or an equivalent moisture barrier on top of framing lumber to stop end-grain water absorption
Stainless steel or hot-dip galvanized fasteners and hardware rated for the corrosion exposure in this area — not standard electro-galvanized
Consistent board spacing that allows water to drain through rather than pool on the surface
Guardrails, stair stringers, and baluster spacing built to current code, not just what looks close enough
Ventilation underneath the deck so airflow can dry out framing after rain instead of leaving it damp for days

Skip any one of these and the deck may look fine for a year or two before the problems show up underneath — usually right around the time it's expensive to fix.

Our Deck Building Process

Site Visit and Design

We start by looking at the actual site — sun exposure, tree cover, drainage patterns, and how the deck ties into the house. Shaded, north-facing decks near mature trees get treated differently than a sunnier layout, because that's exactly where moss and moisture become long-term maintenance headaches.

Permitting and Structural Planning

Deck permitting requirements vary by jurisdiction and by the size and height of the structure. We handle figuring out what's required for your specific project and build to the load and safety requirements that apply, rather than leaving that as a surprise partway through the job.

Construction

Footings, framing, flashing, and fastener selection all follow the same standard regardless of decking material — because that's the part of the deck that determines whether it's still solid in ten or twenty years. The visible decking material goes on last, once the structure underneath is right.

Final Walkthrough

Before we consider the job done, we walk the deck with you — railings, stairs, drainage, and finish — so you know what you're looking at and what (if anything) it needs from you going forward.

Living With Moss Season: Maintenance That Actually Matters

Every deck in this area needs some seasonal attention — the difference between a deck that lasts and one that doesn't often comes down to a short list of habits:

Sweep leaves and debris off the surface regularly in fall, before they trap moisture against the boards
Clean visible moss or algae film off the decking surface at least once a year, before it gets slick
Check that gaps between boards are clear so water can drain instead of pooling
Inspect fasteners and hardware periodically for rust streaking or loosening
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 manufacturer's recommended schedule, not "whenever it looks dry"

None of this is complicated, but skipping it is the single biggest reason decks in this climate age faster than they should.

Why a Crew That Already Works in This Area Matters

A contractor who mostly builds in drier climates can still frame a deck that looks correct — square, level, well-fastened. What they're less likely to get right on the first job is the detailing that only matters here: how aggressively to flash a ledger board, which fastener grade actually holds up against this air, and where moss is going to become a problem based on how a yard is shaded. A crew that already works this area has seen which decks age well and which ones don't, and builds accordingly from the start instead of learning it on your project.

Cost Factors to Expect

Deck pricing depends on more than square footage. The main variables we walk through with homeowners are:

Factor	Impact on Cost
Decking material (treated wood vs. cedar vs. composite vs. PVC)	Largest single factor — material cost per square foot varies significantly
Height above grade and footing depth required	Taller decks and difficult soil conditions increase framing and footing cost
Railing style and stair complexity	Custom railings and multiple stair runs add labor
Site access and existing structure removal	Tear-off of an old deck or tight site access adds time
Permitting and engineering requirements	Larger or taller decks may require engineered plans

We'd rather walk your specific site and give you real numbers than throw out a broad estimate that doesn't reflect your project.

Get a Free Estimate for Your Alger Deck

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 site, your budget, and the way this climate treats outdoor structures. There's no pressure and no obligation — just a straight answer about what your project involves. Use the form below to request a free estimate.