How long does building a new deck usually take once work actually starts?

A straightforward deck can often be framed and finished within one to two weeks of steady work, but permitting, engineering, and inspection scheduling can add several weeks before construction even begins. Weather delays are also more likely during the wetter months here, so timelines during late fall through early spring tend to run longer.

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

Ask whether they pull permits themselves, what fastener and hardware standards they use for treated lumber, and whether they'll show you the footing and framing before decking goes down. A contractor who's uncomfortable answering specifics about flashing, fasteners, or footing depth is worth a second look before you sign anything.

Do you install composite decking brands like Trex or TimberTech alongside wood options?

Yes, we install both wood and composite decking and can walk you through the trade-offs for your specific lot and budget. We don't push one over the other by default — the right choice depends on how much maintenance you want to take on and how the space gets used.

What's the real difference between hidden fasteners and face-screwed decking boards?

Hidden fastener systems clip boards from the side so there are no visible screw heads on the walking surface, which looks cleaner and avoids the small water-collection points that screw holes create. Face screwing is simpler and generally less expensive but leaves visible fastener heads that can loosen or corrode over time if the wrong hardware is used.

Does a deck in Mount Vernon need to be built any differently than one closer to the water in Anacortes?

The core construction — flashing, corrosion-resistant fasteners, proper footings, and drainage — doesn't change, since both areas sit in the same wet Skagit Valley climate. The main difference is that coastal Anacortes properties deal with more direct salt exposure, which can be a factor in choosing hardware and finishes, while Mount Vernon's inland setting still sees plenty of rain and shade-driven moss without the added salt air.

Deck Building in Mount Vernon, WA: Built for Skagit Valley Weather

Building Decks for Mount Vernon's Skagit Valley Climate

Mount Vernon sits inland along the Skagit River, a short drive from our home base in Anacortes, but it shares the same wet, marine weather pattern that soaks all of Skagit County for much of the year. Coastal spots on Fidalgo Island catch direct salt air off the water; Mount Vernon is far enough inland to avoid the worst of that, but it still sits under the same low, gray sky for months at a time. Driving rain, prolonged humidity, and a long moss season are just part of owning a home here — and a deck, more than almost any other exterior structure, feels it first.

A deck is essentially a horizontal surface exposed to the sky, sitting low to wet ground, built mostly from wood or wood-based materials. That combination is exactly what this climate is hardest on. Winters here are mild compared to the rest of the state, but the valley still sees enough freeze-thaw cycling to matter for anything set in the ground — footings that aren't set correctly can shift slightly over a few winters, which is exactly the kind of problem that shows up years later as a deck that's started to feel spongy or uneven. We've built and repaired enough decks in this valley to know where the shortcuts show up first, and it's rarely the parts homeowners can see.

What a Deck Built for This Region Actually Needs

A deck that holds up in Skagit County isn't built differently because of a fancier material — it's built differently because of where the water is directed and how the wood is allowed to dry out between storms. Get those two things wrong and even good lumber and good composite decking will fail early.

Ledger Attachment and Flashing

The ledger board — the piece that bolts the deck to your house — is the single most common failure point on decks generally, and a wet climate makes it worse. If the ledger isn't properly flashed to shed water away from the house band board, moisture gets trapped behind it and starts rotting the structure from the inside, often for years before anyone notices from the outside. We flash every ledger connection correctly and never rely on caulk alone to do that job.

Fasteners That Won't Corrode

Most treated lumber today uses a copper-based preservative that's corrosive to standard steel fasteners and hardware. In a climate with this much sustained moisture, using the wrong screws or joist hangers isn't a small oversight — it's a slow-motion problem. We use hot-dip galvanized or stainless steel fasteners and connectors rated for contact with treated lumber, every time, not just at the visible spots.

Drainage and Slope

Decking should be sloped slightly away from the house so water doesn't pool against the siding or sit trapped under the boards. Framing and footings need to sit above grade with real drainage beneath them, not resting on compacted soil that holds water against untreated wood after every storm.

Gaps for Wood Movement

Wood and composite decking both expand and contract with moisture. Gaps that are too tight trap debris and hold water between boards, which is exactly where moss and rot get started. Gaps that are too wide catch heels and look sloppy. We set spacing based on the specific material and the moisture conditions at the time of install, not a one-size number.

Choosing a Decking Material

There's no single "best" decking material — there's a best material for your budget, your maintenance appetite, and how much sun versus shade your deck actually gets. Shaded decks under trees, which are common on wooded lots around Mount Vernon, hold moisture longer and grow moss faster regardless of material, so that's worth factoring in before you pick a product.

Material	Moisture & Moss Resistance	Maintenance	Typical Lifespan	Relative Cost
Pressure-Treated Lumber	Good if sealed regularly; prone to moss in shaded spots	Annual cleaning and resealing recommended	15-20 years with upkeep	Lower
Cedar	Naturally rot-resistant but still needs sealing to hold color and shed water	Sealing every 1-2 years, more attention to detail work	15-25 years with upkeep	Moderate
Composite / PVC	Excellent — won't rot, but can still grow surface moss or mildew if never cleaned	Periodic washing, no sealing or staining	25-30+ years	Higher

We install all three. The honest trade-off: wood costs less up front and looks great when it's maintained, but it needs real annual attention in this climate or it will show it fast. Composite costs more up front but takes rot and re-staining off your to-do list — though it still needs to be washed off now and then, since moss and mildew will grow on any horizontal surface left wet and shaded long enough, composite included.

The Substructure Most People Never See

Footings and Frost

The part of a deck that actually determines its lifespan is buried in the ground. Footings need to be sized and set to the depth required by local code, resting on solid, undisturbed soil — not just poured into a shallow hole that looked deep enough. In a valley with real winter freeze-thaw cycling, a footing set too shallow can shift slightly year over year, and that movement eventually telegraphs up through the whole structure as squeaks, gaps, or a rail that's gone slightly out of plumb.

Sizing for the Actual Load

Beam and joist spacing has to match the load the deck will actually carry — furniture, a crowd of people, and in some cases a hot tub, which weighs far more than most homeowners expect once it's full of water and occupied. A deck sized for casual seating isn't automatically sized for a hot tub added later, so if that's part of the plan, it needs to be part of the design from the start, not an afterthought bolted onto standard framing. We also run joist tape or an equivalent moisture barrier on top of framing lumber before decking goes down, which slows the rot that typically starts at fastener holes where water collects and sits.

Our Process, Start to Finish

Site visit and design: We look at your lot's drainage, sun and shade exposure, existing structure, and how you actually want to use the space before drawing anything up.
Permitting and engineering: Attached decks and guard rails typically require a permit and, depending on size and height, engineered footing or ledger details. We handle that process rather than leaving it to you.
Footings and framing: Footings are dug to the required depth, framing is built square and level with corrosion-appropriate hardware throughout.
Decking, rails, and stairs: Boards are laid with proper spacing and fastening for the material chosen; railings and stairs are built to current code for height, spacing, and rise and run.
Final walkthrough: We go over the finished deck with you, including what maintenance it needs and when, before we call the job done.

Permits and Local Code Considerations

Most decks attached to a house, and any deck with a walking surface a certain height above grade, require a building permit and a compliant guard rail — generally in the 36-42 inch range with baluster spacing that meets code, though exact requirements depend on deck height and the version of code currently adopted. Setbacks from property lines can also apply, especially on smaller in-town lots. We pull permits and coordinate inspections as part of the job rather than treating it as the homeowner's problem to sort out. Skipping this step is one of the more common ways homeowners end up with a deck that complicates a future home sale, since unpermitted structures tend to surface during a home inspection or title search.

Keeping a Skagit County Deck Looking Good

Every deck in this climate needs some seasonal attention, regardless of material. This is the short version of what we tell every deck client here:

Sweep leaves and needles out of board gaps before they trap moisture and feed moss growth
Rinse or lightly scrub the deck surface a couple of times a year, especially in shaded areas
Reseal wood decking on the schedule the product calls for — don't wait until it already looks gray and dry
Check the ledger flashing and the area where the deck meets the house once a year for staining or soft wood
Trim back overhanging branches and nearby shrubs so air can actually move under and around the deck
Check fasteners, railing connections, and stair treads for movement or corrosion staining

Why Hire a Crew That Already Works Mount Vernon

We're based in Anacortes and work throughout Skagit County, which means we're already familiar with how local building departments handle deck permits, what footing depths and inspection sequences to expect, and how this valley's specific mix of rain, shade, and humidity behaves on a real jobsite over time. That's different from a crew that builds mostly in a drier climate and treats flashing and fastener choice as optional upgrades rather than the baseline. It also means if a warranty question or a maintenance question comes up a couple of years down the road, we're a short drive away, not a company that's moved on to a different region entirely.

If you're planning a new deck or trying to figure out whether an existing one is still sound, we're happy to take a look and give you a straight answer. Reach out for a free, no-pressure estimate using the form below.