What actually holds a deck up structurally — is it the posts or the connection to the house?

Both matter, but the ledger board connection to the house and the footings below the posts are the two points that fail most often if built incorrectly. The ledger has to be properly flashed to keep water out of the house framing, and footings need to sit on stable soil below frost depth. A deck can look solid on the surface while one of these underlying connections is quietly failing.

What should I ask a contractor before hiring them to build a deck near March Point?

Ask specifically what fastener and hardware grade they use given the salt air, and how they detail ledger flashing for wind-driven rain. Ask whether they pull permits and schedule inspections, and ask if they've built decks in this specific area versus a general portfolio elsewhere. A contractor who can answer those specifics without hesitation has actually thought about this climate.

Is composite decking or real wood the better choice for a home near March Point's shoreline?

Composite and capped PVC decking generally handle constant moisture and shaded, moss-prone conditions with less upkeep than real wood in this specific environment. Real wood can still be a good choice if you're committed to regular sealing and cleaning, since it has a lower upfront cost and a different look many homeowners prefer. It comes down to how much ongoing maintenance you want to take on.

What kind of fasteners and hardware actually hold up in salty, damp coastal air?

Stainless steel fasteners and connectors offer the best long-term corrosion resistance in a salt-air environment, with heavy hot-dip galvanized hardware as a solid alternative depending on the project. Standard interior-grade or lightly coated fasteners corrode noticeably faster here and can weaken structural connections over time. The hardware grade should also be matched to whatever treated lumber is used, since some combinations corrode faster together.

Do I need a permit to build a deck in March Point or unincorporated Skagit County?

Most attached or elevated decks require a building permit and inspection of the footings and framing before the decking goes on, though exact requirements depend on the property's specific location relative to city limits. We confirm the correct permit path for each address as part of the project rather than leaving homeowners to figure it out. Skipping required permits can create real problems later, including at resale.

March Point Deck Building Built for Anacortes Salt Air

Building a Deck That Actually Holds Up on March Point

March Point sits right on the water's edge outside Anacortes, and that location cuts both ways. The views and the access to Fidalgo Bay and Padilla Bay are part of why people build outdoor living space here in the first place — but that same exposure is exactly what breaks decks down faster than it would a few miles inland. Salt-laden air, near-constant winter rain, and a long moss season put real, measurable stress on a deck's hardware, framing, and surface. A deck built to a generic spec sheet will show problems within a few years out here. One built for this specific stretch of Skagit County shoreline won't.

This page is about that difference: what March Point's climate actually does to a deck over time, what a correctly built deck needs to resist it, and how we approach the job as a crew that already works in this specific area rather than one passing through.

What March Point's Climate Does to a Deck

Salt Air and Corrosion

Being close to open water means airborne salt is part of daily weather here, not an occasional event. Salt accelerates corrosion in any exposed metal — nails, screws, joist hangers, post bases, bolts. On a deck built with standard interior-grade or even basic exterior-rated fasteners, that corrosion shows up as rust streaks on the decking, weakened connections at joist hangers, and eventually fasteners that back out or shear because the metal has thinned. This isn't cosmetic. A corroded joist hanger is a structural problem, not a paint problem.

Driving Rain and Ledger Rot

Anacortes gets plenty of rain that doesn't fall straight down — wind off the water pushes it sideways into siding, ledger boards, and any gap in flashing. The ledger board, where a deck attaches to the house, is the single most common failure point on decks in this region. If water gets behind the ledger and can't get back out, the rim joist and house framing rot from the inside, and you don't see it until the deck starts to feel spongy or pull away from the house.

Moss Season and Slip Risk

Western Washington's moss season runs long — shaded, north-facing, and low-airflow deck areas can stay damp for months at a stretch. Moss and algae on decking aren't just a maintenance annoyance; they turn a deck surface into a slip hazard, and they hold moisture against the board surface, which shortens the life of both wood and composite decking. Decks with poor drainage or airflow underneath grow moss faster and dry out slower after every rain.

What a Correctly Built Deck Requires Here

Footings and Framing

Footings need to be sized and set below frost depth and bear on undisturbed, stable soil — not fill dirt or organic topsoil, which is common in this area near the water. Framing lumber should be a pressure-treated grade rated for ground contact where it's within a few inches of soil or in persistent shade, not just the lighter above-ground rating that's cheaper but under-protected for a damp climate.

Ledger Attachment and Flashing

The ledger board needs proper flashing that directs water away from the house wall and down past the ledger, with a gap or drainage plane behind it so any water that does get in has somewhere to go besides the framing. This is the detail that separates a deck that lasts decades from one that needs the ledger rebuilt in year eight.

Fasteners and Hardware

Given the salt air, we treat corrosion-resistant hardware as a baseline requirement here, not an upgrade. That means stainless steel or heavy hot-dip galvanized fasteners and connectors rated for coastal exposure, matched to whatever treated lumber is used (some treatment chemicals corrode standard galvanized hardware faster, so the pairing matters).

Decking Material Choice

Whatever surface material goes on top has to handle standing moisture, moss growth, and UV without needing constant upkeep. That's a real trade-off decision, not a one-size answer — covered below.

Decking Material: What Actually Fits This Climate

There's no single "best" decking material for every house — it depends on how much maintenance you want to take on, your budget, and how shaded or exposed the deck site is. Here's how the common options actually compare for a March Point property:

Material	Moisture & Moss Behavior	Maintenance	Typical Lifespan Here
Pressure-treated wood	Absorbs moisture readily; needs sealing to shed water and resist moss staining	Annual cleaning and re-sealing recommended	10-15 years with upkeep, less without it
Cedar	Naturally rot-resistant but still needs treatment in a wet, shaded site	Periodic oiling/sealing to hold color and resist moisture	15-20 years with regular care
Composite decking	Doesn't absorb moisture like wood but can still grow surface moss/algae in shaded, damp spots	Occasional washing; no sealing or staining	25+ years
PVC/capped composite	Fully moisture-resistant surface; least prone to holding algae growth	Lowest — periodic rinse is usually enough	25-30+ years

For a shaded, water-adjacent site like March Point, we generally steer clients toward composite or capped decking when budget allows, simply because the maintenance burden of real wood is higher here than it would be in a drier, sunnier location. That said, plenty of homeowners prefer the look and feel of real wood and are willing to keep up with sealing — it's a legitimate choice as long as the upkeep happens on schedule.

Our Process for a March Point Deck Build

Site assessment — we look at sun/shade exposure, prevailing wind and rain direction, soil condition, and how the deck will tie into the house before anything is designed.
Design and material selection — layout, footing locations, and decking material are chosen based on that site assessment, not a standard template.
Permitting — we handle the paperwork for the footing/framing plan so the structural work is inspected and documented.
Footings and framing — footings set to proper depth, framing built with ground-contact-rated lumber where required and coastal-grade hardware throughout.
Ledger and flashing — the house connection gets proper flashing and a drainage gap, checked before it's ever covered by decking.
Decking installation — boards installed with correct spacing for drainage and airflow underneath.
Final walkthrough — we go over care and maintenance specific to the material installed and the site's sun/shade conditions.

Permits and Local Requirements

Deck construction in and around Anacortes and unincorporated Skagit County generally requires a building permit once the deck is above a certain height or attached to the house, along with inspection of the footings and framing before decking goes on. Requirements can vary depending on exactly where a property sits relative to city limits, so we confirm the specific permit path for each address rather than assuming — this is part of what we handle as part of the project rather than leaving to the homeowner.

Maintenance Checklist for Salt-Air, Moss-Prone Decks

Whatever material you choose, a few habits make a real difference in how long a deck lasts on March Point:

Sweep debris and standing moisture off the deck surface regularly, especially in shaded corners
Clean moss and algae off the surface before it builds up a slick film — a stiff brush and a deck-safe cleaner is usually enough
Check fastener heads and any visible hardware once a year for rust or corrosion
Inspect the ledger board area and flashing annually for any sign of water staining or soft wood
Reseal or restain wood decking on schedule rather than waiting until it looks worn
Keep gutters and downspouts near the deck clear so runoff isn't dumping extra water onto or under it
Make sure under-deck airflow isn't blocked by stored items, landscaping, or skirting that traps moisture

Why a Crew That Already Works March Point Matters

A lot of deck problems we get called to look at weren't built badly out of carelessness — they were built to a spec that works fine somewhere drier and less exposed to salt air, and just wasn't matched to this location. Knowing which fastener grade actually holds up here, how ledger flashing needs to be handled given the wind-driven rain, and which decking materials are worth the extra cost in a moss-prone, shaded site comes from working on this stretch of coastline repeatedly, not from a general contracting background alone. That's the difference between a deck that needs real repair work in year six and one that's still solid at year twenty.

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