Why Decks in Ship Harbor Wear Out Faster Than the Manual Says
Ship Harbor sits close to the water on the west side of Fidalgo Island, and that proximity shows up in every deck we've replaced out there. Salt-laden air off the strait accelerates corrosion on anything metal — nails, screws, joist hangers, railing brackets — long before the wood or composite decking itself gives out. Add in driving rain that comes sideways off the water during fall and winter storms, and you get moisture finding its way into joints and fastener holes that would stay dry in a more sheltered part of Skagit County.
Then there's moss. Anacortes gets a long wet season, and shaded or tree-covered lots near Ship Harbor grow a steady green film on any horizontal wood surface that isn't cleaned regularly. Moss holds moisture against the decking boards and the structure underneath, which is exactly the environment rot and fastener corrosion need to take hold. None of this means a deck can't last — it means it has to be built and replaced with this specific combination of salt, rain, and shade in mind, not with a generic approach that works fine forty miles inland.

Signs a Deck Needs Full Replacement, Not a Patch Job
We get calls where a homeowner wants a few boards swapped, and once we're underneath, it's clear the problem is bigger than the surface. Here's what usually tells us a deck is past the point of spot repair:
- Soft or spongy decking boards, especially near the house or in shaded corners
- Rust streaking down from screw heads or joist hangers
- A ledger board (where the deck attaches to the house) that's dark, swollen, or separating from the rim joist
- Railing posts that wiggle when pushed, even slightly
- Visible moss or algae that keeps coming back within weeks of cleaning
- Gaps between boards that have closed up or widened unevenly, a sign of structural movement below
A deck that fails at the ledger connection is the one that concerns us most, because that's the point where the whole structure ties into your home's framing and exterior wall assembly. If that connection has been leaking for years, there's a real chance the damage extends into the siding and sheathing behind it — which is worth knowing since it affects both the deck scope and the wall behind it.
Why Repair Sometimes Makes the Problem Worse
Replacing a few visibly bad boards on an otherwise aging deck can mask what's happening underneath. New boards on old, weakened joists or a compromised ledger just buy a couple of dry-looking seasons before the same rot resurfaces — usually in a spot that's harder to access. If more than a third of the structural framing shows soft spots or corrosion, full replacement is almost always the more honest answer, both for safety and for what it costs you over time.
What a Correct Deck Replacement Actually Involves
A deck replacement done right in this climate is as much about what's underneath as what you walk on. We treat the following as non-negotiable on every job:
Ledger Flashing
The ledger board and its flashing are the single most common failure point on coastal decks. We install proper flashing that directs water away from the house — not just caulk over the old connection — and we check that the ledger is lagged into solid framing, not just the exterior sheathing.
Joists and Framing
Pressure-treated framing lumber is standard, but in a salt-air environment we also pay attention to fastener compatibility. Standard electroplated screws corrode fast near the water; we use fasteners and joist hangers rated for treated lumber and coastal exposure so they don't become the weak point in five years.
Ventilation and Drainage
Decks built low to the ground or over grade with poor drainage trap moisture underneath, which speeds up both rot and moss growth on the underside of the structure. Where the site allows it, we build in enough clearance and slope to let air move and water drain away instead of pooling.
Railings and Stairs
Code requirements for railing height, baluster spacing, and stair geometry apply to replacement decks the same as new construction in most cases. We build to current code, not just to match what was there before.
Decking Material Options for a Ship Harbor Property
There's no single "right" material for every home — it depends on your budget, how much upkeep you want to do, and how much sun or shade the deck gets. Here's an honest comparison of what we typically install or recommend in this area:
| Material | How It Handles Salt Air & Moisture | Moss Resistance | Maintenance |
|---|---|---|---|
| Pressure-treated wood | Good if fasteners and flashing are done right; the wood itself resists rot well | Needs regular cleaning in shaded spots | Annual cleaning, re-staining every 2-3 years |
| Cedar | Naturally rot-resistant, but softer and more prone to surface weathering near the water | Needs regular cleaning | Similar to treated wood, plus more careful sealing |
| Composite (e.g. Trex, TimberTech) | Excellent — doesn't absorb moisture, fasteners are the main corrosion point to watch | Better than wood, but still needs washing off in shaded areas | Occasional washing, no staining or sealing |
| PVC decking | Best moisture performance of the group; fully synthetic | Best resistance of the group | Lowest maintenance, higher upfront cost |
We don't push everyone toward composite or PVC — a well-built wood deck with the right fasteners and a homeowner willing to clean it once or twice a year will last plenty of years out here. What we do insist on is matching the maintenance plan to the material, honestly, before the job starts, so there are no surprises two winters in.
Our Deck Replacement Process
- On-site assessment — We inspect the existing deck, ledger connection, and framing to determine the real scope, not just what's visible from the top.
- Written estimate — You get a clear breakdown of demolition, materials, and labor, with material options priced out so you can compare.
- Permitting — Deck replacements in the Anacortes area typically require a permit, especially when structural framing or the ledger connection is being redone. We handle that paperwork.
- Demolition — Old decking, and framing where needed, is removed and hauled off.
- Framing and flashing — New or reinforced joists, proper ledger flashing, and coastal-rated fasteners go in before a single decking board is placed.
- Decking, railing, and stairs — Installed to current code and to the material spec you chose.
- Final walkthrough — We check the deck with you before calling the job done.
What Affects the Cost of a Deck Replacement Here
| Factor | Why It Matters |
|---|---|
| Size and shape | Multi-level decks or non-rectangular footprints add framing complexity and labor time |
| Decking material | Composite and PVC cost more upfront than pressure-treated wood, less over time in upkeep |
| Ledger and framing condition | Hidden rot at the ledger or joists adds repair scope beyond a straight decking swap |
| Railings and stairs | Custom railing styles, cable rail, or multiple stair runs add cost |
| Site access | Steep lots or tight side-yard access near the water can slow demolition and material staging |
| Permitting | Structural changes usually require inspection, which affects timeline more than price |
We won't quote a number without seeing the deck — anyone who does is guessing. What we can say is that the biggest swings in price come from what we find once the old decking comes off, which is exactly why our estimate walks through what's likely versus what's a known cost.
Keeping a New Deck in Good Shape Through Skagit County Winters
A properly built deck still needs some care in this climate. A short routine keeps moss, rot, and fastener corrosion from getting a foothold:
- Sweep off standing debris and needles after storms, especially in shaded corners
- Rinse or lightly scrub visible moss growth before it spreads across boards
- Check railing posts and stair connections once a year for movement
- Re-seal or re-stain wood decking on the schedule the product calls for — don't wait for it to look dry and gray
- Keep gutters and downspouts near the deck clear so runoff isn't dumping extra water onto or under it
- Look under the deck once a season for standing water or soft framing
Why Hiring a Crew That Already Works Ship Harbor Matters
We're not learning this microclimate on your project. A deck built to a generic spec sheet, without accounting for salt-air fastener corrosion or the moss load this area gets under tree cover, tends to show problems within a few years — right around when a homeowner who hired based on price alone starts calling around for repairs. We build ledger flashing, framing, and fastener choices around what actually holds up a few blocks from the water, because we've seen what doesn't.
That local knowledge also means a faster, more accurate estimate. We're not guessing at how exposed your lot is to wind-driven rain or how much shade it gets through the wet months — we already have a sense of it from working the area, and we confirm the specifics on-site.
If your deck is showing rust streaks, soft spots, or a ledger connection you're not sure about, we're happy to take a look. The estimate is free, there's no pressure to book anything on the spot, and you'll get a straight answer about whether you're looking at repair or full replacement — just fill out the form below.
Anacortes Siding