Anacortes Ship Harbor sits on the west side of Anacortes, close to the water where the ferry terminal and shoreline meet Rosario Strait. Homes in this part of town get a version of Skagit County's marine climate that's more direct than most — open water exposure, wind that carries salt with it, and enough shade from surrounding trees on some lots to keep things damp longer than a homeowner might expect. If you're planning new siding or a full re-side for a Ship Harbor property, the installation itself matters as much as the material, and in a spot this exposed, more than it would inland.
What Ship Harbor's Climate Asks of a Siding Job
Every coastal Anacortes property deals with some combination of salt air, driving rain, and moss pressure, but the mix looks a little different depending on where a lot sits relative to the water and tree cover. Ship Harbor properties close to the shoreline take wind and salt spray more directly, while lots set back under trees deal more with shade and slow-drying dampness. Either way, the exterior of the home is working harder than a comparable house a few miles inland, and the siding installation needs to account for that from the start rather than treating it as an afterthought.
Salt Air and Corrosion
Airborne salt off open water accelerates corrosion on fasteners, flashing, and any exposed hardware. It's a slow process, which is exactly why it's easy to underestimate — a fastener that looks fine on install day can be streaking rust within a few years if it wasn't rated for the exposure. That's a hardware decision made at the time of installation, not something that can be fixed later without pulling the siding back off.
Wind-Driven Rain
Rain coming off the water rarely falls straight down here — wind pushes it sideways into panel joints, trim seams, and window and door openings. That means the water-resistive barrier underneath the siding, and how carefully it's lapped and sealed at every seam and penetration, is doing more of the real work keeping a Ship Harbor home dry than the siding material itself.
Moss and Slow-Drying Surfaces
Shaded, tree-lined lots near the water hold moisture longer between rain events, which gives moss and algae time to establish on north-facing walls and anywhere airflow is restricted. Installation details like proper clearance at the bottom of the wall and a drainage gap behind the siding make a real difference in whether a wall gets the chance to dry out or stays damp through most of the wet season.
Why the Installation Itself Is What Determines the Outcome
Siding material choice gets most of the attention, but whether a job lasts three decades or starts failing in five comes down almost entirely to how it went on the wall. That's true anywhere, but a Ship Harbor lot with direct water exposure puts installation shortcuts under pressure faster than a sheltered inland site would. A skipped clearance, an unsealed cut edge, or a rushed flashing detail won't show up on the day the crew leaves — it shows up two or three winters later as staining, softness, or a warranty claim that gets denied because the work didn't follow the manufacturer's spec.
This page is specifically about installing siding — new work and full re-sides, not spot repair of an otherwise sound wall. We install James Hardie fiber cement exclusively, and everything below assumes that system, since it's the only one we install to spec on Anacortes homes.
What a Correct James Hardie Installation Involves
Fastening and Spacing
James Hardie publishes specific fastener type, spacing, and placement requirements that vary by product line and exposure category. Following that spec exactly — not an abbreviated version of it — is what keeps panels secured through coastal wind loads and what keeps the manufacturer's warranty intact if an issue ever comes up down the road.
Clearances Above Grade, Roofing, and Decks
Hardie specifies minimum clearance between the bottom of the siding and grade, roof lines, decks, and other horizontal surfaces. Those clearances keep the lowest courses out of standing water and splash-back, which is a common failure point on older homes where landscaping has built up over the years or a deck was added after the original siding.
Flashing and Sealant at Every Penetration
Windows, doors, vents, hose bibs, and light fixtures all break the plane of the siding, and each one is a potential entry point for water if it's flashed or sealed incorrectly. This is the slowest, least visible part of the job, and it's the part that decides whether the wall stays dry behind the cladding for decades or starts trapping moisture within a few seasons.
Field-Cut Edges
Any panel cut on site — around a window, at a corner, at the end of a run — needs that cut edge sealed or primed per Hardie's specification before it goes up. An unsealed field cut is one of the more common places fiber cement siding actually takes on water, and it has nothing to do with the material and everything to do with whether that step got skipped.
Where Installation Shortcuts Fail Fastest This Close to the Water
| Shortcut | What it looks like on install day | How it shows up later on a Ship Harbor home |
|---|---|---|
| Standard fasteners instead of corrosion-resistant hardware | No visible difference | Rust streaking and loosened panels within a few years, faster on water-facing walls |
| Skipped clearance at grade or deck ledger | Siding looks flush and tidy | Wicking, softness, and paint failure at the bottom courses |
| Rushed or taped-over window flashing | Looks sealed from the outside | Hidden moisture intrusion, often not noticed until interior staining shows up |
| Unsealed field-cut edges | Cuts appear clean and painted | Localized swelling or delamination at the cut, especially facing the water |
| Panels installed tight with no drainage gap | Appears well-fitted | Trapped moisture and persistent moss on shaded walls that never fully dry |
Our Process for a Ship Harbor Installation
Site and Exposure Assessment
Before we price anything, we walk the property and look at how each wall is exposed — which faces catch direct wind and salt off the water, which sit shaded under trees, and whether existing moss buildup or staining points to a chronic moisture problem versus a one-time issue.
Tear-Off and Sheathing Check
On a re-side, old siding comes off and the sheathing underneath gets inspected before anything new goes up. Covering damaged sheathing with new siding just buries the problem, so we'd rather find and address rot or soft spots at this stage even if it adds a step.
Weather Barrier Installation
The water-resistive barrier goes on with proper overlap and taped seams at every joint and penetration before flashing and siding are installed over it. This layer is completely hidden once the job is done, but it's doing most of the work keeping wind-driven rain out of the wall.
Siding Installed to Manufacturer Spec
Panels go up following Hardie's fastening, spacing, and clearance requirements as the baseline, not an option to trim when the schedule gets tight. Field cuts get sealed as they're made, not batched for the end of the day.
Final Walkthrough
We walk the finished job with the homeowner, confirm the work matches the estimate, and talk through what basic maintenance looks like on a home this exposed to the water.
New Construction vs. Re-Siding an Existing Ship Harbor Home
New construction siding installation means working onto fresh sheathing and a new water-resistive barrier with no unknowns hiding behind the wall — the sequence still matters, but there's no guesswork about existing conditions. Re-siding an existing Ship Harbor home adds a discovery phase: an honest look at what the original construction and any past repairs left behind, and often correcting older detailing like missing flashing, inadequate clearances, or a barrier that was never installed properly. Both jobs demand the same attention to spec once new siding starts going up; re-siding simply requires more diagnosis before that point.
Timeline and Cost Factors
Every estimate is specific to the house, but a handful of factors consistently drive both price and schedule on a Ship Harbor installation:
| Factor | Why it matters |
|---|---|
| Square footage and number of stories | More area and height mean more labor, and taller walls often need more staging or access equipment |
| Trim and detail complexity | More windows, gables, and roofline transitions mean more flashing and cutting work |
| Sheathing condition found during tear-off | Rot or water damage adds repair scope before new siding can go up |
| Exposure to wind and open water | Water-facing walls typically warrant closer attention to flashing and drainage detail |
| Product line and finish selection | James Hardie offers multiple panel styles, textures, and ColorPlus finishes at different price points |
Weather windows affect scheduling more directly on an exposed Ship Harbor lot than on a sheltered inland property — wind off the water can shut down safe panel handling and staging on days that would otherwise be workable elsewhere in Anacortes, so we build some flexibility into project timelines instead of promising a fixed date a bad weather stretch is likely to break.
A Checklist for a Correct Installation
Whether you're evaluating our work or getting a second opinion, these are reasonable things to confirm before a siding installation is considered finished:
- Fasteners and hardware rated for coastal or marine exposure, not standard-grade material
- Documented clearance between the bottom of the siding and grade, decks, and roofing
- Flashing visible and properly lapped at every window, door, and wall penetration before siding covers it
- All field-cut edges sealed or primed, not left raw
- A continuous, properly lapped water-resistive barrier underneath the siding
- Installation that follows the manufacturer's published fastening and spacing spec, not a generalized approach
- A final walkthrough where the contractor explains what was done, not just an invoice
Why a Crew That Already Works Ship Harbor Matters
Installation quality on paper and installation quality in practice aren't always the same thing, and the gap shows up fastest on a demanding waterfront lot. A crew that regularly installs siding on homes with this kind of direct water exposure makes different calls than one working here occasionally between jobs elsewhere in the county — where extra flashing attention is worth the time, which fastener spec actually holds up on a water-facing wall, and which shaded lots are going to fight moss no matter what gets installed. That judgment comes from doing the work repeatedly on homes in this specific spot, not from applying a generic checklist the same way everywhere.
If you're planning new siding for a Ship Harbor home, or want a straight answer on whether an existing installation was actually done right, we're glad to come take a look. Reach out using the form below for a free, no-pressure estimate.