Anacortes March Point's Exposure Is Different From the Rest of Anacortes
March Point sits out on its own peninsula, wrapped by water on multiple sides and directly in the path of wind coming off Fidalgo Bay and the surrounding channels. That position means homes here take on a combination of salt-laden air, driving rain that hits siding at an angle instead of straight down, and a long stretch of the year where surfaces simply don't dry out between storms. Add in the shade and moisture that keep moss and algae going on north- and west-facing walls for months at a time, and you have a siding environment that punishes anything not built to handle sustained dampness.
Skagit County's marine climate is forgiving in some ways — no extreme heat, no hard freeze-thaw cycles like inland Washington sees — but it is unforgiving toward materials that absorb moisture, swell, or hold onto it against a wall. On a peninsula like March Point, that exposure is amplified. We've replaced siding on homes here where the failure pattern was obvious once you saw it: soft spots at the bottom courses, paint failing years before it should, and moss establishing itself in seams and laps that never got a chance to dry.
Why James Hardie Fiber Cement Is What We Install Here
We install James Hardie fiber cement siding exclusively — we don't offer vinyl, LP SmartSide, Cemplank, Allura, primed spruce, or cedar as alternatives on our jobs. That's not a marketing position, it's a standard we hold because of what we've seen happen to other materials in exactly this kind of coastal, high-moisture exposure.
Fiber cement is non-combustible and dimensionally stable — it doesn't expand and contract with moisture the way wood-based products do, and it doesn't soften or delaminate the way some engineered wood siding can when water gets past a seam. For March Point specifically, that stability matters because the siding is wet more often than it's dry for a good chunk of the year. James Hardie's ColorPlus factory-applied finish is baked on and cured before it ever reaches the jobsite, which gives it better fade and chip resistance than a field-applied paint job, and it means the color coat isn't the first line of defense against water — the fiber cement substrate itself doesn't rot.
The HZ5 Distinction
James Hardie engineers specific product formulations for different climate zones, and the Pacific Northwest falls into their HZ5 zone — designed around resistance to moisture and freeze-thaw cycling common in wetter, cooler climates. We spec HZ5-engineered products on March Point jobs rather than a generic formulation, because the whole point of climate-zone engineering is that it's tuned to the conditions a home will actually face, not conditions somewhere else in the country.
Why We Don't Install the Alternatives Here
Vinyl siding can work fine in a lot of climates, but it relies on lap joints and J-channels that aren't sealed the way a properly caulked fiber cement joint is, and in wind-driven rain those laps can let water track behind the panel. LP SmartSide and other engineered wood products perform well when installed and maintained exactly to spec, but they're wood-based, meaning any breach in the factory coating becomes an entry point for moisture that wood fibers will absorb and swell around. Cedar and primed spruce require the homeowner to stay ahead of refinishing on a schedule that a busy household in a wet climate often can't keep up with — and once that maintenance slips on a peninsula like March Point, the moisture damage moves fast. We'd rather put one material on the wall that's engineered for this exposure than ask a homeowner to manage the upkeep schedule a different material demands.
What a Correct Installation Actually Involves
Fiber cement siding is only as good as the installation behind it, and in a high-moisture location like March Point the installation details matter more than they would somewhere drier. A siding job that looks right from the curb can still fail early if the water management underneath it is wrong.
- Correct fastener placement and depth — over-driven or under-driven nails create gaps or crush the material, both of which compromise the water-resistive barrier behind the siding.
- Proper clearances at the ground, roofline, and around penetrations like hose bibs, vents, and light fixtures — James Hardie specifies minimum gaps for a reason, and closing those gaps traps moisture against the bottom of the board.
- Correct flashing and integration with the water-resistive barrier (house wrap) so water that gets behind the cladding has somewhere to drain, rather than pooling against sheathing.
- Field-cut edges primed and sealed before installation, since the factory finish only protects the face and edges of the board as manufactured — any cut edge left bare is a moisture entry point.
- Correct caulking at butt joints and trim intersections using a sealant rated for the exposure, not a generic caulk that will crack and open up in a year or two.
- Rinse siding periodically to clear salt residue and organic growth, especially on shaded or north-facing walls.
- Keep gutters and downspouts clear so roof runoff isn't dumping extra water onto siding and trim.
- Trim back vegetation and keep sprinklers from hitting the wall directly — sustained wetting at one spot is what causes localized problems.
- Inspect caulk lines at trim and butt joints every year or two and have any cracked sealant redone before it becomes a moisture path.
- Watch the base of the wall near grade — that's the area most exposed to splashback and standing moisture.
Every one of these steps is more forgiving in a dry climate and less forgiving in a wet one. On March Point, a shortcut at any one of these points tends to show up as a problem within a few wet seasons rather than a decade down the road.
How We Approach a March Point Job
Assessment Before We Ever Talk Product
We start by walking the exterior and looking at where the current siding (or the wall behind it, on a full tear-off) has actually taken damage — which elevations get the worst wind-driven rain, where moss and algae have established themselves, and whether there are existing moisture or rot issues at trim, corners, or the base of the wall. That assessment drives the plan, not the other way around.
Tear-Off and What We Look For Underneath
On a re-side, removing the old siding is when we find out what's really going on behind it. In a marine climate like this, it's common to find sheathing that's taken on moisture over the years, especially at penetrations and lower courses. We address what we find before anything new goes on the wall — installing over a compromised substrate just locks the problem in behind new siding.
Installation Sequence
House wrap and flashing details get addressed first, then the Hardie boards or panels go up following manufacturer clearance and fastening specifications, with trim, caulking, and paint touch-up (where field-cut edges need it) completed as we go rather than left for the end.
Final Walkthrough
We walk the finished job with the homeowner, checking caulk lines, paint touch-up, and clearances, and we're upfront about what maintenance — if any — the homeowner should expect to do, and on what schedule.
Comparing Siding Options for a March Point Exposure
| Factor | James Hardie Fiber Cement | Vinyl | Engineered Wood / Cedar |
|---|---|---|---|
| Moisture behavior in driving rain | Doesn't absorb or swell; factory-cured finish resists coastal fade | Panel itself resists water, but laps can let wind-driven rain track behind | Wood-based fibers absorb moisture if the coating is breached |
| Moss/algae resistance | Surface doesn't feed organic growth the way bare wood can | Growth can establish in laps and channels | Prone to moss and staining without regular cleaning/refinishing |
| Fire resistance | Non-combustible | Combustible, can melt/deform near heat sources | Combustible |
| Maintenance burden | Occasional wash; no repainting on ColorPlus finish for years | Low, but cracks/fades and isn't repairable in sections easily | Regular refinishing schedule to protect the substrate |
| Typical lifespan when installed to spec | Multiple decades | 15-25 years, shorter in harsh coastal exposure | Varies widely with maintenance discipline |
What This Costs and What Drives the Number
We don't quote pricing without seeing the home, because the real cost drivers on a March Point job are specific to that house: how much of the existing wall system needs repair before new siding goes on, how many stories and how much trim and penetration detail there is, and whether it's a full tear-off or, in rarer cases, an install over sound existing sheathing. Homes with wind-exposed elevations facing open water or with existing moisture damage from a prior siding failure will generally cost more to do correctly, because that hidden repair work has to happen before the new siding goes up — not after.
Maintaining Hardie Siding on a Peninsula Like This
None of this is heavy maintenance compared to a wood-based product's refinishing schedule, but it's not zero either — a few minutes of attention a couple times a year keeps small issues from becoming siding failures.
Why Local Experience on This Peninsula Matters
A crew that's worked March Point before already knows which elevations take the worst of the wind and rain, where moss tends to establish first, and what kind of substrate damage to expect on a tear-off in this specific setting. That's not something you get from a general contractor working here for the first time — it comes from having pulled old siding off enough March Point walls to know the pattern. That local knowledge shows up in small decisions throughout the job: where to add extra attention to flashing, which elevations warrant a closer look at the sheathing, and how to sequence the work around the wetter stretches of the year.
Get a Straight Answer for Your Home
If you're dealing with moss buildup, failing paint, or soft spots on your March Point home's siding, we're glad to take a look and give you a straightforward assessment — what's actually going on, what a correct fix involves, and what it would take to do it right with James Hardie. The estimate is free and there's no pressure to move forward; fill out the form below and we'll set up a time to come by.