Anacortes March Point's Water Exposure Changes What Siding Has to Do
March Point sits out on the water, and that changes the math on siding. Homes tucked a few miles inland in Anacortes or elsewhere in Skagit County still deal with our wet Pacific Northwest weather, but they're not catching the same steady salt-laden wind off the bay day after day. Out on the point, siding is fighting three things at once: salt air that accelerates corrosion on anything metal, wind-driven rain that gets pushed sideways into seams and trim instead of just running down the face of the wall, and a long gray moss season where shaded or north-facing walls barely dry out between storms.
None of that is exotic. It's the same set of forces every waterfront and near-waterfront home in this region deals with. But it means the margin for error on a March Point siding job is smaller than it is on a typical inland install. A product that's marginal for the coast, or a flashing detail that's "close enough," shows its weaknesses here faster — often in years, not decades.
What Correct Siding Installation Actually Involves
A siding job is really a water-management system with a decorative face on it. Get the water management wrong and the prettiest siding in the world will fail early. On a March Point home, we pay particular attention to a few details that matter more here than they do a few miles inland:
Weather-Resistive Barrier and Drainage Plane
Everything starts with the water-resistive barrier behind the siding. It has to be continuous, correctly lapped shingle-style so water sheds downward and outward, and properly sealed at every penetration — hose bibs, vents, light fixtures, meter bases. On a home taking direct salt spray and driving rain, a barrier with even a small gap is a slow leak waiting to happen.
Rainscreen Gap Where It's Warranted
A small drainage gap between the siding and the weather barrier lets any water that does get behind the panels drain out and lets the wall assembly dry rather than staying damp. On exposed or heavily shaded elevations, that gap is the difference between a wall that dries out between storms and one that stays wet long enough to grow moss and start breaking down paint film and caulk.
Flashing at Every Transition
Windows, doors, decks, roof-to-wall intersections, and butt joints in the siding itself all need proper flashing — not caulk standing in for flashing. Caulk is a maintenance item; flashing is the actual water management. On a wind-exposed point, undersized or missing flashing at these transitions is the single most common cause of the hidden rot we get called out to look at.
Fastening and Clearances
Correct nail or screw type, spacing, and depth matter for wind resistance and for keeping the siding's factory finish intact at the fastener head. Ground clearance and clearance from roof lines, decks, and hardscape keep the bottom edge of the siding from sitting in standing moisture or getting hit by irrigation and splash-back — a slow but steady source of edge swelling and paint failure if it's skipped.
Why We Install Only James Hardie Fiber Cement
We don't install vinyl, LP SmartSide, primed spruce, cedar, or other fiber cement brands. That's a standard we hold across every job, not just March Point ones, and the reasoning is straightforward: fiber cement handles sustained moisture and salt exposure without the failure modes that wood-based and vinyl products are prone to, and James Hardie is the manufacturer we trust to back that performance with a real product system — not just a board.
Wood-based siding, even engineered products with treated strand board cores, depends on an intact factory coating to keep water out of the substrate. Once that coating is compromised at a cut edge, a fastener hole, or a joint that opens up, moisture gets into the wood fiber and the clock starts on swelling and rot — and a moss-prone, salt-air environment like March Point speeds that clock up. Vinyl doesn't rot, but it expands and contracts more than fiber cement, its fastening has to allow for that movement, and in direct wind exposure the panels and trim can loosen or rattle over time. Fiber cement is dimensionally stable, doesn't feed mold or moss the way wood fiber can, and stands up to direct salt spray without the coating-dependency problem.
James Hardie backs that material with ColorPlus Technology — a factory-baked finish that resists fading and chipping far better than field-applied paint — and with engineered product lines built for specific climate exposures, which is exactly the kind of detail that matters on a point exposed to open water.
The Hardie Product Lines We Use for March Point Homes
James Hardie engineers its HardieZone system around regional climate demands, and Western Washington falls into the HZ10 zone — built for sustained moisture, freeze-thaw cycling, and coastal-type exposure. For a March Point home, that's not a marketing distinction; it's the reason the product resists moisture intrusion at the plank level instead of relying entirely on paint and caulk to do the job.
| Product | Best Fit For | Why It Matters Here |
|---|---|---|
| HardiePlank Lap Siding | Most wall areas, classic or modern profiles | Primary water-shedding surface; HZ10-engineered for our climate zone |
| HardieTrim Boards | Corners, window and door casings, fascia | Dimensionally stable trim that won't cup or split under repeated wetting |
| HardiePanel Vertical Siding | Accent walls, gables, modern facades | Fewer horizontal laps to manage on wind-exposed elevations |
| ColorPlus Factory Finish | All exposed surfaces | Baked-on color resists salt-air fading and chalking better than field paint |
Our Installation Process
The process itself isn't unusual — it's the same disciplined sequence on every home — but on a March Point project we spend extra time on the inspection and prep stages because that's where exposure-related problems tend to hide.
- Walkthrough and moisture check. We look at every elevation, with extra attention to the walls taking the most wind and shade, and check for soft sheathing or existing moisture damage before we ever price the job.
- Tear-off and sheathing assessment. Old siding comes off, and we inspect the sheathing underneath. Anything soft or compromised gets addressed before new siding goes on — covering over a moisture problem just hides it.
- Weather barrier installation. A continuous, correctly lapped barrier goes on with all penetrations properly sealed.
- Flashing at every transition. Windows, doors, roof lines, and other intersections get real metal or membrane flashing, not caulk-only shortcuts.
- Hardie siding installed to manufacturer spec. Correct fastener type, spacing, and clearances, following James Hardie's published installation instructions — which is also what keeps the manufacturer's warranty valid.
- Final detailing and walkthrough. Caulking only where it belongs, touch-up as needed, and a walkthrough with the homeowner before we call it done.
Problems We Commonly See on March Point Homes
Most of the siding trouble we get called to look at on the point traces back to one of a handful of causes:
- Moss buildup on shaded or north-facing walls that traps moisture against the siding surface long-term
- Corroded fasteners where non-stainless nails or screws were used in a salt-air environment
- Caulk that was doing a flashing's job — cracked or shrunk joints at windows and trim that let water behind the wall
- Edge swelling or delamination on wood-based siding where the factory coating failed at a cut edge or fastener hole
- Paint or finish wear near ground level from splash-back and insufficient clearance
Individually, none of these are dramatic. Left alone through another wet season or two, any of them can turn into sheathing damage — which is a much bigger repair than the siding that was protecting it.
Cost Factors for a March Point Siding Project
We don't publish flat pricing because every home is different, but these are the factors that actually move an estimate up or down:
| Factor | Why It Affects the Estimate |
|---|---|
| Tear-off vs. new construction | Removing and disposing of old siding, plus any sheathing repair, adds labor |
| Home size and wall area | More square footage means more material and labor hours |
| Trim and architectural detail | Multiple gables, dormers, or decorative trim take more time than a simple rectangular wall |
| Story height and access | Second-story and hard-to-access walls require additional staging and time |
| Existing moisture damage | Rotted sheathing or framing found during tear-off has to be repaired before new siding goes on |
| Siding profile and finish | Lap width, panel style, and ColorPlus color selection affect material cost |
Keeping Your Siding Performing After Installation
James Hardie siding installed correctly needs far less upkeep than wood-based alternatives, but "far less" isn't "none" — especially in a salt-air, high-moss environment. A short annual routine keeps small issues from becoming siding-replacement issues:
- Rinse salt residue off exposed walls a couple of times a year, especially south and west-facing sides that catch the most wind
- Check caulking at windows, doors, and trim joints for cracking or gaps and have it renewed before it fails
- Watch shaded and north-facing walls for early moss or algae growth and address it before it spreads
- Keep gutters and downspouts clear so roof runoff isn't dumping extra water down the wall face
- Inspect siding and flashing after major windstorms for anything knocked loose or lifted
- Maintain clearance between siding and grade, decking, or plantings that have grown up over the years
Why a Crew That Already Works on the Point Matters
Siding installation isn't a one-size-fits-all trade. A crew that's put Hardie siding on homes throughout Skagit County — including the exposed, wind-and-water conditions specific to March Point — already knows which walls need extra flashing attention, where moss tends to start, and how the local building department expects the work documented. That's experience you can't get from a general contractor working the point for the first time, and it shows up in fewer callbacks and a job that's still doing its work in twenty years.
It also matters for the long haul. James Hardie's product warranty and our own workmanship stand behind the installation, and having a local, reachable crew means that if a question comes up five years from now, you're not trying to track down someone who did a one-off job and moved on.
If you're planning a siding project on March Point, we're happy to walk your home, look at what your specific elevations are dealing with, and put together a straightforward estimate — no pressure, no sales script. Reach out through the form below to get started.