Anacortes Exterior Siding Built for March Point's Waterfront Exposure
March Point sits out on the water, and that location cuts both ways. The views are part of why people love living there, but that same exposure means homes take a steady beating that inland Anacortes and Skagit County properties simply don't see as much of. Salt-laden air off the bay accelerates corrosion on anything metal, wind-driven rain finds every gap in a wall assembly, and the region's long, damp shoulder seasons keep siding wet for weeks at a stretch. Add in a moss season that can run from fall through spring, and you have a climate that punishes siding installed with shortcuts.
We install siding for homes across Anacortes and Skagit County, and March Point jobs get treated differently from the start. The material selection, the flashing details, the fastener spec, and the sequencing all account for a marine environment — not a generic Pacific Northwest install.
What Salt Air, Driving Rain, and Moss Actually Do to a Wall
Salt Air
Airborne salt is corrosive to exposed metal — fasteners, flashing edges, trim connectors — and it accelerates the breakdown of coatings that aren't formulated to resist it. On a home near the water, the wrong fastener or an under-protected flashing detail can start corroding years before it would inland, and once a fastener head fails, water gets a direct path into the wall.
Driving Rain
Wind off the water doesn't just push rain sideways — it pressurizes it against the wall, forcing moisture into laps, seams, and penetrations that would stay dry in a calmer setting. Siding systems that rely on caulk and face-sealing alone tend to fail faster here, because driving rain finds the one seam that isn't perfectly sealed.
Moss Season
Shade, moisture, and mild temperatures are exactly what moss needs, and March Point gets all three for a large part of the year. Moss holds water against a wall surface far longer than open air would, which keeps siding damp, encourages surface breakdown on materials that aren't dimensionally stable, and stains finishes that aren't factory-cured to resist it.
What Correct Siding Installation Involves Here
A siding job that will actually hold up on March Point isn't just nailing panels to a wall. It's a system, and every layer of that system has to be right.
- Sheathing inspection: Old siding comes off and the sheathing gets checked for rot, delamination, or hidden moisture damage before anything new goes up — covering a problem is worse than finding one.
- Weather-resistive barrier: A properly lapped and taped water-resistive barrier goes over the sheathing, shingle-style, so any water that gets past the siding has a way to drain instead of a place to pool.
- Rainscreen gap: A furring strip or drainable wrap creates a ventilated gap behind the siding, letting bulk water drain and the wall assembly dry instead of staying saturated — this matters more on a wind-exposed, high-rainfall site than almost anywhere else in the county.
- Flashing at every penetration: Windows, doors, hose bibs, vents, and deck ledgers all get flashed to shed water outward and downward, not just caulked and hoped for.
- Corrosion-resistant fasteners: Fastener spec matters on any coastal job — the wrong fastener is a slow leak waiting to happen.
- Manufacturer-spec gaps and clearances: Proper clearance from grade, decks, and roof lines keeps splash-back and standing moisture away from the siding's bottom edge.
Why We Install James Hardie Fiber Cement Exclusively
We don't install vinyl, LP SmartSide, primed spruce, cedar, or other fiber cement brands. That's a deliberate standard, not a lack of options, and it's especially relevant on a site like March Point.
Vinyl siding is affordable and low-maintenance in mild conditions, but it's a thin material that expands and contracts with temperature swings, and its face-sealed seams are more dependent on perfect installation to keep driving rain out. In a wind-exposed marine setting, that margin for error shrinks.
Wood-based products — cedar and primed spruce — need real, ongoing maintenance to perform: refinishing, caulk checks, and vigilance against moisture intrusion and moss staining. In a climate with this much sustained dampness, that maintenance burden goes up, not down, and a missed cycle can mean rot that's expensive to find and fix.
LP SmartSide uses an engineered wood strand core that performs well when it's kept dry and coated as specified, but any wood-based core is more sensitive to sustained moisture exposure than fiber cement is — and sustained moisture is exactly what March Point delivers for a large part of the year.
James Hardie fiber cement is non-combustible, dimensionally stable in wet-dry cycling, and finished with a factory-applied ColorPlus coating that's baked on and warranted against fading and peeling — a real advantage on a site where sun, salt, and moisture all work on a finish simultaneously. Hardie also engineers specific product lines (HZ5) for regions with more moisture exposure, which is the right starting point for a home this close to the water.
Siding Material Comparison for a Marine Environment
| Factor | James Hardie Fiber Cement | Vinyl | Cedar | LP SmartSide |
|---|---|---|---|---|
| Moisture behavior | Dimensionally stable, non-combustible core | Doesn't rot, but seams are face-sealed | Absorbs moisture, prone to rot without upkeep | Wood-strand core sensitive to sustained wetting |
| Salt air / corrosion resistance | Cement core unaffected; fasteners spec'd for coastal exposure | Panel unaffected; hardware can corrode | Fasteners and coatings degrade faster near salt air | Fasteners and coatings degrade faster near salt air |
| Moss and staining | Factory ColorPlus finish resists staining | Can stain; limited refinishing options | Absorbs moisture, holds moss and staining | Field-applied coatings need reapplication |
| Maintenance | Occasional wash; no refinishing needed with ColorPlus | Low, but limited repair/color options | Regular refinishing and sealing required | Periodic coating maintenance required |
| Fire resistance | Non-combustible | Melts/deforms under heat | Combustible | Combustible |
Our Process on a March Point Job
1. On-Site Assessment
We walk the exterior, check current siding condition, look for signs of past moisture intrusion, and note exposure factors specific to the lot — wind direction, shade patterns that feed moss growth, and proximity to the water.
2. Removal and Sheathing Check
Old siding comes off in sections so sheathing can be inspected and, if needed, repaired before it's covered again. This is the point where hidden problems get caught instead of buried.
3. Water Management Layer
Weather-resistive barrier, flashing, and rainscreen components go in per manufacturer and code requirements, with extra attention to penetrations and any area with direct wind-driven rain exposure.
4. Hardie Installation
Panels or planks go up per James Hardie's installation instructions — correct fastener pattern, correct clearances, correct joint treatment — because a product engineered for climate resistance only performs that way when it's installed to spec.
5. Final Inspection
We walk the finished exterior checking caulk lines, trim details, and clearances before calling the job complete.
Why Local Experience on March Point Matters
A crew that's already worked homes on March Point isn't guessing about how the site behaves. We've seen how wind comes off the water at different exposures, which sides of a house hold moss longest, and where driving rain tends to concentrate. That translates into flashing and fastener decisions made from experience, not a generic checklist — and on a site with this much exposure, that difference shows up in how the siding performs ten and twenty years out, not just on install day.
Living With Fiber Cement Siding on March Point
Once James Hardie siding is installed correctly here, upkeep is straightforward: an occasional rinse to clear off salt residue and moss spores, a visual check after major storms, and prompt attention if a gutter or downspout starts overflowing onto a wall section. The ColorPlus finish means there's no repainting cycle to manage, which matters on a home where the marine environment would otherwise be hard on a field-applied coating.
- Ask whether the crew inspects sheathing before re-siding, not just over it
- Confirm a rainscreen or drainable wrap is part of the assembly, not face-sealed siding alone
- Ask what fastener type is spec'd for a coastal / salt-air site
- Confirm flashing details at every window, door, and penetration are part of the scope
- Ask whether the installer is James Hardie trained or certified for the specific product line
- Get the manufacturer warranty terms in writing, including what voids them
If you're planning a siding project on March Point, we're happy to take a look at the home, talk through what the site's exposure means for the job, and put together a free, no-pressure estimate.