Anacortes Siding Why March Point's Exposure Is Different
March Point sits close enough to open water that homes here take a different kind of weathering than siding a few miles inland in Anacortes proper. Salt-laden air off the Sound settles on exterior surfaces year-round, driving rain comes in sideways during winter storms, and the long, wet Skagit County shoulder seasons keep north- and west-facing walls damp for weeks at a stretch. Add the shade from mature evergreens that many March Point lots have, and you get a textbook environment for moss, algae, and slow moisture intrusion behind poorly detailed siding.
None of that is unusual for the Pacific Northwest. What it means practically is that the siding material and the installation details matter more here than they would in a drier climate. A product or a job that would hold up fine in eastern Washington can fail early on a March Point wall that never fully dries between rain events.
What This Climate Actually Demands From Siding
Break it down into the specific stresses and the picture gets clearer:
- Salt air accelerates corrosion of fasteners, flashing, and any metal trim components — and it degrades finishes that aren't formulated for coastal exposure.
- Driving rain tests every seam, joint, and penetration. Wind-driven water finds gaps that vertical rain would never reach.
- Extended damp periods feed moss and algae growth, especially on shaded elevations, and keep wood-based products swollen longer than they're designed for.
- Freeze-thaw cycling, while milder here than inland, still stresses any siding that has already absorbed moisture.
The material has to resist water absorption at the surface, shed it correctly at every joint, and not rely on paint film alone to keep it intact. That's the standard we hold every March Point job to.
Why We Install Only James Hardie
We standardized on James Hardie fiber cement for every home we side, and March Point is exactly the kind of site that explains why. Fiber cement doesn't swell, rot, or delaminate the way wood-based or wood-adjacent products can when they stay wet. It's non-combustible, which matters for wildfire-conscious insurance and building codes across Washington. And Hardie's ColorPlus finish is a factory-baked, multi-coat process engineered to hold color and resist fading under UV and salt exposure far longer than a field-applied paint job.
We don't install vinyl, LP SmartSide, Cemplank, Allura, primed spruce, or cedar. That's not a knock on every homeowner who has one of those products on their house — it's that we've seen how each performs over a decade or two in exactly this climate, and we'd rather stand behind one system we trust completely than offer several we have reservations about. Vinyl expands and contracts more than fiber cement and can warp under sustained heat or impact. Wood-based products need diligent maintenance to keep moisture out of their edges. Hardie, installed correctly, removes most of that risk.
HZ5: The Product Line Built for This Region
James Hardie engineers its siding in climate-specific "HZ" formulations. Western Washington, including Skagit County, falls into the HZ5 zone, which is formulated for regions with sustained moisture exposure and freeze-thaw activity. HZ5 boards are engineered with different moisture-management properties than the versions sold in the desert Southwest or the humid Gulf Coast. Using the correct HZ designation for March Point's climate isn't a marketing detail — it's the difference between a product that's suited to the site and one that technically works but isn't optimized for it.
Choosing the Right Hardie Products for a March Point Home
Most homes here end up with a combination of products rather than a single board style:
| Product | Best Use | Why It Fits This Area |
|---|---|---|
| HardiePlank lap siding | Primary wall coverage | Traditional look, proven water-shedding lap profile, wide color range |
| HardiePanel vertical siding | Accent walls, gables, modern facades | Clean lines, fewer horizontal seams for water to track along |
| HardieTrim boards | Corners, window and door surrounds | Consistent expansion rate with the field siding, resists moisture at high-exposure edges |
| HardieSoffit panels | Eaves and overhangs | Vented options help manage attic moisture in a damp climate |
Color selection matters too. ColorPlus finishes are baked on in a controlled factory environment rather than sprayed on site, which gives more consistent coverage and better long-term fade resistance — a real advantage on south- and west-facing walls that take the most sun and salt exposure.
What a Correct Installation Actually Involves
Fiber cement siding is only as good as the installation behind it. Most siding failures we're called to diagnose on older homes trace back to installation shortcuts, not the material itself. A correct James Hardie install includes:
- Proper weather-resistive barrier installed and lapped correctly before any siding goes up.
- Rainscreen or drainage gap where conditions call for it, so any water that gets behind the siding has somewhere to drain and dry instead of sitting against the sheathing.
- Correct fastener type, spacing, and penetration depth — Hardie specifies these precisely, and getting them wrong voids warranty coverage and invites cracking.
- Flashing at every horizontal joint, window, door, and roofline transition — this is where driving rain actually gets in if it's going to get in at all.
- Correct clearances from grade, roofing, decks, and patios, so siding isn't sitting in standing water or trapped moisture.
- Factory-cut or properly sealed field cuts to keep raw edges from absorbing water.
Skip any one of these and you can still end up with a house that looks like a Hardie install but doesn't perform like one.
Our Process, Start to Finish
For a March Point job, our process runs the same way on every home:
- Walkthrough and assessment — we look at existing siding condition, moisture staining, trim and flashing details, and any areas where past water intrusion has already caused damage.
- Written estimate — a clear breakdown of product selection, scope, and price, with no vague allowances.
- Tear-off and inspection — once old siding comes off, we check sheathing and framing for rot or damage before anything new goes up. This is often where hidden problems from a prior install surface.
- Weather barrier and drainage plane installation — the unglamorous part that determines how the house performs for the next 30 years.
- Hardie installation to manufacturer spec — correct fasteners, flashing, and clearances throughout.
- Final walkthrough — we go over the finished job with the homeowner before calling it done.
Cost Factors for a March Point Siding Job
Every home is different, but the same variables drive price on most jobs in this area:
| Factor | Why It Matters |
|---|---|
| Existing siding removal | Tear-off, disposal, and any sheathing repair add labor and material cost |
| Home size and wall complexity | More corners, dormers, and roof lines mean more trim, flashing, and cutting |
| Product mix | Plank vs. panel vs. shingle-style Hardie products carry different material costs |
| Access and site conditions | Steep lots, limited staging area, or mature landscaping can affect labor time |
| Moisture or rot repair | Damaged sheathing or framing found during tear-off needs to be addressed before new siding goes on |
We won't quote a number without seeing the house, but we're happy to talk through rough ranges and what drives them during a free estimate visit.
Living With Hardie Siding in a Moss-Prone Climate
Fiber cement is low-maintenance, but "low" isn't "none," especially with the moss and algae pressure common on shaded March Point lots. A short annual routine keeps a Hardie install looking and performing the way it should:
- Rinse siding annually with a garden hose and soft brush — avoid high-pressure washing, which can force water behind joints and damage the finish.
- Keep gutters clear so overflow doesn't run down and sit on wall surfaces.
- Trim back vegetation and tree limbs that keep walls shaded and damp longer than necessary.
- Check caulking at trim and penetrations every year or two and re-caulk where it's cracked or pulled away.
- Address any moss or algae growth early with a gentle cleaner rather than letting it establish.
None of this is heavy work, but skipping it in a climate like this one shortens the life of even a correctly installed product.
Why Local Experience on This Specific Area Matters
March Point's coastal exposure isn't identical to a job three miles inland in Anacortes, and it's certainly not the same as a job on the other side of the Cascades. A crew that already works this stretch of Skagit County knows which elevations take the worst of the wind-driven rain, how much shade a given lot is likely to hold onto through the wet season, and where salt exposure tends to hit hardest. That experience shows up in small decisions — flashing details, product selection, drainage planning — that a generic installation approach can miss.
If your March Point home needs new siding, or you're planning ahead for a project down the road, we'll walk the house with you, explain what we see, and put together a straightforward, no-pressure estimate using the form below.