Anacortes Exterior Conway sits low in the Skagit River delta, in the flat farmland between Mount Vernon and Stanwood where the river fans out toward Skagit Bay. It's a different exposure than the bluffs and hillsides around Anacortes, but it's no easier on a house. Homes here sit close to the water table, catch salt-tinged air moving up off the bay, and spend a good part of the year under low cloud and steady rain. We do James Hardie siding work throughout Skagit County, and Conway is one of the areas where the low, wet, exposed setting really shows up in how siding ages — and in what it takes to get an installation right the first time.
What the Skagit Delta Climate Does to Siding
Conway's location in the delta means moisture doesn't just fall on a house here, it sits around it. Flat, low-lying ground drains slower than a hillside lot, humidity lingers longer after a storm passes, and morning fog off the river and bay is common for a good stretch of the year. Add wind-driven rain coming off open farmland with little to break it, and you get siding that stays damp longer than it would in a more sheltered spot.
The air itself carries a salt component too, pulled up from Skagit Bay and the Sound, especially on windier days. Salt-laden moisture accelerates corrosion on fasteners, flashing, and any siding material that isn't built to handle it. Combine that with tree cover and shaded north walls common on rural and semi-rural Conway lots, and you have the two things that do the most damage to an exterior over time: standing moisture and organic growth. Moss and algae take hold fast in this kind of environment and, left alone, hold water against a wall long after the rain has stopped.
Signs a Conway Home's Siding Is Losing the Fight
- Moss or dark algae streaking on shaded walls, especially north- and east-facing sides near trees
- Caulking at trim and panel joints that has cracked, shrunk, or pulled away
- Soft or spongy spots near the bottom courses of siding, close to grade or splash zones
- Peeling, chalking, or fading paint on wood siding or trim that hasn't been recoated recently
- Rust streaking below nail heads or metal flashing, a sign fasteners aren't holding up to the air out here
- Visible gaps or warping where siding boards have swelled and shrunk through repeated wet-dry cycles
Why We Only Install James Hardie Fiber Cement Here
We don't install vinyl, LP SmartSide, Cemplank, Allura, primed spruce, or cedar. That's a standard, not a sales pitch, and it comes from watching how materials actually hold up in exactly the kind of setting Conway offers. Vinyl isn't a water barrier by itself — it relies entirely on what's behind it, and it can go brittle with age and UV exposure, which matters on a property that takes both sun and driving rain in the same season. Wood siding, whether cedar or primed spruce, needs a repainting cycle homeowners have to keep up with, and any lapse lets moisture into end grain and joints, which is where rot starts. LP SmartSide is engineered wood, and engineered wood still depends on its factory coating and careful field sealing at every cut edge to keep water out over the long run.
James Hardie fiber cement is non-combustible, dimensionally stable, and doesn't swell or rot the way wood-based products can. It's factory-finished with ColorPlus coating, which resists fading, cracking, and peeling far better than field-applied paint — a real advantage in a climate that punishes coatings with UV, salt, and constant moisture cycling. For Conway specifically, that stability matters: a material that doesn't move much with moisture is a material that keeps its seals and caulk lines intact longer, which is half the battle in a delta climate.
Hardie Product Lines We Use on Conway Homes
| Product Line | Best For | Why It Fits Conway |
|---|---|---|
| HardiePlank Lap Siding | Most homes, farmhouse and traditional styles common in the area | Smooth or cedar-textured finishes, wide ColorPlus color range |
| HardiePanel Vertical Siding | Outbuildings, accent walls, gable ends | Clean lines, fewer horizontal laps to seal |
| HardieTrim Boards | Window surrounds, corners, fascia | Holds paint and shape far better than wood trim in constant damp conditions |
| HZ5 Climate Engineered Formulation | The Pacific Northwest generally, including low, wet delta lots | Formulated for freeze-thaw and high-moisture regions rather than a single all-purpose mix |
What a Correct Installation Involves in a Floodplain Setting
The material only performs as well as the assembly behind it, and that matters more on a low, damp lot than almost anywhere else. A correct Hardie installation starts with the water-resistive barrier — a continuous, properly lapped weather barrier installed shingle-style so water always sheds outward and down, never into a seam. Flashing at every window, door, and roof-wall intersection has to integrate with that barrier, not just sit on top of it, because that's where wind-driven rain finds its way in if a detail is rushed.
We also pay close attention to clearance: siding held off the ground, decks, and roof lines by the margin Hardie specifies, so splash-back and standing moisture near grade don't sit against the bottom edge of the boards. On a delta lot where humidity lingers, a rain screen gap behind the siding — a small air space that lets moisture that does get behind the cladding actually dry out — is worth the extra step rather than skipping it. Fastening pattern, nail placement, and butt joint treatment all follow Hardie's published specs, because that's what keeps the manufacturer's warranty valid and what actually keeps water out over 20 or 30 years, not just the first few.
Our Process, Start to Finish
We start with an on-site inspection of the existing exterior, checking not just the visible siding but what's happening underneath — sheathing condition, existing flashing, and any signs of moisture that got in before now. On a Conway property, we're also looking at grading and drainage around the foundation, since standing water near the house feeds the same problem from below that damp air feeds from above.
From there it's tear-off, a check of the sheathing for rot or soft spots before anything new goes up, correct installation of the water-resistive barrier and flashing, then the Hardie siding and trim itself. We finish with a walk-through so the homeowner sees the completed work and understands what was done and why, particularly around any areas that needed extra attention.
Why Hiring a Crew That Already Works Conway Matters
A lot of siding problems in this area don't trace back to bad material — they trace back to installation details that were fine for a dryer, more sheltered climate but not for a low delta lot with salt air and standing humidity. A crew that already works Conway and the surrounding Skagit Valley knows to treat clearance, flashing, and rain screen details as non-negotiable here, not optional upgrades. That local familiarity also extends to permitting through Skagit County and to reading a property correctly — knowing which walls take the worst of the weather, where moss pressure will be highest, and where a past owner's quick fix is likely to be hiding a bigger issue.
What Drives the Cost of a Conway Siding Project
Every project is different, but a few factors consistently move the price on siding jobs in this area. None of these are fixed numbers — they're the things worth discussing on a walk-through before any estimate is finalized.
| Factor | Why It Matters |
|---|---|
| Extent of existing damage | Rot or moisture-damaged sheathing found during tear-off adds repair work before new siding can go on |
| House size and wall complexity | More corners, dormers, and trim details mean more cutting, flashing, and labor time |
| Siding profile and finish chosen | Plank width, texture, and ColorPlus color selection affect material cost |
| Site access | Rural Conway lots, outbuildings, and long driveways can affect staging and equipment access |
| Drainage and grading work | Some low-lying properties benefit from grading adjustments alongside the siding work itself |
Living With Hardie Siding in a Delta Climate
Once it's installed correctly, James Hardie siding needs relatively little from a homeowner — no repainting cycle, no annual sealing. What it does benefit from is the same basic care any exterior should get in this climate: keeping gutters clear so water isn't overflowing onto walls, trimming back vegetation that's shading a wall and feeding moss growth, and an occasional gentle wash to keep algae from building up on shaded sides. None of that is unique to Hardie, but a stable, factory-finished material makes that maintenance simpler because there's no coating to touch up in between.
If your Conway home's siding is showing its age, or you're planning a project and want it done to a standard built for this specific climate, we're glad to take a look and walk you through what we'd recommend. There's no pressure and no obligation — just a straightforward look at your home and an honest estimate.