Custer Siding Replacement Built for a Peninsula That Takes It From Every Side
Point Roberts sits on its own small peninsula at the bottom of the Tsawwassen Peninsula, cut off by the international border from the rest of Whatcom County — the only way in or out by land is through Canada. That geography isn't just a quirk of the map. It means water on nearly every side of town instead of just one, and a level of wind and salt exposure that most siding was never really designed to sit under for twenty-plus years without help from a correct installation. Add in the driving rain and long moss season that define this stretch of the Salish Sea coast, and Point Roberts asks more of an exterior wall than most homes in Whatcom County ever have to answer for.
This page is about one job specifically: replacing siding on a Point Roberts home the right way, with a product and installation matched to what this peninsula actually does to a house. We install James Hardie fiber cement exclusively, and everything below explains what that means in practice — what the climate demands, what a correct replacement involves step by step, and why a crew with real, ongoing experience out here matters more in Point Roberts than it does almost anywhere else in the county.
What Point Roberts' Location Does to a House
Water on Nearly Every Side
Most coastal towns in Whatcom County face the water in one direction. Point Roberts is different — it's bounded by Boundary Bay and open water on multiple sides, which means salt-laden marine air isn't something that shows up occasionally on a west wind, it's closer to a constant. That steady salt exposure accelerates corrosion on fasteners, flashing, and any exposed metal trim, and it wears down lower-quality factory finishes faster than a location with just one exposed face would. Material and hardware choices carry more weight here because there's less margin for a cut corner when salt air is working on a house from more than one direction at once.
Driving, Wind-Pushed Rain
Being surrounded by open water also means less shelter from wind, and wind is what turns ordinary rain into a harder problem. Storms don't just fall straight down on a Point Roberts roofline — they get pushed sideways into siding laps, window and door flashing, and the seams where a roof meets a wall. That sideways load finds gaps a rushed or generic installation leaves behind, and it's a heavier, more sustained test than a simple annual rainfall total would suggest.
A Long Moss Season
Mild temperatures and near-constant moisture add up to a moss and mildew season that runs across most of the calendar on shaded or north-facing walls. Any siding material with even a little surface porosity becomes a place for that growth to take hold, and once moss or mildew is established on a wall, it holds moisture against the surface behind it — which is where a lot of long-term siding problems actually start, not with the first bit of green.
Signs a Point Roberts Home Needs Siding Replacement
Siding rarely fails all at once. It tends to give warning signs first, and on an exposed peninsula those signs often show up earlier and more clearly than they would on a more sheltered inland property.
- Soft or spongy spots when you press on the siding, especially near the bottom of the wall or around window trim
- Visible warping, buckling, or panels that no longer sit flat against the wall
- Paint that's peeling, bubbling, or chalking faster than a normal repaint cycle would explain
- Moss, algae, or dark staining that returns quickly after cleaning
- Rust streaking around fasteners or trim, which shows up sooner this close to open water
- Gaps, cracking, or separation at seams, corners, and butt joints
- Rising energy bills or noticeably drafty interior walls, which can point to moisture-compromised insulation behind the siding
Any one of these on its own might just mean a repair. Several together, especially on a wall that faces the prevailing wind and weather, usually means the underlying material has reached the end of what it can protect the house from.
What a Correct Siding Replacement Involves
Full Tear-Off, Not a Cover-Up
Installing new siding over old is faster and cheaper, but it seals whatever moisture damage, rot, or failed flashing already exists underneath instead of fixing it. A correct replacement starts with a full tear-off down to the sheathing, which is also the only real chance to catch hidden rot or framing damage before it's covered up for another twenty years.
Water-Resistive Barrier and Flashing
Once the wall is open, a continuous water-resistive barrier goes on before anything else, with flashing integrated at every window, door, and penetration so water is directed out and down rather than trapped behind the siding. On a peninsula that takes wind-driven rain from more than one direction, this layer is doing more of the actual waterproofing work than the visible siding itself — the siding sheds most of the water, but the barrier and flashing behind it are what handle whatever gets past that first line of defense.
Fastening and Joint Detailing
Fastener type, spacing, and placement have to follow the manufacturer's specification for this climate zone, not a shortcut pattern. Butt joints, corners, and any place two pieces of siding meet need to be detailed correctly and sealed with the right materials, because those seams are exactly where wind-driven rain finds its way in on a poorly installed wall.
Factory-Applied Finish
The color and finish on Hardie siding is baked on at the factory under controlled conditions, rather than brushed or sprayed on-site after installation. That matters directly in a place with this much salt and moisture exposure, because a field-applied finish has more variables working against its long-term adhesion than a factory-cured one does.
Why We Install Only James Hardie Fiber Cement
We used to install a wider range of siding products. We stopped after years of seeing which materials actually held up in coastal, high-moisture conditions like Point Roberts' and which ones didn't. James Hardie's fiber cement is non-combustible, holds up structurally in sustained moisture without swelling or rotting the way wood-based products can, and its HZ5 product line is engineered specifically for regions with heavy moisture exposure and freeze-thaw cycling — a fit for this part of the Salish Sea coast, not a generic national spec. That's a professional standard we settled on, not a sales pitch.
| Material | How It Handles Peninsula Exposure | Where It Falls Short Here |
|---|---|---|
| James Hardie Fiber Cement | Non-combustible, dimensionally stable in sustained moisture, factory-cured ColorPlus finish | Heavier to install; requires a crew experienced with fiber cement fastening and cutting |
| Vinyl Siding | Low upfront cost, low maintenance in mild climates | Lapped, non-sealed joints aren't built to shed wind-driven rain from multiple directions; can warp under direct heat |
| Engineered Wood (LP SmartSide) | Lighter, faster to install, budget-conscious | Wood-fiber core depends on an unbroken factory coating and sealed field cuts to resist swelling in near-constant moisture |
| Cedar / Primed Spruce | Traditional appearance, real material | Organic and combustible; needs an ongoing paint or stain schedule and is especially hospitable to moss in damp conditions |
Our Siding Replacement Process
- On-site assessment: We walk the property, look at how the current siding has held up against wind, salt, and moisture, and check for hidden damage where possible before any tear-off begins.
- Written scope and timeline: A clear, itemized scope covering tear-off, water-resistive barrier, flashing, siding product, and finish — before any contract is signed.
- Tear-off and sheathing inspection: Old siding comes off completely, and we address any rot, soft sheathing, or framing issues we find before closing the wall back up.
- Barrier, flashing, and siding installation: Water-resistive barrier and flashing go on first, followed by James Hardie siding installed to manufacturer fastening and joint specifications for this climate zone.
- Final walkthrough: We review the finished work with the homeowner and go over what warranty coverage applies, both on materials and on our own installation.
Cost Factors for a Point Roberts Siding Replacement
| Factor | Why It Affects Cost |
|---|---|
| Home size and wall complexity | More square footage and more corners, dormers, or trim details mean more material and labor time |
| Extent of hidden damage | Rot or moisture damage found after tear-off adds sheathing or framing repair before new siding can go on |
| Siding profile and trim | Lap, shingle, and board-and-batten profiles carry different material and labor costs |
| Access and staging | Waterfront lots, limited driveway access, or scaffolding needs can add labor time |
| Existing water-resistive barrier condition | A barrier that's failed or was never properly installed adds scope beyond the visible siding |
These are general drivers, not a quote — every Point Roberts property carries a different combination of exposure, wall condition, and access, so we price the job after walking it, not off a phone description.
Why a Crew That Already Works Point Roberts Matters
Point Roberts isn't a place a contractor can casually add to a route. Because it's cut off from the rest of Whatcom County by the border, getting a crew, tools, and material into town means crossing through Canada and back — which takes planning around border crossing times, proper documentation for crew and vehicles, and material logistics that a contractor who's never worked out here simply hasn't dealt with before. A crew that already works Point Roberts has that logistics worked out ahead of time, so it doesn't become a source of delays or surprise costs mid-project.
Beyond logistics, there's the exposure itself. A crew that's actually installed and later inspected or repaired siding on this peninsula has seen firsthand which walls take the worst of the wind and salt, which details tend to fail first when they're rushed, and where the extra time on flashing and joint sealing genuinely pays off over the following winters. That's a different kind of knowledge than reading a spec sheet, and it shows up in how the job gets built, not just in how it's sold.
If your Point Roberts home needs a siding replacement, we're glad to come take a look and give you a straightforward, no-pressure estimate. Use the form below to get started.