Sudden Valley Siding One Product, On Purpose
We get asked fairly often why we don't offer a menu of siding brands. The honest answer is that we made a decision years ago to install James Hardie fiber cement siding exclusively, and nothing else. Not because every other product is worthless, but because after years of tear-offs and re-sides around Sudden Valley and the rest of Whatcom County, we kept seeing the same failure patterns on the same categories of material — and we got tired of installing products we didn't fully believe in.
This page explains the reasoning, not the sales pitch.
What Sudden Valley Homes Are Actually Up Against
Sudden Valley sits against Lake Whatcom, tucked into forest, which sounds gentle but creates its own punishment cycle for siding. You've got moisture that lingers under tree cover long after the rain stops, moss and algae that colonize anything porous, and a marine-influenced climate pulling in damp air off the Sound for a good chunk of the year. Add driving rain events that hit siding at an angle, and you have a material stress test that runs nearly twelve months a year.
Cladding on this property needs to shed water reliably, resist swelling and rot at the butt joints and bottom courses, and hold a finish without chalking or trapping moss spores in a fuzzy surface texture. That's a narrow set of requirements, and it rules out a surprising number of popular siding products before you even get to price or looks.
Fiber Cement, Plainly Explained
James Hardie siding is made from cement, sand, and cellulose fiber, cured into a dense, stable board. It is not a wood product with a coating, and it is not a plastic. That matters here in three concrete ways:
- It won't rot. There's no organic wood fiber structure for moisture to break down over time.
- It's non-combustible. Fiber cement doesn't contribute fuel to a fire, which matters to insurers and to homeowners near wooded lots.
- It holds its shape. It doesn't swell and shrink with humidity swings the way wood-based products can, which keeps paint and caulk joints intact longer.
Built for This Specific Climate: The HZ5 Line
James Hardie engineers its siding by climate zone, and the HZ5 product line is formulated for regions with significant moisture exposure — which is exactly what Whatcom County delivers. It's a meaningful distinction from a generic, one-size-fits-all siding board. We spec HZ5 on Sudden Valley homes specifically because it's built for the wet-season reality here, not a drier inland climate.
ColorPlus: Factory Finish vs. Field Paint
A large share of siding problems we see aren't really about the substrate — they're about the finish failing first. ColorPlus is Hardie's factory-applied finish, baked on under controlled conditions before the boards ever reach the job site. That gives you a more uniform, UV-resistant, and consistent finish than siding painted in the field after installation, and it's backed by its own finish warranty separate from the substrate warranty. In a moss-prone, damp environment, a finish that resists fading and holds up to repeated wash-downs is not a cosmetic detail — it's part of the maintenance plan.
The Product Lines We Install
| Line | Typical Use |
|---|---|
| HardiePlank lap siding | Primary wall cladding, multiple exposure widths and textures |
| HardiePanel | Vertical siding, modern facades, accent walls |
| HardieShingle | Staggered or straight-edge shingle profiles for architectural detail |
| HardieTrim | Corner boards, fascia, and window/door trim to match |
The Warranty That Comes With It
James Hardie backs its siding with a transferable limited warranty on the substrate, and ColorPlus finishes carry their own separate finish warranty. Transferability matters in a place like Sudden Valley, where homes change hands and buyers want documentation that the exterior was done right and is still covered.
Why Installation Discipline Matters as Much as the Product
Fiber cement only performs as designed when it's installed to Hardie's published specifications — correct fastener placement, proper clearances at grade and roof lines, factory-mitered or properly caulked joints, and flashing details that actually shed water instead of trapping it. We install one product exclusively in part because it lets our crews build deep, repeatable expertise in exactly these details, rather than switching installation methods and quirks from job to job across five different brands.
Why We Don't Diversify
We don't install LP SmartSide, vinyl, Cemplank, Allura, primed spruce, or cedar — not because we think every homeowner who has one of those products made a mistake, but because we've chosen to stand behind one system we can install to spec every time, warranty every time, and explain honestly every time a homeowner asks us about it. That's the whole reason this is the only siding we put on Sudden Valley homes.
If you're weighing a siding replacement and want a straight answer about what it involves and what it costs for your home, we're happy to walk your property and put together a free, no-pressure estimate.