Bellingham One Product, One Standard
We get asked this a lot: why does a siding contractor in Whatcom County only install one brand? The honest answer is that we got tired of repairing siding failures a few years after installation, and we traced almost all of them back to the material itself, not the crew that hung it. James Hardie fiber cement is the one product we've found that consistently holds up to what Bellingham weather does to a house over 20, 30, 40 years. So that's what we install. Nothing else leaves our trucks.
What Fiber Cement Actually Is
James Hardie siding is made from Portland cement, sand, and cellulose fiber, cured into dense, rigid boards and panels. It is not plastic (like vinyl), not wood-fiber composite (like LP SmartSide), and not solid wood (like cedar). That composition matters because it's non-combustible, dimensionally stable, and doesn't feed moisture the way organic materials do. It won't rot, it won't attract carpenter ants, and it doesn't swell or delaminate the way engineered wood products can when water finds a seam.
Built for This Specific Climate
Bellingham sits right where marine air, near-constant winter drizzle, and a moss season that can run eight months out of the year all converge on a house at once. Add in salt-laden air near Bellingham Bay and driving rain off the Sound, and you've got a climate that punishes any siding with a weak point at the seams, fasteners, or finish. James Hardie's HZ5 product line is engineered specifically for climates like ours — colder, wetter regions where moisture cycling and freeze-thaw are real concerns, as opposed to their HZ10 line built for hot, dry, high-UV markets. We spec HZ5 on every Whatcom County job because it's the right tool for this particular weather, not a generic national default.
The Product Lines We Install
- HardiePlank lap siding — the standard horizontal siding for most homes, available in several textures including smooth, cedarmill, and beaded options.
- HardiePanel vertical siding — used for board-and-batten looks and modern facades.
- HardieShingle siding — a shingle profile for homes wanting a cedar-shake look without the maintenance cedar demands.
- HardieTrim boards — matching trim so the whole envelope, not just the field siding, is fiber cement.
ColorPlus Factory Finish
Most of what we install uses Hardie's ColorPlus finish — color baked on at the factory under controlled conditions, rather than field-painted after installation. This matters more here than in drier climates, because a factory-cured finish resists the fading, mildew growth, and moss staining that a field-applied coat is more prone to when it's rarely fully dry between rain events. ColorPlus finishes carry their own multi-year warranty coverage against fading and peeling, separate from the substrate warranty.
Warranty Structure
James Hardie backs its siding with a 30-year non-prorated limited warranty on the substrate for residential installations, and the ColorPlus finish carries its own separate coverage. Warranties are transferable to subsequent homeowners within the coverage terms, which is worth something if you sell the house in ten or fifteen years — it's a point buyers' inspectors do sometimes ask about.
Installation Is Not Optional Detail Work
Fiber cement only performs as designed when it's installed to Hardie's published specifications — correct clearances off grade and roof lines, proper fastener placement, caulking at the right joints and not others, and rain-screen or drainage plane details appropriate to our rainfall totals. Warranty claims are frequently tied to installation error, not product failure, which is exactly why we treat installation method as seriously as product selection. A great product installed loosely will still cause you problems in Bellingham's wet winters.
Why We Don't Install Other Products
Vinyl, LP SmartSide, Cemplank, Allura, primed spruce, and cedar all have legitimate uses and loyal customers elsewhere. We simply don't install them, and we've written separate pages explaining our specific reasoning on each — generally centered on moisture behavior, maintenance burden, or long-term performance in exactly the kind of marine, high-rainfall environment Bellingham and the rest of Whatcom County sit in. Standardizing on one product lets our crews get genuinely expert at one installation spec rather than average at six.
Cost Expectations
James Hardie siding costs more upfront than vinyl and is generally comparable to or somewhat above engineered wood siding, reflecting the material cost and the labor involved in cutting and finishing fiber cement correctly. Most homeowners recover that difference through lower repainting and repair costs over the life of the siding, but we'd rather you go in with realistic expectations than a lowball number.
If you're weighing siding options for a home in Bellingham or elsewhere in Whatcom County, we're happy to walk your specific house, talk through which Hardie product and profile fits it, and give you a straightforward, no-pressure estimate.