Custer Homeowners in Custer occasionally ask us to quote Allura fiber cement siding alongside James Hardie. It's a fair question — Allura is a real fiber cement product, not a knockoff, and it competes on price. But after years of installing and repairing siding along this stretch of Whatcom County, we made a decision as a company: we install James Hardie exclusively. This page explains why, honestly, without knocking Allura as a product.
What Allura Gets Right
Allura fiber cement is a genuine fiber cement board — a mix of cement, sand, and cellulose fibers, pressed and cured. Like all fiber cement, it's non-combustible, resists rot, and holds up better than wood or vinyl against moisture and pests. It comes in lap, panel, and shingle profiles, and it's a legitimate step up from vinyl or engineered wood for a homeowner on a budget. We're not disputing any of that.
Why We Don't Put It On Homes Here
Our reasons come down to three things: factory finish consistency, manufacturer support in our specific climate, and long-term warranty structure — all of which matter more in Custer than they would in a dry inland climate.
Salt Air and Coastal Exposure
Custer sits close enough to the Strait of Georgia and Puget Sound that homes here take on salt-laden air and wind-driven moisture that inland siding jobs never see. Whatever fiber cement brand you choose, the paint and sealant system is what actually protects the board over the decades — the cement core is durable, but the finish is what's exposed to weather every single day. We've found the depth and consistency of factory-applied color and moisture-barrier treatments matters enormously here, and it's an area where we trust James Hardie's ColorPlus finishing process and documented field performance more than we trust the alternatives.
Driving Rain and Moisture Management
Whatcom County doesn't get gentle rain most of the year — it gets sideways, wind-driven rain that gets pushed into every lap, joint, and fastener line on a house. Fiber cement siding is only as good as how it manages that moisture at the seams and behind the board. Hardie's HZ5 product line was engineered specifically around exposure zones like ours — freeze-thaw cycling combined with sustained damp conditions — and Hardie publishes clear installation specs and climate zone guidance to match. That level of climate-specific engineering and documentation is a major factor in why we standardized on one manufacturer rather than mixing products based on which one was cheaper that month.
Moss Season
Anyone who's lived here through a full Whatcom County winter knows what "moss season" means — months of low light, high humidity, and surfaces that stay damp far longer than they would elsewhere. Moss and algae growth on siding isn't just cosmetic; sustained organic growth holds moisture against the surface and can accelerate wear at the finish level over time. Factory finish quality and consistency again become the deciding factor, and it's one more reason we didn't want to install two different fiber cement lines with two different finish specs and warranty terms on homes in the same neighborhood.
Warranty and Installer Accountability
Fiber cement is installation-sensitive — clearances, fastener placement, caulking, and flashing details all affect how the product performs over 20-plus years, regardless of brand. Manufacturer warranties are usually structured around the assumption that installation was done to spec, and the strength of that warranty — how transferable it is, what it actually covers, how the manufacturer stands behind field issues — varies by brand. We made the call to build our entire crew's training, tooling, and installation process around one system so there's no ambiguity about which spec we're installing to and which warranty backs the work. Splitting our crews' expertise across multiple fiber cement brands would mean less mastery of any one system's specific installation requirements.
Why We Standardized on James Hardie
None of this means Allura is a bad product in the abstract. It means that for the specific conditions we build in — salt air, driving rain, and a long moss season — we decided the margin mattered enough to commit to a single manufacturer rather than quoting whichever fiber cement is cheapest for a given job. James Hardie's HZ product lines are engineered for climate zones like ours, the ColorPlus factory finish holds up to the moisture and organic growth we see every winter, and the warranty structure is one we're comfortable standing behind as installers.
What This Means for Your Project
If you're comparing bids and see Allura or another fiber cement brand quoted at a lower price, that's worth understanding clearly — the material itself isn't the problem, but we've chosen not to install anything other than the one system we've built our training, warranty backing, and installation process around. We'd rather tell you that up front than quote a product we're not fully confident in for a house that has to survive Whatcom County winters for the next several decades.
| Factor | Allura Fiber Cement | James Hardie (Our Standard) |
|---|---|---|
| Core material | Cement, sand, cellulose fiber | Cement, sand, cellulose fiber |
| Climate-zone engineering | General purpose lines | HZ5 zone-specific engineering |
| Factory finish | Manufacturer-applied paint | ColorPlus baked-on finish |
| Our installation experience | Not installed by our crew | Standard product, deep crew familiarity |
If you're planning a siding project in Custer or anywhere else in Whatcom County, we're happy to walk your home, talk through what we see, and explain exactly why we'd recommend James Hardie for your specific exposure. Reach out for a free, no-pressure estimate — there's no obligation, just an honest look at what your house needs.