Two Fiber Cement Brands, One Decision We Made
When homeowners in Anacortes start researching siding, they usually land on two names: James Hardie and Allura. Both are fiber cement — a blend of Portland cement, sand, and cellulose fiber engineered to resist rot, pests, and fire in a way that wood and vinyl simply can't. That baseline is real, and it's why we stopped installing wood and vinyl siding altogether. But fiber cement isn't one product. It's a category, and inside that category there are real differences in how each manufacturer engineers, finishes, and backs its product. We install James Hardie exclusively. This page explains what Allura does well, where it falls short of our standard, and why that distinction matters if you're replacing siding on a home that sits a few blocks from Fidalgo Bay or out toward Guemes Channel.

What Allura Gets Right
We want to be straight with you: Allura is not a bad product. It's a legitimate fiber cement manufacturer with a real manufacturing history, and in dry, moderate climates it performs about how you'd expect fiber cement to perform. Its lap siding, panels, and trim are non-combustible, dimensionally stable compared to wood, and resistant to the kind of pest and rot damage that ends up destroying cedar and untreated spruce siding on the Anacortes waterfront. If someone tells you Allura siding is fundamentally unsound, they're overstating it. Our decision isn't about the base material — it's about everything built around it: the factory finish system, the warranty structure, and the local support network that backs the product once it's on your wall.
The Core Material Is Comparable
Both Allura and Hardie fiber cement are formulated to resist moisture intrusion, insect damage, and combustion better than wood-based siding products. Neither one will warp, cup, or feed carpenter ants the way old cedar lap siding does after a couple of decades of Skagit County rain. On that baseline, we're not going to manufacture a disagreement that doesn't exist.
Where the Trade-Offs Start: Factory Finish and Color Consistency
The first place our standards diverge is the factory finish. James Hardie's ColorPlus technology applies and bakes the finish on in a controlled factory environment, then backs it with a dedicated finish warranty separate from the product warranty. Allura offers factory-primed and some factory-finished options, but the depth of its finish line and the length of track record behind it don't match what Hardie has built over two-plus decades in wet coastal markets like ours.
That matters more here than it would in a drier inland climate. Anacortes sees salt-laden air off the bay, driving rain off the Strait, and a moss season that can run from October through April on north-facing walls. A finish system that hasn't been proven over many years in that exact combination of salt, UV, and sustained moisture is a bigger unknown than a homeowner should have to absorb on a twenty- or thirty-year exterior investment.
Field-Applied Paint Is Where Problems Start
Any fiber cement product, Allura included, can be ordered unfinished or field-painted. We avoid that path entirely regardless of brand, because field-applied paint on fiber cement is only as good as the prep, primer, and paint chemistry used on installation day — and it puts the long-term color and finish warranty in the installer's hands instead of the manufacturer's. Where Allura and Hardie diverge is that Hardie's factory finish removes that variable from the equation before the siding ever reaches a job site.
Regional Support and Product Availability in Skagit County
This is the part homeowners rarely think to ask about, and it's often the most consequential one over a twenty-year ownership horizon. James Hardie has built a dense distribution and dealer network across Western Washington, which means color-matched replacement boards, trim, and accessories are reliably stocked when a piece gets damaged or a small addition goes in five or ten years down the road. Allura's distribution footprint in the Pacific Northwest is thinner. That doesn't mean you can't get the product — it means that when you need a matching replacement plank after a tree limb comes down in a winter windstorm, you may be waiting on special order lead times instead of a local supply house.
We build our entire installation practice — our fastening details, our flashing approach, our trim profiles — around one manufacturer's engineering specs and one supply chain we know cold. Splitting that focus across two fiber cement systems doesn't serve you; it just means we know both moderately well instead of one exceptionally well.
Installation Sensitivity and Warranty Structure
Fiber cement siding is only as good as the installation behind it, and this is true of every brand, not just the ones we don't install. Improper fastener placement, missed flashing details, or wrong nailing patterns will void a manufacturer warranty on Allura just as fast as they will on Hardie. Where the two differ is in how much documentation, training infrastructure, and installer accountability exists around the product.
James Hardie has invested heavily in contractor certification, published installation detailing for high-moisture and coastal applications, and a warranty that is transferable to a new owner if you sell the house within the coverage window — a real factor for resale in a market like Anacortes where buyers increasingly ask about siding material and age. Allura's warranty coverage exists, but the transferability terms, coverage length, and claims process haven't been battle-tested in our market the way Hardie's has.
Side-by-Side: Allura vs. James Hardie HZ5
| Factor | Allura Fiber Cement | James Hardie HZ5 (Marine Zone) |
|---|---|---|
| Base material | Fiber cement, non-combustible | Fiber cement, non-combustible |
| Factory finish system | Primed and select pre-finished options | ColorPlus baked-on factory finish, separate finish warranty |
| Climate engineering | General-purpose formulation | HZ10 formulation specific to high-moisture, freeze-prone coastal regions |
| PNW distribution | Limited regional stocking dealers | Dense regional dealer and distribution network |
| Warranty transferability | Varies by product line | Transferable to new owner within coverage period |
| Contractor certification program | Limited | Established Hardie Preferred Contractor training |
| Long-term installed cost | Generally comparable to Hardie | Generally comparable to Allura |
The Moss and Salt Air Problem
North Puget Sound siding takes a specific kind of beating that inland siding never sees. Salt aerosol off Fidalgo Bay accelerates fastener corrosion and finish breakdown on lower-quality coatings. Long stretches of low-angle winter sun on north- and east-facing walls create ideal conditions for moss and algae growth, which holds moisture against the siding surface for months at a time. Add in driving, wind-blown rain that gets pushed sideways into laps and joints, and you have a climate that will expose any weakness in a finish system or an installation detail within a handful of years, not decades.
This is exactly the environment Hardie's HZ10 formulation and finish system were engineered around, and it's why we don't treat product selection as a commodity decision. A siding product that performs fine in Spokane or Yakima isn't automatically the right call in Anacortes.
What to Ask Any Fiber Cement Installer
- Is the product factory-finished, or will it be primed and field-painted on site?
- Is the finish warranty separate from the product warranty, and what does each actually cover?
- Is the warranty transferable if you sell the home?
- Can the installer show manufacturer-specific certification or training for the product they're proposing?
- Is replacement stock for this exact product line reliably available regionally, or special order only?
- Does the installation plan account for salt exposure, moss growth, and wind-driven rain specific to your lot?
Why We Standardized on Hardie
We made a business decision years ago to install one fiber cement system instead of several, and we chose James Hardie because its finish system, climate-specific product engineering, warranty transferability, and regional support all held up under the specific conditions Skagit County throws at an exterior. That's not a knock on every other fiber cement manufacturer's engineering team — it's a statement about what we could stand behind completely, install to spec every time, and defend to a homeowner ten or twenty years after the fact. Standardizing on one product also means our crews aren't relearning fastening patterns, trim details, or flashing specs between job sites. Consistency in the field is part of how we protect the warranty coverage you're paying for.
If you're comparing fiber cement products for an upcoming project, we're happy to walk through what we see in the field on both sides of that comparison — no pressure, no sales script. Reach out for a free estimate and we'll take a look at your home's specific exposure to sun, wind, and moisture before recommending anything.
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