Whatcom County Allura Is a Real Fiber Cement Product — Let's Start There
Before explaining why we don't install it, it's worth being straight about what Allura actually is. Allura (formerly Nichiha's fiber cement line, now its own manufacturer) makes fiber cement lap siding, panels, and trim that compete directly with James Hardie in the same product category. It is not vinyl, not a composite, not a budget imitation. It's cement, sand, and cellulose fiber pressed and cured the same general way Hardie's boards are made. On paper, a lot of the spec sheet numbers look similar: comparable thickness, similar fire resistance claims, similar exposure ratings.
So this isn't a "good product vs. bad product" story. It's a story about manufacturing consistency, factory finish performance, warranty structure, and how a product behaves after fifteen winters of Whatcom County rain — not after year one, when almost every fiber cement product looks great.
Why Homeowners Ask Us About Allura
We get asked about Allura mostly because it's priced a step below James Hardie, and some regional suppliers and builders push it as a "just as good, less expensive" alternative. On a spec sheet comparison, that pitch sounds reasonable. In practice, the differences show up over time, not on day one — which is exactly why they're easy to miss during a bid comparison and hard to reverse once the siding is on the wall.
The Core Issue: Manufacturing Consistency
James Hardie has been making fiber cement siding in North America since the early 1990s and has scaled to multiple dedicated plants with tight, well-documented process controls. Allura's manufacturing footprint and track record in the U.S. market is smaller and newer. That matters for fiber cement specifically because the product is only as good as its curing consistency — inconsistent curing shows up years later as uneven moisture absorption, edge swelling, or finish failure, not as a defect you can spot at delivery.
Whatcom County's Climate Punishes Inconsistency
This is the part that's specific to where we work, not a generic manufacturer knock. Whatcom County sits in a tough spot for exterior cladding: we get salt air off Bellingham Bay and the Strait of Georgia, long stretches of driving rain off the Pacific, and a moss and algae season that can run eight or nine months out of the year on north-facing and shaded walls. Every one of those conditions is a stress test for a siding product's weakest point.
- Salt air accelerates corrosion at fasteners and joints, and it's harder on lower-quality factory finishes that don't fully seal the substrate.
- Driving rain — wind-driven, not just vertical — pushes water into laps, seams, and butt joints that a marginal installation or a less moisture-stable board won't shed as well.
- Moss and algae thrive in the shaded, damp microclimates common under our tree cover, and they hold moisture against the siding face for months at a time, which is exactly when a weak factory finish or an inconsistent substrate starts to show.
We don't install a product in this climate unless we're confident in its long-term moisture behavior, because a siding failure here doesn't show up as an obvious problem in year one — it shows up as swelling, delamination, or finish failure five to ten years in, well after the crew that installed it has moved on to other jobs.
Where Allura and James Hardie Actually Diverge
Here's how the two compare on the factors that matter most for a Pacific Northwest coastal climate, based on published manufacturer specifications and warranty documentation:
| Factor | Allura | James Hardie |
|---|---|---|
| Manufacturing history in North America | Newer, smaller domestic footprint | 30+ years, multiple established U.S. plants |
| Climate-specific engineering | General fiber cement formulation | HZ5 / HZ10 zone-specific formulations for regional moisture and freeze-thaw conditions |
| Factory finish | Factory-applied finish, less field track record | ColorPlus baked-on finish with a documented multi-decade performance history |
| Warranty structure | Limited warranty, varies by product line | Non-prorated warranty on siding (30 yr) and ColorPlus finish (15 yr), transferable |
| Installer network familiarity in our region | Less common; fewer local crews with deep install experience | Widely installed regionally, well-understood best practices |
| Upfront material cost | Generally lower | Generally higher |
Factory Finish Is Where Fiber Cement Actually Lives or Dies
Raw fiber cement is porous. It is not the fiber cement substrate itself that mostly determines how a board holds up outdoors — it's the quality and durability of the factory-applied finish that seals it. A weak finish lets moisture into the substrate at cut edges, fastener penetrations, and hairline surface cracks, and that's when you start seeing swelling, cracking, or color fade well before the board's rated lifespan is up.
James Hardie's ColorPlus finish has a long, well-documented field history — including in wet coastal climates similar to ours — with a baked-on, multi-coat process and a 15-year finish warranty separate from the substrate warranty. Allura's factory finishes are a newer entrant to the market, and while the published specs look competitive, there simply isn't the same multi-decade field record in coastal Pacific Northwest conditions to back it up. When we're the ones standing behind a job for years after installation, we'd rather bet on the product with the longer track record in exactly this climate.
Why This Isn't Just About the Spec Sheet
Two boards can have nearly identical published thickness, density, and fire ratings and still perform very differently after a decade of Whatcom County winters. Field performance — how a product actually behaves after real exposure to salt air, driving rain, and sustained moss cover — is not something a spec sheet can fully capture. That's the gap we're not willing to install into someone's home.
Installation Sensitivity Compounds the Risk
Fiber cement siding, regardless of brand, is unforgiving of installation shortcuts — improper fastening, missing gaps at butt joints, unsealed cut edges, and incorrect flashing detail all lead to moisture problems regardless of which manufacturer's board is on the wall. James Hardie invests heavily in installer training, published installation instructions specific to each climate zone, and a large network of experienced local installers who have put up thousands of squares of their product in similar conditions.
Allura is installed correctly by good crews too — but because it's a smaller share of the regional market, there are fewer installers locally who have the deep repetition with its specific handling requirements (cut-edge sealing, fastener spacing, expansion allowances) that come from installing one product thousands of times over. Installation quality is arguably the single biggest driver of whether fiber cement siding lasts 10 years or 40, and we'd rather concentrate our crews' expertise on one system we know inside and out than split it across products.
Warranty Structure: Read Past the Headline Number
Both companies publish warranties that sound reassuring in a sales conversation. The details matter more than the headline years.
- Is it prorated? A prorated warranty pays out less the older the siding gets — right when a claim is most likely to happen.
- Is the finish warranted separately from the substrate? Color fade and chalking are common failure points; a warranty that only covers the board, not the finish, leaves a real gap.
- Is it transferable? If you sell the home, a transferable warranty is a real selling point; many limited warranties are not.
- Who backs it? A manufacturer with 30+ years and multiple U.S. plants is a different kind of counterparty than a newer entrant, if you ever need to make a claim a decade from now.
James Hardie's non-prorated, transferable warranty structure — backed by a manufacturer with decades of North American production history — is a meaningfully stronger position for a homeowner than a shorter or prorated alternative, especially on a 20-to-30-year ownership horizon.
A Practical Checklist If You're Comparing Bids
If a contractor has quoted you Allura, LP SmartSide, vinyl, or another alternative alongside a James Hardie bid, these are the questions worth asking before you decide based on price alone:
- Is the warranty prorated, and does it cover the finish separately from the board?
- Is the warranty transferable if you sell the home?
- How many jobs has this specific crew installed with this specific product, in this climate?
- What's the manufacturer's documented track record in coastal, high-moisture climates like ours — not just its general spec sheet?
- Does the quoted price reflect the same board thickness, exposure, and finish quality as the Hardie quote, or is it a lower-tier comparison?
Why We Standardized on James Hardie
We made a decision as a company to install one fiber cement system and get very good at it, rather than carrying multiple product lines and installing whichever one is quoted lowest on a given job. James Hardie's HZ5 product line is engineered specifically for our moisture and climate zone, the ColorPlus finish has the longest proven field record of any factory finish in this category, the warranty is non-prorated and transferable, and our crews have installed enough of it in Whatcom County conditions — salt air, driving rain, extended moss season — to know exactly how it behaves over time. That combination is what we're willing to put our name behind.
None of this means Allura is a bad product in every application. It means that after weighing manufacturing track record, finish durability, warranty terms, and our own installation experience, we concluded James Hardie is the stronger long-term choice for homes in this specific climate — and we'd rather turn down a job than install something we're not fully confident will hold up here.
If you're weighing siding options for a home in Whatcom County, we're happy to walk through the specifics with you in person. Reach out for a free, no-pressure estimate — we'll look at your home's exposure and give you an honest read on what makes sense.