Lynden Exterior What Allura Gets Right
Allura makes a legitimate fiber cement product. It's a genuine cement-and-cellulose composite, not vinyl or engineered wood, so it shares the same basic non-combustible, rot-resistant backbone that makes fiber cement worth choosing over vinyl siding or primed wood in the first place. Allura has been in the fiber cement business for decades under a few different names, and the raw material science behind it isn't the issue. If you're comparing fiber cement to vinyl or cedar, Allura is a step up from either.
The issue for us isn't the base material. It's everything downstream of it — the finish system, the color program, the field support, and the warranty structure homeowners actually rely on ten and twenty years down the road.
Why We Don't Install It
Factory Finish vs. Field-Applied Paint
James Hardie's ColorPlus finish is baked on at the factory under controlled conditions, with a warranty that covers the finish itself, not just the substrate. Allura's color options are more often delivered as a primed product meant for field painting, or a factory finish with a shorter, thinner warranty on the coating. In a place like Lynden, where damp air off the Nooksack Valley and the Salish Sea keeps siding wet for long stretches through fall and winter, the paint film is doing as much work as the board underneath it. A weaker finish warranty means the homeowner — not the manufacturer — absorbs the cost when color starts to chalk or fade early.
Moss and Moisture Behavior in Whatcom County
Whatcom County's climate is hard on any exterior product: driving rain off the water, salt air moving inland from Bellingham Bay, and a moss season that can run eight months out of the year on north-facing walls and anything shaded by fir trees. Fiber cement in general handles moisture better than wood, but the caulking, flashing details, and finish quality around the boards still determine whether a wall stays dry or starts trapping water behind it. Hardie's HZ5 product line and installation specs are engineered specifically around Pacific Northwest wet-climate conditions — freeze-thaw cycling, prolonged moisture exposure, and moss/algae growth are built into the product testing, not an afterthought. We don't have the same confidence in Allura's climate-specific engineering for our region.
Installation Sensitivity
Fiber cement siding is only as good as the installation. Allura's product tolerances, fastening requirements, and joint detailing differ from Hardie's, which means crews have to relearn or adjust specs product to product. When we standardize on one manufacturer, our crews install the same system on every job, every time — same fastener schedule, same clearances, same flashing approach — because that repetition is what actually prevents callbacks. Splitting our install standards across multiple fiber cement brands increases the chance of a detail getting missed, and on a coastal climate like ours, a missed detail shows up as a moisture problem within a few years, not immediately.
Warranty and Transferability
James Hardie's warranty is well-documented, widely recognized by future buyers and their inspectors, and transferable if the home sells. That matters in Lynden and the surrounding Whatcom County market, where siding is a line item buyers and agents actually ask about. Allura's warranty coverage, particularly on the finish, tends to be shorter and less consistently recognized. For a homeowner making a twenty- or thirty-year exterior decision, that gap in warranty strength is a real cost, even if the upfront material price looks similar.
Why We Standardized on Hardie
We made the decision to install James Hardie exclusively because we got tired of being the crew called back to explain why a "comparable" fiber cement product wasn't holding up the same way. Hardie's HZ product lines are formulated by climate zone, the ColorPlus finish carries its own dedicated warranty, and the installation specs are documented in enough detail that our crews can execute them the same way on every house — a rambler off Front Street or a new build out toward the Guide Meridian corridor. That consistency is what lets us stand behind the work.
None of this means Allura is a bad product in the abstract. It means that after weighing finish durability, climate engineering, installation consistency, and warranty strength for a Pacific Northwest coastal climate, Hardie was the clearer long-term bet for the homes we work on.
| Factor | Allura | James Hardie |
|---|---|---|
| Finish system | Often field-painted or shorter-warranty factory finish | ColorPlus factory finish with dedicated finish warranty |
| Climate engineering | General fiber cement formulation | HZ5 line engineered for Pacific Northwest wet climates |
| Install standardization | Requires separate crew training/specs | Single spec set across all our jobs |
| Warranty transferability | Less consistently recognized by buyers | Well-documented, transferable at resale |
If you're weighing siding options for a home in Lynden or anywhere else in Whatcom County, we're happy to walk through what we saw in Allura, what we install instead, and why — no pressure, no obligation. Reach out for a free estimate and we'll give you a straight answer.