Birch Bay Two Fiber Cement Products, One Standard
Allura and James Hardie both make fiber cement siding, and on paper they look similar: both are cement-based composite boards designed to outlast wood and resist fire better than vinyl. If you've been shopping for siding in Birch Bay or anywhere else in Whatcom County, you've probably seen both names come up, sometimes from the same supplier. We get asked fairly often why we only install James Hardie and won't quote Allura, even when Allura is priced lower. It's a fair question, and the honest answer isn't that Allura is a bad product. It's that after years of installing fiber cement on homes exposed to Puget Sound weather, we decided to standardize on one manufacturer we trust completely rather than switch between two similar-but-different systems.
What Allura Gets Right
Allura fiber cement is a legitimate product. It's non-combustible, it holds paint better than wood, and it resists the pests and rot that plague cedar siding. For a lot of contractors around the country, it's a perfectly reasonable choice, and we're not going to pretend otherwise. Our decision to not install it isn't about calling the product defective. It's about the specific combination of factors that matters most in a marine climate like ours: factory finish quality, warranty structure, and the depth of engineering behind climate-specific product lines.
Why Our Climate Makes the Difference Bigger Than It Looks
Birch Bay sits right on the water, and that changes what siding actually has to survive. Salt air accelerates corrosion on fasteners and trim, driving rain off the Strait pushes moisture into every gap and seam, and our long moss season means anything with texture or shadow lines holds green growth for months if the finish doesn't shed water and resist mildew well. This isn't a climate where a "good enough" fiber cement product quietly underperforms for a few years before anyone notices. It shows up fast, usually as chalking, color fade at seams, or moss creeping into caulk lines that weren't sealed to spec.
James Hardie builds region-specific HZ5 product lines engineered around exactly these conditions: moisture behavior, freeze-thaw cycling, and high-moisture climates. Allura has moved toward similar regional engineering over time, but we've built our entire installation process, flashing details, and fastener specs around Hardie's HZ5 requirements specifically. Mixing systems means retraining crews on different manufacturer installation instructions, different expansion gaps, and different warranty fine print, for a product line we have less long-term field experience with in this exact environment.
The Factory Finish Question
This is where the two products diverge the most in practice. James Hardie's ColorPlus finish is baked on in a factory process specifically engineered to resist UV fade and hold color consistency over decades, and it comes backed by its own dedicated finish warranty separate from the substrate warranty. Allura offers factory-finished options as well, but the coating technology, warranty terms, and track record differ from what we've come to rely on with ColorPlus. In a coastal environment where siding faces intense UV reflection off the water combined with constant salt exposure, the factory finish is doing as much work as the board itself. We didn't want to install a product where we couldn't stand fully behind the finish warranty the way we can with Hardie.
Warranty Structure Matters More Than It Seems
Every fiber cement manufacturer offers a warranty, but the details matter: what's covered, whether it's transferable to a new homeowner, and how claims actually get handled in practice. James Hardie's warranty structure, paired with certified installation, gives homeowners a clear, well-documented path if something goes wrong, and that warranty transfers if the home sells, which matters a lot on the Whatcom County coast where properties change hands often. We wanted to be able to tell every customer, without hedging, exactly what their warranty covers and how it's honored. Standardizing on one manufacturer lets us do that with confidence instead of explaining two different sets of terms depending on which product ended up on the wall.
Installation Consistency Is a Real Cost
There's also a practical side to this that has nothing to do with product quality. Every fiber cement manufacturer has its own nailing patterns, gapping requirements, flashing details, and cutting specifications. Fiber cement is unforgiving of installation mistakes; get the gaps or fastening wrong and you create the exact moisture entry points that cause problems in a wet climate. A crew that installs one system daily, day in and day out, makes fewer mistakes than one switching between manufacturer specs from job to job. We chose to get deeply good at one system rather than reasonably good at two.
Where This Leaves Homeowners
- Allura is a legitimate fiber cement product used successfully by contractors elsewhere
- Our decision is about our own standardization, installation consistency, and finish/warranty confidence — not a claim that Allura fails in the field
- James Hardie's HZ5 line and ColorPlus finish are what we've built our process and expertise around for this specific coastal climate
- A transferable, well-documented warranty matters in a market where homes change hands regularly
If you're comparing siding options for a home in Birch Bay or anywhere in Whatcom County, we're glad to walk you through what we install and why, with no pressure either way. Reach out for a free estimate and we'll take a look at your home's specific exposure and give you a straight answer.