Blaine Cemplank Is Fiber Cement Too — So Why Not Use It?
We get this question a lot, usually from homeowners who've already done some research and noticed that Cemplank is, in fact, a fiber cement siding product — same basic recipe of cement, sand, and cellulose fiber as what we install. It's not vinyl, it's not a wood substitute cutting corners, and it holds up better than most of the budget siding options sold around Whatcom County. We're not going to pretend otherwise. But after years of installing and standing behind siding on homes here in Blaine, we made a decision to install one fiber cement product exclusively — James Hardie — and we think homeowners deserve a straight answer as to why.
What Cemplank Gets Right
Fiber cement as a category is a legitimate upgrade over wood and vinyl. It doesn't rot, it resists pests, and it's non-combustible, which matters anywhere but especially in a region where wildfire smoke seasons have crept further north each year. Cemplank has been on the market a long time, it's a recognizable brand, and plenty of it is sitting on homes performing adequately. If cost were the only variable, it would be a reasonable choice for a lot of projects.
Where the Trade-Offs Show Up
Our reservations aren't about whether Cemplank is "bad" siding. They're about the specific things that matter on a house 100 yards from Boundary Bay versus a house in a dry inland climate, and about the parts of the ownership experience that only show up five, ten, or twenty years down the road.
- Factory finish and repaint cycle: Hardie's ColorPlus finish is a baked-on, multi-coat factory process specifically engineered to hold color and resist fading, chipping, and cracking longer than field-applied or standard-primed finishes. In a climate like Blaine's, with driving rain off the Strait of Georgia and salt air rolling in off the water, a weaker factory finish means an earlier repaint — and repainting fiber cement isn't a weekend job.
- Warranty structure: Hardie backs its siding with a 30-year, non-prorated, transferable limited warranty, and a separate warranty on the ColorPlus finish itself. Warranty terms across the broader fiber cement market vary, and some are prorated, meaning the payout shrinks the longer you've owned the product — right around the time coastal weather has actually done its work on the siding.
- Climate-specific engineering: Hardie manufactures regionally engineered formulations (its HZ5 product line, for example) built around the moisture exposure of Pacific Northwest climates specifically, rather than a single national formulation. Given how much of the year Whatcom County spends under low clouds and steady rain, that's not a marketing detail to us — it's the difference between siding engineered for our actual weather and siding engineered for the average of everywhere.
- Moss and algae exposure: Blaine's long wet season and heavy tree cover mean north-facing walls and shaded elevations fight moss and algae growth almost year-round. Finish quality and surface texture affect how well siding resists organic growth and how easy it is to clean without damaging the coating. A weaker finish means more aggressive cleaning, more often, which shortens its own lifespan.
- Installation consistency: Fiber cement only performs to spec when it's installed to spec — correct clearances, fastener patterns, caulking practices, and flashing details. We've built our entire install process, training, and warranty backing around one manufacturer's system. Splitting that across multiple product lines means more room for the kind of small installation mismatches that cause moisture problems later.
A Side-by-Side Look
| Factor | What It Means Here |
|---|---|
| Factory finish | Determines how soon you're repainting under Blaine's rain and salt exposure |
| Warranty structure | Non-prorated coverage matters more the longer coastal weather works on the siding |
| Regional formulation | Siding engineered for Pacific Northwest moisture vs. a single national spec |
| Moss/algae resistance | Affects how often you're washing walls in a county with a long wet season |
None of this means Cemplank fails on every house. It means that when we weighed the finish quality, the warranty terms, and the regional engineering against what we see driving rain, salt air, and a nine-month moss season do to a home here, we couldn't justify standing behind two different systems with two different risk profiles. We chose to put our name behind one product we trust completely rather than offer a lower-cost option we'd have reservations about recommending.
Why We Install Hardie Instead
James Hardie's ColorPlus factory finish, non-combustible composition, HZ5 formulation for our climate zone, and 30-year non-prorated transferable warranty line up with what actually happens to a house in Whatcom County over a couple of decades — not just what happens in the first few years. It's why every siding job we take on, from a small addition to a full re-side, uses the same product line, installed by crews who only install that one system.
If you're comparing siding options for a home in Blaine and want the honest version of these trade-offs — not a sales pitch — we're happy to walk through what your specific house, exposure, and elevation would actually face. Reach out for a free, no-pressure estimate and we'll give you a straight answer.