Ferndale Two Products, Same Category, Different Standard
If you've priced out fiber cement siding in Whatcom County, you've probably come across Cemplank. It's a real fiber cement product, sold through building supply distributors, and it shows up in a lot of bids because it's typically less expensive than James Hardie. We get asked fairly often why we don't offer it as an option. The honest answer isn't that Cemplank is a bad product — it's that after years of installing and standing behind fiber cement siding in this climate, we settled on one manufacturer we trust completely, and we didn't find a reason to split our crews, our warranty process, and our color-matching inventory across two brands.
This page walks through the real differences — not marketing claims, but the practical stuff that matters when your siding has to survive a Ferndale winter, spring, and everything the Puget Sound throws at it in between.
What Cemplank Gets Right
Fair is fair. Cemplank is fiber cement, which means it starts from the same basic recipe as James Hardie siding: cellulose fiber, sand, and portland cement pressed into a dense, stable board. That puts it in a completely different category from vinyl or engineered wood siding. Fiber cement in general:
- Doesn't burn — it's a non-combustible material, which matters more every year as wildfire smoke and dry summer stretches become part of Pacific Northwest life
- Resists rot in a way that wood-based products never fully can
- Holds paint and factory finish far longer than wood siding
- Doesn't attract carpenter ants or woodpeckers the way cedar can
- Is dimensionally stable, so it doesn't swell and shrink with every wet-dry cycle the way solid wood does
If your contractor is offering you Cemplank instead of vinyl or LP SmartSide, that's a step in the right direction. It's a legitimate fiber cement product. Our decision to install only James Hardie isn't about disqualifying Cemplank from the category — it's about what happens once you get past the base material and start looking at how each manufacturer engineers, finishes, and stands behind the board.
Where Whatcom County Weather Actually Tests Siding
Ferndale sits close enough to the Strait of Georgia and Bellingham Bay that salt-laden air is a real factor on siding, trim, and fasteners — not just near the water, but for miles inland once onshore flow kicks up. Add Whatcom County's long wet season, the driving rain that comes sideways off winter storms, and a moss season that can stretch from October well into spring on north-facing walls and shaded elevations, and you've got a climate that's genuinely hard on exterior building materials.
Fiber cement handles moisture better than wood, but not all fiber cement handles it the same way. The things that separate a good fiber cement installation from a mediocre one in our climate are:
- How well the factory finish resists moss, mildew, and salt staining without repainting
- Whether the board is engineered for high-moisture, high-humidity climates specifically, or built to a generic national spec
- How the plank handles repeated wet-dry cycling at butt joints and cut edges over 15-20 years
- Whether touch-up paint and replacement planks will still be available and color-matched a decade from now
This is where we started seeing daylight between the brands.
The Factory Finish Question
James Hardie's ColorPlus Technology is a baked-on, multi-coat factory finish applied and cured under controlled conditions, backed by its own dedicated finish warranty separate from the substrate warranty. It's engineered to resist fading and chipping in exactly the kind of damp, low-sun-exposure conditions Ferndale gets for a good chunk of the year.
Not every fiber cement brand on the market backs its finish the same way, and finish quality is the single biggest factor in how a fiber cement job actually looks in year eight or year twelve — not year one, when every product looks good. We didn't want to install a product where we couldn't stand behind the finish with the same confidence we stand behind the board itself. That's a standard, not a knock on any specific competitor — it's simply the bar we require before a product goes on a customer's home.
Field-Applied Paint vs. Factory Finish
Any fiber cement board can be field-primed and painted after installation, and some jobs are sold that way to shave cost. The problem is that field-applied paint almost never matches the durability, coverage, and warranty coverage of a factory-cured finish applied in a controlled plant environment. In a climate with our moisture load, a field finish is the first thing to show wear — chalking, uneven fade, and touch-up mismatches within the first few repaint cycles.
Climate-Engineered Product Lines
James Hardie makes different formulations of fiber cement for different climate zones — including an HZ5 line specifically engineered for regions with heavy moisture, freeze-thaw cycling, and high humidity, which describes Whatcom County reasonably well. That's not a marketing label; it changes how the board is formulated and how it performs against moisture intrusion at the joints and fastener points over time.
Whether a competing brand engineers separate formulations for wet Pacific Northwest climates versus, say, arid Southwest climates varies by manufacturer, and it's not always something a homeowner can verify from a spec sheet at the counter. When we're the ones responsible for what goes on your walls for the next few decades, we want to know exactly what climate zone the product was engineered for — not assume it'll be fine.
Installation Sensitivity Is a Real Cost
Fiber cement siding is only as good as its installation. Gapping, fastener placement, flashing details, and caulking practices matter enormously — get them wrong and moisture finds its way behind the board regardless of brand. This is true of any fiber cement product, including James Hardie.
The difference is training and documentation. James Hardie publishes detailed, climate-specific installation instructions and runs contractor training and certification programs, and installers who don't follow those specs can void the warranty outright. That gives us a clear, well-documented standard to install to and to point back to if a warranty question ever comes up. When a manufacturer's installation guidance is thinner or less specific, the quality of the finished job depends more heavily on the individual crew's judgment call — which is a harder thing to guarantee to a customer in writing.
Warranty Structure: What's Actually Backing the Board
| Factor | What to Ask Any Fiber Cement Brand | Why It Matters in Whatcom County |
|---|---|---|
| Substrate warranty length | Is it 30 years, prorated or non-prorated? | Long wet seasons put more cumulative stress on the board over decades |
| Finish warranty | Is the factory finish covered separately, and for how long? | Moss, salt air, and low sun exposure are hardest on the finish, not the substrate |
| Transferability | Does the warranty transfer to a new owner if you sell? | Protects resale value on a 20-30 year siding investment |
| Labor coverage | Does it cover just the material, or installation labor too? | Removing and replacing siding is the expensive part of a warranty claim |
| Regional availability | Will matching material still be produced in 15 years for repairs? | Smaller-distribution brands can be discontinued or reformulated, leaving mismatched patch repairs |
James Hardie backs its siding with a 30-year, non-prorated limited warranty on the substrate and a separate ColorPlus finish warranty, and the warranty is transferable to a subsequent homeowner — which matters if you ever sell the house. Not every fiber cement brand structures its warranty the same way, and the differences aren't always obvious until you actually read the fine print rather than the sales sheet.
What This Actually Costs You Over Time
Cemplank's lower upfront price is real, and we're not going to pretend otherwise. But siding is a 20-to-30-year decision, and the cost that matters is the total cost over that span, not just the invoice on installation day. A few things worth running the numbers on:
- Repaint cycles. A weaker factory finish means an earlier first repaint, and repainting fiber cement siding isn't cheap — it involves scaffolding or lifts, prep, and full-coverage paint, easily rivaling a meaningful chunk of the original siding cost.
- Repair matching. If a board gets damaged (a ladder impact, storm debris, a contractor's mistake) years down the road, can you get an exact color and profile match, or are you repainting an entire elevation to hide a patch?
- Resale perception. Buyers and their inspectors increasingly recognize name-brand fiber cement. A well-known, well-warrantied product is an easier sell than a brand a buyer's inspector has to look up.
- Claim friction. If something does go wrong, how many steps does it take to actually get warranty service, and who's paying labor?
Why We Standardized on One Product
We're not a lumberyard trying to offer every option at every price point — we're a crew that installs siding and then has to answer for it years later when a customer calls with a question or a concern. Running one product line means our installers train to one spec, our warranty process is the same on every job, and our repair and touch-up inventory always matches what's already on the wall. That consistency is worth more to us — and to our customers — than being able to quote a cheaper number on day one.
After weighing finish durability, climate-specific engineering, warranty structure, and installation documentation, James Hardie is the product that met our standard on every front. That's why it's the only fiber cement siding we install, on every job, in every Whatcom County neighborhood we work in.
Questions Worth Asking Before You Sign a Siding Contract
- What fiber cement brand are you quoting, and is the finish factory-applied or field-painted?
- What's the substrate warranty length, and is it prorated?
- Is the color finish under a separate warranty from the board itself?
- Is the warranty transferable if you sell the home?
- Is the product engineered for a wet, coastal climate zone, or a general national spec?
- Will matching replacement planks realistically be available in 10-15 years?
- Is the installer certified or trained specifically on that manufacturer's install spec?
If you're weighing siding options for a home in Ferndale or anywhere else in Whatcom County, we're glad to walk through what we'd recommend for your specific house, elevations, and exposure — no pressure, no obligation. Use the form below to request a free estimate.