Anacortes Homeowners in Anacortes ask us this a lot, usually after getting a bid from another contractor: "What's the difference between Cemplank and James Hardie? Isn't it all just fiber cement?" It's a fair question. At a glance, the two products look similar — both are cement-based composite siding, both come in lap and panel formats, both are a major step up from vinyl or wood in terms of fire resistance and durability. But we made the decision years ago to install James Hardie exclusively, and it's worth explaining why, honestly, rather than just saying "trust us."
What Cemplank Gets Right
Cemplank is a real fiber cement product, not a knockoff. It's manufactured by a major building products company and installed successfully across the country. It resists fire, doesn't rot, and holds up better than wood or vinyl in most climates. For a contractor who isn't specialized in one brand, it's a legitimate option, and we're not going to pretend otherwise.
Where the Trade-Offs Show Up
The differences that matter to us aren't dramatic on paper — they show up over the 20, 30, 40 years a siding job is supposed to last, especially in a place like Skagit County where the siding is fighting salt air, driving rain, and months of shaded moss growth every year.
- Factory finish depth. James Hardie's ColorPlus finish is baked on in a controlled factory process with a documented multi-coat system and a finish warranty that travels with the product. Cemplank's factory-finish options and warranty structure vary more by distributor and region, which makes it harder for us to promise a homeowner the same long-term color performance we can promise with Hardie.
- Regional engineering. Hardie builds its HZ5 product line specifically for the Pacific Northwest's moisture profile — freeze-thaw cycles, prolonged damp, and the kind of low-angle, wind-driven rain Anacortes gets off the water. We haven't seen the same level of climate-specific product differentiation from Cemplank's lineup.
- Installation forgiveness. Fiber cement in general is unforgiving of poor flashing, gapping, or fastener mistakes — that's true of any brand. But the volume of installer documentation, training programs, and field guidance available for Hardie products is significantly deeper, which matters when we're training crews to a consistent standard and when a homeowner's warranty depends on installation matching spec exactly.
- Warranty structure and transferability. Hardie's non-prorated warranty terms and transferability to a new owner are well-documented and consistent nationwide. That's a real selling point when a homeowner sells their house in year 12 and wants the remaining warranty to mean something to a buyer.
- Availability and lead times. Because Hardie has such deep market penetration in the Northwest, we can source specific profiles, colors, and trim pieces reliably. Sourcing consistency matters when a repair or addition needs to match siding installed years earlier.
Why This Isn't About "Bad Product, Good Product"
We want to be clear: this isn't a claim that Cemplank fails or performs poorly. It's a fiber cement product doing what fiber cement is supposed to do. Our decision is about standardizing our crews, our warranty promises, and our long-term accountability around one system we know inside and out — rather than splitting our installation knowledge, flashing details, and warranty conversations across multiple manufacturers. When something goes wrong on a house 15 years from now, we want to know exactly what's behind that wall.
Why Hardie Specifically, for Anacortes Homes
Anacortes sits right on the water, which means siding here deals with salt-laden air corroding fasteners and trim, driving rain finding every gap in flashing, and long stretches of shade on north- and west-facing walls where moss and algae get a foothold and never fully dry out. Fiber cement in general handles that better than wood or vinyl — it doesn't rot, it doesn't warp, and it's not a food source for organic growth the way cedar can be. But the factory finish quality is what determines whether a home still looks sharp in year 15 instead of needing an early repaint, and the installation detailing is what determines whether moisture actually gets kept out from behind the boards. That's the combination — engineered HZ product lines, a documented factory finish, and a warranty we can stand behind — that led us to standardize on James Hardie rather than split our attention across multiple fiber cement brands.
What This Means for Your Bid
When we quote a siding job, every board, trim piece, and fastener spec traces back to one manufacturer's installation manual. We're not guessing which brand's flashing details apply, and we're not managing two different warranty registration processes. For a homeowner, that means one clear answer when you ask "what happens if something fails" — not a product-by-product explanation.
| Factor | Cemplank | James Hardie |
|---|---|---|
| Fiber cement composition | Yes | Yes |
| Regionally engineered PNW line | Not to our knowledge | HZ5 for Pacific Northwest |
| Factory finish documentation | Varies by distributor | ColorPlus, standardized nationwide |
| Warranty transferability | Varies | Documented, transferable |
| Local trim/color sourcing | Limited in our experience | Deep regional availability |
The Bottom Line
Cemplank is a legitimate fiber cement product installed by plenty of capable contractors. We simply made a business decision to build our entire process — training, flashing details, warranty registration, color matching — around one manufacturer whose product line, factory finish, and warranty terms we trust for what Anacortes homes go through every winter.
If you're weighing siding options for a home here in Skagit County, we're happy to walk through what we'd recommend and why, with no pressure to sign anything. Reach out for a free estimate and we'll take an honest look at your home's exposure and give you a straight answer.