Burlington Two Fiber Cement Products, One Real Difference
If you've gotten a few siding quotes in Skagit County, you've probably noticed that not every "fiber cement" bid is quoting the same product. Cemplank and James Hardie are both fiber cement siding — a blend of cement, sand, and cellulose fiber pressed into planks and panels. On paper, they look like close cousins. In practice, the manufacturing details, finish process, and warranty structure diverge enough that we made a decision years ago to install only one of them. This page explains why, honestly, without pretending Cemplank is a bad product — it isn't. It's just not the one we put our name behind.
What Cemplank Is
Cemplank is a fiber cement siding line manufactured by Etex Group (the same parent company behind Nichiha and several other building products brands). It's a legitimate fiber cement product — non-combustible, resistant to rot, and far more durable than vinyl or untreated wood in a wet Pacific Northwest climate. Cemplank is often positioned as a value alternative in the fiber cement category, and it's sold through some of the same distribution channels as Hardie products, which is part of why homeowners get confused comparing the two.
Where Cemplank differs most is in finish and factory support. Historically, Cemplank has been available primed for field painting, and its factory-finished color and texture options have been narrower than Hardie's. That single difference — factory finish versus site-applied paint — is the root of most of the long-term performance and appearance issues we've seen on fiber cement jobs that didn't hold up the way the homeowner expected.
What James Hardie Is
James Hardie invented modern fiber cement siding and has spent decades refining it specifically for regional climates. Hardie's HZ5 product line is engineered for the wetter, cooler climate zones that include western Washington, with a formulation intended to resist moisture-related damage better than a generic, one-size-fits-all fiber cement mix. Every Hardie board that leaves the factory with ColorPlus Technology has already been through a baked-on, multi-coat finish process before it ever reaches a job site in Burlington.
That factory finish is not a minor feature. It's the difference between a color that's engineered to resist fading and chalking for the life of the finish warranty, and a color that depends on the weather conditions, the painter's skill, and the primer coverage on the day it was installed in the field.
Why Factory Finish Matters More Here Than Almost Anywhere
Skagit County doesn't get extreme heat or extreme cold. What it gets is months of low-intensity moisture exposure — driving rain off the Sound, salt-tinged air moving inland from the Strait of Juan de Fuca and Padilla Bay, and a long moss season where north-facing walls and shaded elevations stay damp for weeks at a time. That's a demanding environment for any exterior finish, because the failure mode isn't a single storm — it's cumulative exposure, year after year. A factory-cured finish with a documented warranty holds up to that kind of slow attrition more predictably than a field-primed board that's counting on a good paint job to do the same work.
Side-by-Side: Where the Products Actually Differ
| Factor | Cemplank | James Hardie |
|---|---|---|
| Core material | Fiber cement (Etex Group) | Fiber cement (climate-engineered HZ formulations) |
| Standard finish | Often primed for field painting | Factory-applied ColorPlus baked-on finish |
| Color/texture selection | Narrower factory-finished lineup | Wide range of factory colors, textures, and profiles |
| Finish warranty | Varies; field-painted finishes typically rely on the paint manufacturer's warranty | Separate, transferable ColorPlus finish warranty backed by Hardie |
| Regional formulation | General-purpose fiber cement | Zone-specific HZ5 formulation for the Pacific Northwest |
| Installer network locally | Less common; fewer local crews with deep product-specific training | Widely installed; established local supply chain and trained crews |
The Warranty Question Nobody Asks Until It's Too Late
Every fiber cement manufacturer offers some form of product warranty, but the details matter more than the marketing. With a field-painted board, you're often looking at two separate warranties: one from the siding manufacturer covering the substrate, and a shorter one from whoever made the paint, covering the finish. If the paint fails first — which is usually what happens — you're negotiating with a paint company about a siding problem, and the remedy is rarely "we'll replace your siding."
Hardie's ColorPlus system bundles the finish and the substrate under one manufacturer, with a warranty structure built around the fact that the color was baked on at the factory, not brushed on at your house. That's a meaningfully different conversation if something ever does go wrong ten or fifteen years down the road. It's also transferable to a new owner if you sell, which matters more than most homeowners think about at the time of installation.
Installation Sensitivity: Why the Crew Matters as Much as the Product
Fiber cement siding, regardless of brand, is unforgiving of bad installation. Improper fastening, wrong clearances at grade, missing flashing details, or caulking joints that should have been left to breathe will cause moisture problems no matter whose name is on the board. That said, product-specific training matters. Hardie has invested heavily in installer certification and published installation specs for different climate zones, and there's a large, established base of contractors in western Washington who install it regularly and know its quirks. Cemplank has a thinner bench of specialized local installers, which increases the odds of an installer treating it like "generic siding" rather than following manufacturer-specific detailing.
When we decided to standardize on one fiber cement product, this was part of the calculation: consistency in training, consistency in installation detail, and a crew that installs the same product week after week rather than switching specs between brands.
What This Means for a Skagit County Roof Line and Wall Assembly
Local wall assemblies need to manage bulk water at the field, and manage vapor drive over a long, mild wet season. Whatever siding goes over that assembly needs a predictable moisture response — the manufacturer's installation instructions, house wrap compatibility, and flashing details need to be followed exactly, not approximated. Standardizing on one product lets our crews install to one detailed spec, on every house, every time, instead of relearning nuances between two different manufacturers' systems.
Where Cemplank Is a Reasonable Choice
To be fair: Cemplank is a real fiber cement product, and for a homeowner on a tighter budget who understands they'll need to repaint on a future cycle and is comfortable with a narrower factory color selection, it's not a dangerous or foolish choice. It performs better than vinyl in this climate and is far more fire-resistant than wood siding. Our decision not to install it isn't a claim that it will fail — it's that after weighing finish durability, warranty structure, and installer familiarity, we decided our crews and our reputation would stand behind one system, and Hardie's factory-finished, climate-specific line was the one we chose.
What We Recommend Instead
For Burlington and the surrounding Skagit County area, we install James Hardie's HZ5 product line exclusively, with ColorPlus factory finishes wherever the homeowner's color choice allows it. That gives you a siding system engineered for this specific moisture and salt-air exposure, a finish warranty that doesn't depend on a repaint schedule, and a crew that installs this exact system often enough to catch the small details that keep water out for the long haul.
Questions Worth Asking Any Siding Contractor Before You Sign
- Is the siding factory-finished or will it need to be primed and painted after installation?
- What is the finish warranty, who backs it, and is it transferable if you sell the home?
- Is the product formulated for this climate zone, or is it a general-purpose version?
- How many jobs has this specific crew installed with this specific product in the past year?
- What clearance, flashing, and fastening details does the manufacturer require, and will the contractor put that in writing?
- Does the warranty cover labor for a defect repair, or only the material itself?
The Bottom Line
Cemplank and James Hardie both start from the same basic fiber cement chemistry, but the finish process, warranty structure, and installer ecosystem around each product are different enough to matter over a 20- or 30-year ownership horizon. Given what Skagit County's salt air, driving rain, and moss season do to an exterior over time, we decided a factory-finished, climate-engineered product with a bundled warranty was worth standing behind exclusively. That's why we only install James Hardie.
If you're weighing siding options for a home in Burlington or anywhere in Skagit County, we're happy to walk your property, look at your specific exposures, and put together a free, no-pressure estimate — no obligation, just a straight answer about what your house actually needs.