Everett Two Very Different Materials, One Decision Everett Homeowners Face
When a homeowner in Everett starts pricing out new siding, two products usually end up on the short list: engineered wood siding (most commonly sold under the LP SmartSide brand) and fiber cement siding, which is what James Hardie manufactures. Both are marketed as upgrades over vinyl and both look good on a sample board in a showroom. They are not, however, the same kind of product, and they don't age the same way once they're installed on a house that sits a few miles from Puget Sound and gets soaked for half the year.
We made a decision years ago to install only James Hardie fiber cement siding. We don't install engineered wood, vinyl, or the other cement-board alternatives on the market. This page explains what engineered wood actually is, what it does well, where it runs into trouble in our climate, and why fiber cement is the only material we're willing to put our name behind here in Snohomish County.
What Engineered Wood Siding Actually Is
Engineered wood siding is built from wood strands or wood fiber, compressed and bonded with resins under heat and pressure, similar to how OSB (oriented strand board) is made for structural sheathing. Manufacturers treat the panels with zinc borate and coat them with resin-saturated overlays to resist moisture and insects, then finish them with a factory primer or, on some products, a pre-finished coating.
Why Manufacturers Like It
It's lighter than fiber cement, which makes it faster to handle and cut on site. It also holds a nail and a screw more like traditional wood, so crews accustomed to installing cedar can move to engineered wood without much of a learning curve. Cut edges can be worked with standard woodworking tools, and it takes paint well.
Where the Core Material Creates Risk
The core of engineered wood siding is still a wood-based product. The strand board core swells if water gets past the factory coating and reaches it — through a cut edge, a fastener hole, a butt joint, or a spot where caulking has failed. Once that swelling starts, it doesn't reverse. The board can crumble, delaminate at the edges, or develop soft spots, and by the time it's visible from the ground, moisture has usually been working on it for a while underneath the paint film.
Where Driving Rain and Moss Season Change the Equation
Everett's climate is not the climate engineered wood siding was originally developed and marketed in. We get sustained, wind-driven rain off the Sound for months at a stretch, salt-laden air along the waterfront and up through neighborhoods that catch the marine breeze, and a long, damp moss season where north-facing walls and anything under tree cover stay wet far longer than they would in a drier climate. All of that adds up to more days per year where siding is holding moisture against its surface, and more opportunity for any unsealed edge or failed joint to let water in.
Engineered wood's performance depends heavily on every cut edge, every joint, and every fastener penetration being properly sealed and maintained — for the life of the product. Miss a spot during install, or let caulking age out and go unnoticed for a season or two, and that's exactly the kind of slow, hidden moisture intrusion that this climate is good at finding.
What Fiber Cement Is Made Of and Why That Matters Here
Fiber cement siding is made from Portland cement, sand, and cellulose fiber, cured into a dense, stable board. There is no wood core to swell, rot, or delaminate. It doesn't support insect damage the way a wood-based product can, and it's non-combustible, which matters for wildfire-adjacent building codes as well as for basic peace of mind.
Because the material itself is dimensionally stable, fiber cement handles our wet-dry cycling — soaked for days, then a dry spell, repeated for months — without the swelling and shrinking that stresses joints and finishes on wood-based products. That stability is the entire reason it holds a factory finish so much longer than anything field-painted.
The James Hardie System We Install
We don't just install "fiber cement" generically — we install the James Hardie product lines specifically, and the distinction matters.
Climate-Engineered Product Lines
Hardie manufactures regionally formulated products under its HZ5 and HZ10 designations, engineered for different moisture and freeze-thaw conditions across the country. The HZ5 formulation is suited to the Pacific Northwest's wet, moderate climate, which is a meaningfully different product than the versions sold in dry or extreme-freeze regions.
ColorPlus Factory Finish
Most of what we install uses Hardie's ColorPlus finish — a coating baked on in a controlled factory environment rather than sprayed or brushed on site. Factory-applied finish bonds more evenly and consistently than field-applied paint, and Hardie backs it with its own finish warranty separate from the product warranty. That's a meaningfully different proposition than a board that needs to be field-primed and painted after installation, or repainted on a homeowner's maintenance cycle.
Warranty Structure
Hardie's fiber cement products carry a long, transferable limited warranty on the substrate, with a separate finish warranty on ColorPlus products. Transferability matters at resale — it's a documented piece of the house's history that a buyer's inspector or agent can verify, not just a verbal assurance.
Side-by-Side: The Factors That Actually Matter Over Time
| Factor | Engineered Wood Siding | James Hardie Fiber Cement |
|---|---|---|
| Core material | Wood strand/fiber board | Cement, sand, cellulose fiber |
| Response to trapped moisture | Swells, can delaminate or soften | Dimensionally stable, does not swell |
| Combustibility | Combustible (wood-based core) | Non-combustible |
| Factory finish option | Primed or pre-finished, varies by product | ColorPlus baked-on finish widely available |
| Edge/cut sensitivity | High — every cut edge needs sealing | Lower, but factory-primed cut edges still need field priming |
| Typical repaint interval | Field-painted versions on a standard repaint cycle | ColorPlus finish rated well beyond standard paint cycles |
| Warranty transferability | Varies by manufacturer | Long transferable limited warranty |
Installation Sensitivity — Why the Crew Matters as Much as the Product
Neither of these materials performs well with a sloppy install, but the failure modes are different. Engineered wood is unforgiving of exposed or unsealed cut edges — every field cut needs to be sealed the same day, every time, or you've created a moisture entry point that can sit hidden for years. Fiber cement is far more tolerant of the material itself getting wet, but it still depends on correct fastening, proper clearances off decks and grade, correctly lapped and caulked joints, and manufacturer-specified gaps at trim.
This is a big part of why we standardized on one product line instead of quoting whatever a homeowner asks for. Our crews install Hardie day in and day out, to Hardie's published installation instructions, which is also what keeps the manufacturer's warranty intact. A crew that installs three or four different siding systems in rotation is more likely to make a spec-sheet mistake on any given one of them.
Cost Factors Over the Life of the Siding
Engineered wood typically has a lower material cost up front than fiber cement, and it's lighter to handle, which can shave some labor time. Where the cost picture changes is over the life of the siding:
- Field-painted products go on a repaint cycle that a ColorPlus finish avoids or pushes out considerably.
- Caulking and edge-sealing on any wood-based product needs periodic inspection and touch-up — skipped maintenance is where hidden moisture problems start.
- Repairs to a swollen or delaminated section usually mean replacing full boards, not spot-patching.
- A documented, transferable warranty can be a point in your favor at resale; an undocumented maintenance history usually is not.
We'd rather quote a homeowner the real, honest installed cost of a system that's engineered for this climate and backed by a strong warranty than win a bid on a lower sticker price and leave them managing a maintenance schedule for the next twenty years.
Our Standard, and What We'd Tell You Before You Sign Anything
We're not going to tell you engineered wood is a bad product — it isn't, and plenty of it is installed correctly and holds up fine in drier climates. What we will tell you is that we've chosen not to install it here, because Snohomish County's rain load, humidity, and moss season are exactly the conditions where a wood-based core is most exposed, and because we'd rather stand behind one system we install to spec every time than manage the edge-sealing risk of a product that depends on perfect maintenance for decades.
Before you choose a siding material for an Everett home, we'd suggest asking any contractor these questions:
- What happens to this product's core if water gets past the finish?
- Is the finish factory-applied or field-applied, and what's the warranty on each?
- Is the warranty transferable to a future owner, and is that in writing?
- What maintenance does this product require, and on what schedule?
- Does the installer work with this product exclusively, or as one of several options?
If you're weighing your options and want a straight answer about what makes sense for your house, we're happy to come take a look and talk through it. Reach out for a free, no-pressure estimate — there's a form below.