Anacortes Two Products, One Decision We Made Years Ago
Homeowners in Anacortes ask us this question more than almost any other: what's the real difference between fiber cement and engineered wood siding, and why does your crew only show up with James Hardie on the truck? It's a fair question, and it deserves a straight answer instead of a sales pitch. Both products were built to solve the same problem — give homeowners the look of wood without the maintenance headaches of real cedar. They just solve it in very different ways, and out here on the Skagit County coastline, that difference matters more than it would in a dry inland climate.
This page walks through how each product is made, how each one holds up against salt air and driving rain, what ongoing maintenance actually looks like, and why our company standardized on fiber cement rather than carrying both. We're not going to tell you engineered wood is junk — it isn't. We're going to tell you where it struggles and why we decided we didn't want our name on a product with that particular weakness in this particular climate.
What Each Product Actually Is
Fiber Cement
Fiber cement siding is a blend of Portland cement, sand, and cellulose fiber, cured and pressed into planks or panels. There is no wood content in the finished board — the cellulose fibers are there for reinforcement during manufacturing, not as a structural wood component. That's the key fact that drives everything else about how it performs: it doesn't absorb water the way a wood-based product does, it doesn't feed fungal growth, and it doesn't expand and contract with moisture the way lumber does.
Engineered Wood
Engineered wood siding (the category includes products like LP SmartSide and similar strand-based panels) is made from wood strands or wafers bonded with resin under heat and pressure, then coated with a wax or zinc-borate treatment intended to resist moisture and insects. It's still fundamentally a wood product — engineered for consistency and treated for resistance, but wood at its core. That means it's lighter and easier to cut than fiber cement, and it holds paint well when new. It also means every cut edge, nail penetration, and seam is an opening into a material that will absorb water if that opening isn't sealed and maintained.
Why the Difference Matters in Anacortes Specifically
Skagit County's climate is not gentle on exterior building materials. Anacortes sits right on the water, which means salt-laden air moving across every wall, wind-driven rain that gets pushed sideways into seams and laps, and a long, damp moss season that runs from fall through spring where surfaces rarely get a chance to fully dry out. Add in the freeze-thaw cycles we get most winters, and you have a climate that actively tests the weak points of any siding material year after year.
Wood-based products, even well-engineered ones, are chemically vulnerable to sustained moisture exposure. Zinc-borate and wax treatments slow water absorption, but they don't eliminate it, and every treatment layer degrades over time and with every field cut a crew makes on-site. Fiber cement doesn't have that vulnerability at the material level — it's already an inorganic, cement-based product before it ever gets painted or capped. That's not a marketing distinction. It's a chemistry distinction, and it's the one that drove our decision.
Head-to-Head Comparison
| Factor | Fiber Cement (James Hardie) | Engineered Wood |
|---|---|---|
| Core material | Cement, sand, cellulose fiber | Wood strands/wafers with resin binder |
| Combustibility | Non-combustible | Combustible (wood-based) |
| Moisture response | Does not absorb and swell like wood | Absorbs water at cut edges/exposed cores if not sealed and maintained |
| Factory finish | ColorPlus baked-on finish, 15-year finish warranty on most lines | Often field-painted or factory-primed; repainting cycle typical every 5-10 years |
| Insect/rot resistance | Not a food source for insects or fungus | Treated to resist, but treatment can wear or be compromised by field cuts |
| Weight/installation | Heavier, requires proper fastening and cut-edge sealing per manufacturer spec | Lighter, easier to handle and cut |
| Coastal/moisture climate suitability | Purpose-built HZ10 line for Pacific Northwest exposure | General-purpose; not climate-zoned the way Hardie's lineup is |
| Typical product warranty | 30-year limited, transferable | Varies by manufacturer, commonly 5-year to limited lifetime with prorated terms |
Where Engineered Wood Genuinely Gets It Right
We'd be doing you a disservice if we pretended engineered wood has no upside. It's lighter, which can mean faster installation and less strain on a crew working a full elevation. It cuts more easily with standard tools, and it takes paint well right out of the box, giving it a warm, wood-grain look that some homeowners prefer over fiber cement's slightly more uniform texture. It's also generally less expensive per square foot than premium fiber cement lines, which matters on a tight budget. If it's installed by a crew that seals every cut edge without exception, caulks every joint correctly, and the homeowner keeps up with repainting on schedule, it can perform reasonably well for a good stretch of years — especially in drier climates.
The problem is that "installed perfectly and maintained on schedule forever" is a high bar, and Anacortes' climate doesn't forgive the gaps. One missed cut edge at a window trim, one caulk joint that fails after year six, one section that stays damp through a wet Skagit County winter — that's where the wood core underneath starts to break down, and by the time it shows on the surface, the damage is often already done underneath.
Maintenance Reality: What You're Actually Signing Up For
Every siding product needs some maintenance. The honest comparison is about how much, how often, and how forgiving the product is if you fall behind.
- Fiber cement (Hardie): Rinse periodically, inspect caulking at trim and penetrations every year or two, repaint only when you want a color change (ColorPlus finish is factory-cured and doesn't need repainting on a fixed cycle).
- Engineered wood: Repaint on a real schedule (paint is the primary moisture barrier once the factory treatment ages), inspect and reseal every cut edge and joint annually, watch closely for soft spots or swelling at butt joints and corners, and address any moisture intrusion immediately rather than at the next paint cycle.
Neither list is unreasonable on paper. But the consequence of falling behind is very different. A missed year of upkeep on fiber cement mostly costs you curb appeal. A missed year or two on engineered wood siding in a wet coastal climate can mean the substrate itself starts to fail, and at that point you're not touching up paint — you're replacing boards.
Fire and Structural Considerations
It's worth naming plainly: fiber cement is non-combustible, and engineered wood is a wood product, which means it's combustible like any other wood-based building material. For most homes this isn't the deciding factor, but for homeowners in wooded areas of Skagit County who think about wildfire exposure, or anyone comparing insurance considerations, it's a real difference worth knowing rather than discovering later.
Why We Standardized on James Hardie
We made a decision as a company to install one fiber cement system rather than carry multiple product lines, and James Hardie is that system. A few reasons drove that:
- Climate-engineered product lines. Hardie's HZ10 line is specifically formulated for the moisture and temperature patterns of the Pacific Northwest, which lines up with what Anacortes and the rest of Skagit County actually experience.
- ColorPlus factory finish. A baked-on finish applied and cured under controlled conditions holds color and resists fading and chipping better than a field-applied paint job, and it comes with its own dedicated finish warranty.
- Non-combustible core. One less thing to worry about, structurally and for peace of mind.
- Strong, transferable warranty. A 30-year limited warranty that can transfer to a future homeowner adds real value if you ever sell.
- Installation consistency. Standardizing on one system means our crews are deeply experienced with Hardie's specific fastening, clearance, and flashing requirements rather than switching methods between product lines.
That last point matters as much as the material itself. Fiber cement performs the way it's supposed to only when it's installed to spec — correct nailing patterns, proper clearances above grade and roof lines, sealed and primed cut edges, and correctly lapped house wrap and flashing underneath. A crew that installs one system exclusively, day in and day out, makes fewer of the small mistakes that undermine even the best product.
What Correct Installation Looks Like
Whether you're evaluating our bid or someone else's, here's what should be happening on a proper fiber cement installation in this climate:
- Weather-resistant barrier installed and lapped correctly before any siding goes up
- Rain screen or proper drainage gap where required by the site conditions
- All field-cut edges primed or sealed before installation, not after
- Minimum clearance maintained above roofing, decks, and grade per manufacturer specs
- Corrosion-resistant fasteners set to the correct depth — not overdriven, not underdriven
- Flashing integrated at every window, door, and penetration, not just caulked over
- Joints and butt seams treated per Hardie's published installation guidelines
Skip any one of these steps and even the best siding material in the world will underperform. This is as true for fiber cement as it is for any other product — the material is only half the equation.
Making the Right Call for Your Home
If you're weighing siding options for a home in Anacortes or elsewhere in Skagit County, the honest framework is this: engineered wood can be a reasonable choice in a drier climate with a homeowner committed to a strict maintenance schedule. In a climate defined by salt air, sideways rain, and months of sustained dampness, we think the margin for error is too thin, and the long-term cost of falling behind on maintenance is too high. That's why we install fiber cement exclusively — not because engineered wood is a bad product everywhere, but because it's not the product we're willing to put our name behind here.
If you'd like to talk through what this means for your specific home — orientation, exposure, existing siding condition, budget — we're happy to walk the property with you and give you a straight assessment. Reach out for a free, no-pressure estimate using the form below.