Birch Bay Two Different Approaches to the Same Problem
If you're replacing siding in Birch Bay, you've probably run into two products that both market themselves as tougher, lower-maintenance alternatives to solid wood: James Hardie fiber cement and LP SmartSide engineered wood. They get compared constantly because they solve a similar problem — homeowners tired of repainting and patching cedar — with genuinely different materials. One is cement-based. The other is wood-based. That difference matters more here than in most parts of the country.
Birch Bay sits right on the water, which means siding here deals with salt-laden air, wind-driven rain off the Strait of Georgia, and a moss season that can run from October through May. Whatever you put on the exterior of a Whatcom County home needs to hold up to sustained moisture exposure, not just occasional rain.
What LP SmartSide Actually Is
LP SmartSide is an engineered wood product — strand board made from wood fibers, resins, and waxes, treated with a zinc borate additive for insect and fungal resistance. It's a real step up from plain untreated wood siding, and LP backs it with a solid warranty when installed correctly. It's lighter than fiber cement, easier for crews to cut without special tools, and holds paint well when the finish is maintained.
The catch is in the name: it's still wood. Wood, by nature, expands and contracts with moisture and can swell or delaminate at cut edges, fastener points, and butt joints if those areas aren't sealed and repainted on schedule. In a dry inland climate, that's a manageable maintenance item. In a coastal environment with near-daily moisture exposure and a long wet season, it's a maintenance commitment that doesn't let up. Field-cut edges have to be primed on-site, and any gap in the paint film becomes an entry point for water. That's a real installation-sensitivity issue, not a knock on the product itself — it just means SmartSide's performance depends heavily on flawless detailing and consistent upkeep, year after year, in exactly the conditions Birch Bay has the most of.
What James Hardie Fiber Cement Is
James Hardie siding is cement, sand, and cellulose fiber, cured into a rigid board. It doesn't swell, rot, or feed insects, and it's non-combustible. Hardie's HZ5 product line is engineered specifically for climates like ours — freeze-thaw cycles, sustained damp weather, and salt exposure. The ColorPlus factory-applied finish is baked on under controlled conditions, which gives it better fade and adhesion performance than field-applied paint, and it comes with its own finish warranty separate from the substrate warranty.
Fiber cement isn't lighter or easier to handle — it's heavier, requires carbide-tipped blades or shears to cut, and needs correct fastener placement and clearances to perform as designed. Installed wrong, any siding product will fail early; Hardie is not magic. But installed to spec, it removes the two failure points that matter most on the water: moisture-driven swelling and the repaint clock.
Side-by-Side, Honestly
| Factor | LP SmartSide | James Hardie |
|---|---|---|
| Base material | Engineered wood strand | Fiber cement |
| Moisture response | Resistant, but can swell if seals fail | Does not swell or rot |
| Combustibility | Combustible | Non-combustible |
| Finish | Field or factory paint, repaint cycle needed | Factory-baked ColorPlus finish |
| Weight/handling | Lighter, easier field cuts | Heavier, requires proper tools |
| Warranty structure | Manufacturer warranty, contingent on maintenance | Substrate + separate finish warranty |
Why We Standardized on One Product
We install James Hardie exclusively — not LP SmartSide, vinyl, or anything else. That's a deliberate call, not a default. We've seen how much of a siding job's long-term success depends on things outside anyone's control after installation: whether the homeowner keeps up with repainting, how much direct salt spray and rain a given elevation takes, how many wet winters pass before someone gets around to touching up a seam. Fiber cement removes that variable. Once it's installed and finished correctly, the maintenance burden on the homeowner is dramatically lower, and that matters more here than almost anywhere else in Western Washington given how long our wet season runs.
This isn't a claim that SmartSide is a bad product — plenty of homes around the country wear it fine. It's a statement about what we're willing to put our name behind on Whatcom County homes that sit this close to salt water and get this much sustained moisture. We'd rather install one product well and stand behind it than spread our crews across materials with meaningfully different long-term maintenance profiles.
What This Means for Your Home
If you're weighing siding options for a Birch Bay property, the honest question isn't just "which is cheaper up front" — it's "which one do I want to be maintaining in twelve years." Fiber cement costs more at install and less over the life of the siding, in both dollars and effort. Engineered wood can cost less up front but asks more of you over time, especially this close to the water.
If you'd like to talk through what this looks like for your specific home — sun exposure, wind side, existing damage — we're happy to come take a look and give you a straightforward, no-pressure estimate.