Birch Bay Siding If you're re-siding a home in Birch Bay, you'll eventually land on the same question most homeowners in this corner of Whatcom County ask: vinyl or fiber cement? Both products are widely available, both get installed successfully across Western Washington every year, and both have real advocates. This page lays out how each one actually performs once it's up against salt air, driving rain, and the long moss season that defines our stretch of coastline — and why our crews only install James Hardie.
How Vinyl Siding Holds Up Here
Vinyl is a PVC plastic panel, extruded thin and hung loosely on the wall so it can expand and contract with temperature. That engineering is reasonable in a lot of climates. In Birch Bay, a few of its built-in traits work against it:
- Salt air and UV exposure fade color over time. Vinyl color runs through the whole panel, but sun and salt-laden air still chalk and dull it, and unlike a factory-baked finish, there's no separate coating to refresh — once it fades, the only fix is replacement.
- Cold snaps make it brittle. We don't get deep freezes often, but when a cold snap does roll through, vinyl loses flexibility and can crack on impact — a dropped ladder, a wind-thrown branch, a hard hail event.
- It's a rain-screen, not a rain barrier. Vinyl panels are designed to let water get behind them and drain back out. That's fine on a wall that's detailed and flashed correctly. On a coastal property catching driving rain off the Strait, any weak point in the underlying wrap or flashing turns that "designed to leak" behavior into a real moisture path into the sheathing.
- Seams and moss. Horizontal laps and butt joints give moss and algae something to grab onto in our damp, shaded yards, and vinyl's slightly flexible seams can telegraph waviness over the years as panels expand, contract, and loosen at the nailing slots.
Where Vinyl Still Makes Sense
To be fair to the product: vinyl is inexpensive, it's fast to install, it never needs painting, and a well-installed vinyl job on a well-flashed wall can last for decades without major issues. It's a legitimate budget option, and plenty of homes in Whatcom County wear it just fine. Our decision not to install it isn't about vinyl being a "bad" product — it's about what we've chosen to stand behind as our own installation standard.
Why We Standardized on James Hardie
James Hardie fiber cement is a blend of cement, sand, and cellulose fiber, pressed and cured into a dense, non-combustible board. It doesn't expand and contract the way vinyl does, it doesn't go brittle in cold weather, and it's manufactured in HZ5 formulations specifically engineered for the wetter, harsher climate zones of the Pacific Northwest.
A few specifics that matter for a Birch Bay property:
- ColorPlus factory finish. The color is baked on in a controlled factory process, not field-applied, so it resists the fading and chalking that salt air and UV cause on painted or pigmented surfaces — and it's backed by its own finish warranty separate from the product warranty.
- Non-combustible core. Fiber cement doesn't contribute fuel to a fire, which matters for insurance conversations as much as safety.
- Dimensional stability. Because it doesn't move much with temperature, seams stay tighter and straighter over the life of the siding.
- Proven track record when installed to spec. Hardie's long field history in wet coastal climates gives us a clear, documented installation method — correct clearances, flashing, and fastening — that we follow on every job.
- Transferable warranty. A strong, transferable manufacturer warranty adds real value if you sell the home down the line.
Side-by-Side
| Factor | Vinyl Siding | James Hardie Fiber Cement |
|---|---|---|
| Material | PVC plastic panel | Cement, sand, cellulose fiber |
| Fire behavior | Combustible plastic | Non-combustible |
| Color stability | Fades with UV/salt exposure over time | ColorPlus factory finish resists fading |
| Cold-weather behavior | Can become brittle, crack on impact | Stable, impact-resistant |
| Water management | Rain-screen design; depends on flashing behind panel | Dense board with engineered clearances and flashing details |
| Upfront cost | Lower | Higher |
| Typical lifespan when installed correctly | 20-30+ years | 30-50+ years |
The Real Cost Conversation
Vinyl will almost always win on upfront price, and we won't pretend otherwise. The honest comparison is cost per year of service, not cost per square foot on installation day. Fiber cement costs more to install today and holds its color, shape, and warranty value longer, which is why we've built our business around it rather than offering both. We'd rather do one product exceptionally well — with crews who install nothing else and know its details cold — than split our attention across product lines with very different installation requirements.
Every home on the water in Birch Bay, or a few streets back with wind and moisture still working on it every winter, deserves siding matched to what that Whatcom County climate actually does to a wall over 30 years. If you're weighing vinyl against fiber cement for your own home, we're happy to walk your property, look at your current siding and trim conditions, and give you a straight, no-pressure estimate for what a James Hardie install would look like.