Ferndale Siding The Short Answer
Homeowners ask us to bid vinyl siding jobs several times a year, and we turn most of them down. Not because vinyl is a scam or because every vinyl job fails — plenty of vinyl-clad houses in Ferndale are still standing after 20 years. We turn the work down because we've seen what vinyl does, and doesn't do, in Whatcom County's specific mix of salt air, driving rain off the Strait, and long stretches of damp shade that grow moss on anything that holds moisture. We'd rather explain our reasoning than take your money for a product we don't stand behind long-term.
What Vinyl Siding Actually Gets Right
Fair is fair. Vinyl earned its market share for real reasons, and we're not going to pretend otherwise.
- Lowest upfront cost of any common siding material, often by a wide margin
- No painting — the color is through the material, not a surface coating that wears off
- Fast installation — panels snap together and cover a house quickly, which keeps labor costs down
- Doesn't rot in the way wood does, since it's a petroleum-based plastic with no organic content for fungus to feed on
- Low-maintenance in dry climates where it isn't fighting constant moisture and temperature swings
If you live somewhere hot and dry with mild winters, vinyl can be a perfectly reasonable choice. That's just not the climate we work in.
Where Vinyl Struggles in a Marine Climate
It Moves With the Temperature
Vinyl expands and contracts more than almost any other siding material as temperatures swing. Installers have to leave gaps at every nail and every panel end to let it move, or the panels buckle and warp. Whatcom County's swings between summer heat trapped against south-facing walls and cold, wet winter nights aren't extreme compared to, say, the Midwest — but combined with our humidity, that constant movement opens gaps at seams over time. Those gaps are where moisture gets behind the panel.
Moisture Gets Behind It — and Stays
Vinyl siding is installed loose, hanging on a track system rather than face-nailed tight, specifically so it can move. That means there's almost always a small air gap between the panel and the house wrap behind it. In a dry climate, that gap dries out fast. In Ferndale, with driving rain coming off the water and long gray stretches where nothing fully dries for days, wind-driven rain can work its way behind panels at seams, corners, and butt joints. Once it's in there, it stays damp longer than the surface ever shows.
Moss and Algae Love the Surface
Vinyl's smooth, slightly porous surface holds a thin film of moisture in shaded, north-facing walls — exactly the kind of spot common on tree-lined lots around Ferndale and the rest of Whatcom County. That film is enough for algae and moss to get a foothold, especially on darker colors that stay cooler and hold dew longer. It's cosmetic, not structural, but it means pressure washing on a schedule if you want the house to look clean, and pressure washing vinyl too aggressively can crack panels or blow water behind them — the exact problem you were trying to avoid.
Fasteners Loosen, Panels Rattle and Blow Off
Because vinyl hangs on nails driven loosely into a track (not screwed or nailed tight), high wind can catch a panel edge and work it loose over years of gusts. Coastal and near-water properties in this county see stronger, more consistent wind off the Strait and Bellingham Bay than inland lots. We've replaced enough wind-lifted vinyl panels on other contractors' work to know it's a real, recurring service call, not a rare fluke.
It Fades — and Then You're Stuck
Vinyl's color is mixed into the plastic, which sounds durable, but UV exposure still fades it over the years, and lighter or muted colors fade less evenly than you'd expect. The problem is you can't spot-repair a faded section — new vinyl from the same box, installed five years later, will visibly not match. If a panel cracks (which happens more in cold-brittle vinyl during a hard freeze) or gets damaged by a ladder or a stray branch, you're either hunting for a color-matched remnant or re-siding the whole wall.
The Installation-Quality Problem
Vinyl is often sold as easy to install, and mechanically it is — which is exactly why it attracts rushed, low-skill installation. Nailing it too tight (not leaving the expansion gap), skipping proper flashing at windows and corners, or failing to lap panels correctly are common mistakes that don't show up as problems until year three or four, when the homeowner has long since stopped thinking about the install. We don't think a material should depend this heavily on an installer resisting the temptation to do it the fast way. We'd rather work with a product where correct installation is the only way we know how to do it.
Side-By-Side: Vinyl vs. What We Install
| Factor | Vinyl Siding | James Hardie Fiber Cement |
|---|---|---|
| Upfront cost | Lowest of common options | Mid-to-higher, reflects material and labor |
| Moisture behind panel | Loose-hung, gaps at seams can let wind-driven rain in | Rigid, tight-fitted with proper flashing details |
| Moss/algae resistance | Smooth surface holds film moisture in shade | ColorPlus factory finish resists staining, easier to keep clean |
| Wind performance | Loosely fastened, can lift or rattle in sustained wind | Nailed solid to sheathing, rated for high wind zones |
| Fire behavior | Combustible plastic, can melt or ignite | Non-combustible cement-based material |
| Fading | UV fades over years, hard to color-match repairs later | Factory-baked ColorPlus finish holds color far longer than field-applied paint |
| Repair/patch matching | Difficult once original run is faded | Warranty-backed color consistency across repairs within its window |
| Warranty structure | Varies widely by manufacturer and grade | Strong transferable manufacturer warranty on both substrate and finish |
Why We Standardized on James Hardie Instead
We install James Hardie fiber cement siding exclusively — not LP SmartSide, not Cemplank, not Allura, not primed spruce or cedar, and not vinyl. That's a narrow lineup on purpose. Hardie's fiber cement is non-combustible, holds up to driving rain without relying on loose-hung panels and hidden air gaps, and comes in Whatcom County-appropriate HZ5 formulations engineered for moisture-heavy climates like ours. The ColorPlus factory finish is baked on rather than field-applied, which means far better long-term color hold and a real fighting chance against the moss and algae that this region's damp, shaded lots throw at every exterior surface. When it's installed to Hardie's spec — correct clearances, proper flashing, correct fastening — the manufacturer backs it with a strong transferable warranty, and we back our labor on top of that.
We didn't land on Hardie because it's the easiest thing to sell. It's more expensive to buy and more labor-intensive to install correctly than vinyl. We settled on it because it's the one product we've found where doing the installation right is straightforward and repeatable, and where the material itself doesn't need us to explain away its weaknesses in a climate like this one.
When Vinyl Might Still Make Sense
We're not going to tell you vinyl is never the right call anywhere. It can be a reasonable option on a detached outbuilding, a rental property where you're optimizing purely for upfront cost, or a short-hold flip where 20-year performance isn't the point. What we won't do is install it on a primary residence in this county and tell you it'll perform like fiber cement over the long run, because in our experience it won't.
Questions to Ask Before You Choose Any Siding Material
- How does this material behave when wind-driven rain hits it sideways, not just straight down?
- What happens to the color in 10 years, and can a damaged section be replaced without it standing out?
- Does the manufacturer's warranty cover the finish, the substrate, or both — and is it transferable if you sell?
- How forgiving is this material of an installer having a bad day?
- Is this material rated for the wind and moisture exposure your specific lot actually sees?
Get an Honest Look at Your House
If you're weighing siding options for a home in Ferndale or elsewhere in Whatcom County, we're happy to walk your property, point out what your specific exposure — sun, wind, shade, moss history — actually calls for, and give you a straight answer even if that answer changes what you had in mind. Request a free, no-pressure estimate using the form below.