Ferndale Vinyl Siding Isn't a Bad Product — It's a Bad Fit for This Climate
We get asked a lot why a Ferndale siding company doesn't offer vinyl. It's a fair question. Vinyl siding is the most-installed exterior cladding in the country, it's inexpensive, and for a lot of climates it does an adequate job for a couple of decades. We're not going to tell you vinyl is junk, because that's not honest and it's not really the issue. The issue is that vinyl was engineered around national averages — moderate rain, moderate sun, moderate humidity — and Whatcom County doesn't have national-average weather. It has Puget Sound salt air, some of the wettest driving rain in the Lower 48, and a moss and algae season that runs most of the year in shaded, damp spots. Vinyl's weaknesses line up almost perfectly with our weaknesses. That's why we standardized on James Hardie fiber cement instead, and this page walks through the actual reasoning rather than just asserting it.
What Vinyl Siding Does Well
Before getting into why we don't install it, it deserves a fair shake. Vinyl siding is:
- The lowest material and labor cost of any common siding option
- Fast to install, which keeps labor bills down
- Resistant to rot, since it doesn't absorb water into its structure
- Low-maintenance in mild, dry-summer climates — a rinse now and then is often enough
- Available in a wide range of colors and profiles from national manufacturers
In a dry inland climate with hot summers and cold winters, vinyl can be a perfectly reasonable choice for a couple decades of service. That's just not the climate we're standing in.
Where Vinyl Struggles in a Puget Sound Climate
Driving Rain and Wind-Driven Moisture
Ferndale sits close enough to the water that storms rolling off the Strait of Georgia and Bellingham Bay bring rain sideways, not just down. Vinyl siding is a lapped, non-adhered panel system — it's designed to shed water down its face, not to seal against wind-driven moisture getting behind it. Every seam, every J-channel, every inside corner is a potential entry point when rain is hitting the wall at an angle instead of falling straight down. Once water gets behind vinyl, it's sitting against your sheathing and framing with a plastic panel on top of it, which can trap moisture rather than letting the wall dry.
Salt Air and UV Combined
Ferndale and the surrounding Whatcom County coastline get a steady dose of salt-laden air off the Sound. Salt air accelerates the breakdown of vinyl's surface finish faster than it would inland, and combined with UV exposure, it's a common cause of the chalking, fading, and brittleness that shows up on vinyl siding in coastal Pacific Northwest towns well before the manufacturer's warranty period ends. Vinyl also expands and contracts significantly with temperature swings — installers have to leave room for that movement, and salt air speeds up the wear at every one of those movement joints.
Moss, Algae, and a Long Damp Season
Between fall and late spring, a lot of Whatcom County stays damp for days at a stretch, and shaded north-facing walls barely dry out at all in that stretch. Vinyl's textured, slightly porous surface finish gives moss spores and algae something to grip onto, and because vinyl doesn't hold paint well over time, pressure-washing is often the only real cleaning option — which is exactly the kind of aggressive maintenance that can crack aging, brittle panels or drive water behind the seams you're trying to clean.
Impact and Wind Resistance
Vinyl is thin and flexible by design, which is part of what keeps it affordable, but it also means it's more prone to cracking from impact — a stray branch, a ladder, hail, even a firmly thrown ball — than a denser material. In wind events, unless it's installed with tight, correct nailing patterns (which not every crew takes the time to do), vinyl panels can rattle loose or blow off entirely.
Vinyl vs. James Hardie Fiber Cement: The Real Comparison
| Factor | Vinyl Siding | James Hardie Fiber Cement |
|---|---|---|
| Material composition | PVC plastic panel | Cement, sand, and cellulose fiber |
| Fire behavior | Combustible, can soften/melt near heat | Non-combustible |
| Wind-driven rain resistance | Relies on lap/panel seal, prone to intrusion | Rigid panel with engineered installation details |
| UV and salt-air fading | Color is through the panel but face chalks/fades over time | ColorPlus factory finish is baked-on and warrantied against fading/chipping |
| Impact resistance | Can crack or shatter, especially when cold | Dense, resists dents and impact damage |
| Paintability | Poor — most vinyl isn't meant to be repainted | Can be repainted decades later if desired |
| Typical upfront cost | Lowest of common siding options | Mid-range, higher than vinyl |
| Warranty structure | Varies widely by manufacturer/grade | Strong transferable limited warranty on the substrate and finish |
Why We Standardized on James Hardie
We made a decision a while back to install one product system and install it right, rather than offer every option and let quality vary by what a customer happened to pick. James Hardie fiber cement is non-combustible, which matters more every year given wildfire smoke and ember exposure across Western Washington summers. It's engineered in HZ5 and HZ10 product lines specifically for wetter, harsher climates like ours, meaning the formulation itself accounts for moisture cycling rather than just relying on the caulking and flashing to keep water out. The ColorPlus factory finish is baked on in a controlled environment, which holds up to UV and salt air dramatically better than a field-painted or extruded-color panel, and it carries a real, transferable limited warranty — something that matters if you ever sell the house within the coverage period.
None of that means fiber cement is maintenance-free. It still needs to be installed with correct clearances, flashing, and caulking, and the factory finish should be inspected periodically. But the failure modes we see with fiber cement, installed to spec, are slower and less severe than what we see with vinyl in this specific climate.
Installation Matters as Much as the Material
Part of why we only install one product is that we can get very good at installing it correctly, every time. A siding job that fails early is almost never purely a "bad material" problem — it's usually a combination of a marginal material and marginal installation. Vinyl in particular is unforgiving of shortcuts: over-driven nails, missing weep holes, wrong J-channel gaps, and skipped house wrap details all show up faster in a high-rain, salt-air climate than they would somewhere dry. We'd rather not offer a product where the margin for error is that thin.
Here's what we check on every fiber cement job, whether we're re-siding a whole house or replacing a section:
- Housewrap or weather-resistive barrier is continuous and properly lapped before any siding goes on
- Flashing at windows, doors, and roof-to-wall intersections directs water out, not in
- Fastener spacing and depth follow Hardie's published installation instructions, not a generic nailing pattern
- Panel gaps and caulking at joints allow for expansion without leaving water paths
- Bottom clearance from grade, decks, and roofing is kept to manufacturer minimums
- Factory-cut edges are primed or sealed per spec before installation
What This Means for Your Ferndale Home
If you're comparing quotes and one contractor is offering vinyl at a noticeably lower price, that's not a scam — it genuinely costs less to buy and install. The question worth asking yourself is how long you plan to own the home and how much wind-driven rain and salt exposure your specific lot gets. A home tucked away from the water with good roof overhangs will treat vinyl more gently than a home exposed to weather coming off Bellingham Bay or the Strait. We'd rather tell you that plainly than pretend there's only one right answer for every property in the county.
What we won't do is install a product on your home that we don't think holds up well to Ferndale's specific combination of salt air, driving rain, and a long moss season, just to win a bid. If fiber cement doesn't fit your budget, we'll tell you that honestly rather than switching materials to make the numbers work.
Get an Honest Look at Your Siding Options
If you're planning a re-side or new build in Ferndale or anywhere in Whatcom County, we're happy to walk your property, talk through what your specific exposure looks like, and give you a straightforward estimate for James Hardie fiber cement — no pressure, and no pitch for a product we wouldn't put on our own homes. Use the form below to request a free estimate.