Ferndale An Honest Look at Vinyl Siding
Homeowners in Ferndale ask us about vinyl siding all the time, usually because a neighbor has it, a big-box store is running a sale on it, or a general contractor quoted it as part of a remodel. It's a fair question, and it deserves a fair answer. Vinyl isn't a bad product in the abstract — it's inexpensive, it comes in a wide range of colors, and for a lot of the country it holds up reasonably well with minimal upkeep. We just don't install it here, and we think you should know exactly why before you spend money on a siding job that's supposed to last for decades.
This isn't a knock on vinyl as a manufactured product or on the companies that make it. It's about what happens when that product meets Whatcom County's specific climate — the salt air rolling off Bellingham Bay and the Strait of Georgia, the driving rain that comes sideways off Pacific storms, and the long, damp moss season that runs from fall through spring. We install exclusively James Hardie fiber cement siding, and this page walks through the reasoning, not just the conclusion.
What Vinyl Siding Gets Right
Before we get into why we don't install it, it's worth being straight about what vinyl does well, because pretending otherwise wouldn't be honest.
- Lower upfront material and labor cost than most alternatives
- No painting required — color is mixed into the material
- Lightweight, which makes installation faster on straightforward walls
- Reasonably resistant to rot, since it's a plastic product with no wood content
- Wide color and profile selection at most suppliers
For a lot of climates and budgets, that combination makes sense. Our reservations aren't about vinyl failing outright — they're about how it performs specifically in a marine, high-moisture, moss-prone environment over a 20-plus-year ownership horizon, which is the timeline most homeowners are actually planning around.
Where Vinyl Struggles in a Whatcom County Climate
Salt Air and Coastal Exposure
Ferndale sits close enough to Bellingham Bay and the Strait of Georgia that salt-laden air is a real factor on siding, trim, and fasteners — not just on boats and vehicles. Vinyl itself doesn't corrode, but the exposed metal fasteners, trim flashing, and the aluminum or steel components often paired with it are a different story. Over years of salt exposure, hardware corrodes faster than it would twenty miles inland, and vinyl's flexibility means panels rely heavily on that hardware staying sound to keep everything locked in place and weathertight.
Driving Rain and Moisture Behind the Panels
Vinyl siding is installed as an overlapping rain-screen system, not a sealed barrier — it's designed to let water get behind it and drain back out through weep holes at the bottom of each course. That works fine in moderate rain. It's a different equation with the driving, wind-driven rain that comes off Pacific storm systems and hits this coastline broadside. When wind pushes rain sideways into and behind vinyl panels faster than it can drain, moisture sits against the house wrap and sheathing longer than it should, especially around window and door penetrations where the panels are cut and fitted by hand. Fiber cement isn't immune to bad flashing detail either, but it's a rigid, dimensionally stable material that holds a tighter, more consistent reveal against the wall.
Moss, Algae, and the Long Growing Season
Whatcom County's moss season isn't a few weeks — it's most of the year. Cool temperatures, low sun angles, and persistent dampness on north-facing and shaded walls create ideal conditions for moss and algae growth on almost any exterior surface. Vinyl's textured, slightly porous surface and its horizontal lap seams give moss spores plenty of places to take hold, particularly where panels overlap and trap a film of moisture. Once established, moss on vinyl is genuinely difficult to remove without pressure that can crack or dislodge the panels, and harsh cleaners can dull the factory color permanently. Smooth, factory-finished fiber cement resists that buildup better and tolerates a gentler wash.
Installation Sensitivity — Why the Install Matters as Much as the Product
Expansion and Contraction
Vinyl expands and contracts significantly with temperature swings — more than fiber cement, wood, or metal siding. It has to be installed with specific nailing clearance so panels can move freely behind the fastener heads. Nail it too tight and panels can buckle, warp, or pop off the wall in a cold snap. Nail it too loose and it rattles or sags. Whatcom County's temperature swings aren't extreme by national standards, but our wet-to-dry cycling through the year still exercises that movement constantly, and it means the quality of the installer matters enormously — arguably more than with any other siding material on the market.
Fastening, Buckling, and Wind Exposure
Because vinyl is a thin, flexible material held on by a series of interlocking clips and nail hems, it depends on every course being fastened correctly to resist wind uplift. Ferndale gets its share of exposed, open-lot wind, especially on properties near the water or without much windbreak. A vinyl installation that's slightly under-fastened may look fine for years and then fail in a single bad windstorm, with panels peeling off in sheets. That's an installation-quality risk baked into the product itself, not a defect — but it's one more reason we'd rather not put our name behind it here.
Heat, Impact, and Long-Term Durability
Vinyl siding softens in direct, sustained heat and can distort near barbecues, dark-colored window films that reflect concentrated sunlight, or dryer vents. That's a smaller concern in this climate than in hotter parts of the country, but it's relevant on south- and west-facing walls during the region's increasingly common summer heat stretches. Impact resistance is the bigger everyday issue — vinyl cracks or shatters under a direct hit, particularly in colder weather when it's less pliable, whether from a ladder, a thrown rock from a mower, or hail. Fiber cement takes impact differently; it can chip at an edge but doesn't shatter the way brittle vinyl does in cold conditions.
Vinyl vs. Fiber Cement: A Side-by-Side Look
| Factor | Vinyl Siding | James Hardie Fiber Cement |
|---|---|---|
| Moisture behavior | Relies on drainage gaps; can trap water behind panels in driving rain | Rigid, tight reveal; engineered HZ formulations for wet climates |
| Salt air exposure | Panel is stable, but fasteners and trim hardware corrode over time | Factory-finished, non-corroding surface; standard corrosion-resistant fasteners |
| Moss and algae resistance | Textured, seamed surface holds moisture and spores | Smoother factory finish, easier to clean without damage |
| Fire behavior | Combustible plastic material | Non-combustible |
| Impact resistance | Cracks or shatters, especially in cold weather | Resists cracking; can chip at edges under heavy impact |
| Color life | Can fade unevenly; cannot be neatly repainted without prep issues | ColorPlus factory finish backed by a separate finish warranty |
| Upfront cost | Lower | Higher |
The Warranty Fine Print
Vinyl warranties look impressive on paper — some are labeled "lifetime" — but they're usually prorated, meaning the payout shrinks every year you own the house, and they typically cover material defects only, not labor, not color mismatch on a partial repair, and not damage from wind events above a certain rated speed. Many are also non-transferable or only partially transferable to a new owner, which matters if you plan to sell. It's worth actually reading a sample warranty document before assuming "lifetime" means what it sounds like. James Hardie's warranty structure, by comparison, includes a real transferable term on the substrate and a separate finish warranty on ColorPlus color retention — details we're glad to walk through in plain language during an estimate.
Why We Standardized on James Hardie
We made a decision as a company to install one siding system — James Hardie fiber cement — rather than offer a menu of products with different failure modes and different installation tolerances. Hardie's HZ5 and HZ10 product lines are engineered specifically for climates like ours, with moisture and freeze-thaw performance that matches what Whatcom County actually throws at a house. It's non-combustible, it holds its factory-applied ColorPlus finish far longer than field-painted alternatives, and it doesn't depend on a narrow fastening tolerance to perform in wind and rain the way vinyl does. Standardizing on one product also means our crews install it constantly — the same flashing details, the same fastening patterns, the same trim approach, every time — instead of splitting attention across several materials with different rules.
What to Ask Before You Choose a Siding Material
Whatever material you're considering, these are worth asking any contractor before you sign a contract:
- Is the warranty prorated, and does it cover labor or only materials?
- Is the warranty transferable to a future homeowner, and under what conditions?
- How does this material handle wind-driven rain hitting the wall at an angle?
- What's the manufacturer's fastening tolerance, and how is it verified on site?
- How does the material perform in cold-weather impact — hail, debris, accidental strikes?
- What does routine maintenance actually look like five, ten, and twenty years in?
- Is the product rated non-combustible, and does that affect insurance pricing?
Talk to Us Before You Decide
We're not going to tell you vinyl siding is worthless — it isn't, and it's the right call for plenty of homes in plenty of climates. We just don't think it's the right call for Ferndale's salt air, driving rain, and moss season, and we'd rather turn down that installation than put our name on a job we don't think will hold up the way a homeowner expects. If you want to see how James Hardie fiber cement compares for your specific home, we're happy to walk the property, talk through colors and product lines, and put together a free, no-pressure estimate.