Blaine Exterior Vinyl Siding Isn't a Bad Product — It's the Wrong Fit for This Coastline
We get asked about vinyl siding more than almost anything else. It's the most common siding material in the country, it's inexpensive, and most homeowners have seen it hold up fine somewhere. So we want to be upfront: vinyl isn't junk. It's a reasonable, budget-friendly product that works well in a lot of climates. Our position isn't that vinyl is defective — it's that after years of working on homes in Blaine and across Whatcom County, we've made a professional decision to install only James Hardie fiber cement siding, and we think homeowners deserve to know exactly why before they choose otherwise.
This page lays out the honest trade-offs. Not scare tactics, not invented failure statistics — just the real-world behavior of vinyl siding in a marine, moss-prone, high-moisture environment, and why we standardized on something else.
What Vinyl Siding Actually Gets Right
Fair is fair. Vinyl earned its market share for real reasons:
- Lower upfront cost — vinyl is typically the least expensive siding option installed today.
- No paint schedule — the color runs through the material, so there's no surface coating to fail in the first several years.
- Lightweight and fast to install — crews can move quickly, which keeps labor costs down.
- Low-maintenance in dry, moderate climates — in a lot of the country, a rinse once or twice a year is genuinely all it needs.
If you live somewhere with mild humidity and infrequent driving rain, a lot of vinyl's weaknesses barely show up over a normal ownership period. That's just not the environment we work in out here.
Why Blaine's Climate Is a Tougher Test
Blaine sits right on the water at the top of Whatcom County, and that location matters more than most homeowners realize when it comes to siding. A few things stack up against each other here:
Salt Air
Being this close to Semiahmoo Bay and the Strait of Georgia means airborne salt is a constant, low-level presence. It doesn't damage vinyl the way it corrodes metal fasteners and trim, but it does accelerate grime buildup and can interact with panel seams and fastener heads over time, especially on homes facing open water.
Driving Rain
Whatcom County doesn't just get a lot of rain — it gets a lot of wind-driven rain off the water, which pushes moisture sideways into seams, laps, and penetrations instead of letting it run straight down. Vinyl siding is a "rain screen" product by design — it's meant to shed bulk water while allowing some moisture behind the panel — but that design only works as intended when every lap, J-channel, and utility penetration was installed correctly and hasn't loosened or warped since.
Long Moss Season
Damp, shaded, mossy conditions here last most of the year, not just a few weeks in spring. Moss and algae growth on vinyl siding is mostly cosmetic, but it's persistent, it shows up fastest on north-facing walls and under tree cover, and it's one of the main reasons vinyl-sided homes in this area often look tired well before the material itself has failed.
The Real Trade-Offs We Weigh Against Vinyl
Moisture Behavior Over Time
Vinyl doesn't rot, but it also doesn't manage trapped moisture the way a rigid fiber cement panel does. If water gets behind vinyl through a gap, a poorly lapped seam, or a settled J-channel, it can sit against the wall sheathing longer than homeowners expect, because the vinyl itself gives no visual sign anything is wrong. In a low-rainfall climate that's a minor risk. In a region that sees sustained wind-driven rain for months at a stretch, it's a bigger one.
Installation Sensitivity
Vinyl siding is famously easy to install badly and hard to tell apart from a good installation just by looking at it. It has to be fastened loosely enough to expand and contract with temperature swings — nail it too tight and panels buckle or warp; nail it too loose and wind can rack it loose or let water infiltrate. Because so much of vinyl's real-world performance depends on installer discipline rather than the product itself, it's difficult for a homeowner to verify quality until years later when problems surface.
Impact and Wind Resistance
Vinyl is a relatively thin plastic product. It can crack in a hard, direct impact — a ladder, a thrown rock, a branch in a windstorm — especially in colder temperatures when it gets more brittle. Whatcom County gets its share of winter windstorms, and cracked panels are a common repair call.
Appearance Over the Long Haul
Vinyl's color is baked through the material, which is genuinely a strength — it won't peel. But it can fade unevenly with UV exposure over many years, and it doesn't take a fresh coat of paint easily if a homeowner wants to update a home's look down the road. Combined with the moss and algae staining common here, vinyl-sided homes in this climate often need a pressure wash more frequently just to look presentable.
Warranty Structure
Most vinyl warranties are prorated — meaning the payout shrinks the longer you've owned the product, and they typically cover material defects only, not labor or installation-related failures. That's standard across the vinyl industry, not a knock on any one brand, but it's worth understanding before you assume "lifetime warranty" means what it sounds like.
Side-by-Side: Vinyl vs. James Hardie Fiber Cement
| Factor | Vinyl Siding | James Hardie Fiber Cement |
|---|---|---|
| Material composition | PVC plastic | Cement, sand, and cellulose fiber |
| Combustibility | Combustible; can melt or deform near heat | Non-combustible |
| Impact resistance | Can crack, especially in cold weather | Dense and impact-resistant |
| Moisture handling | Sheds water but doesn't manage trapped moisture well | Engineered for wet-climate performance (HZ5 line) |
| Finish | Color runs through material; can't easily repaint | Factory ColorPlus finish, can be repainted |
| Wind/fastening tolerance | Must float slightly to allow expansion | Rigid, fixed installation |
| Typical warranty | Prorated, material only | Strong transferable warranty on product and finish |
| Upfront cost | Lower | Higher |
Why We Standardized on James Hardie
We stopped installing vinyl, LP SmartSide, and other fiber-cement alternatives for the same underlying reason: we wanted one product we could stand behind on every home we touch in this climate, rather than juggling different materials with different failure modes and different maintenance expectations.
James Hardie fiber cement gives us a few things vinyl can't:
- Non-combustible construction — a real safety consideration, not a marketing point.
- Climate-engineered HZ product lines — Hardie makes region-specific formulations built for exactly the wet, humid conditions we deal with here, rather than a one-size-fits-all product.
- A factory-applied ColorPlus finish — baked-on, not painted-on-site, which holds color and resists the fading and chalking that plain vinyl eventually shows.
- Rigid, dense material — it doesn't buckle in heat, crack in cold, or dent from routine impact the way thinner products can.
- A stronger, more straightforward warranty — including transferability if you sell the home, which matters to buyers and appraisers alike.
None of that means Hardie is maintenance-free — it still needs proper caulking, flashing, and periodic inspection like any siding system. But it's a product built for exactly the salt air, driving rain, and moss that define this part of Washington, and installed correctly, it's engineered to outlast the trade-offs vinyl carries here.
Questions Worth Asking Any Siding Contractor
- Do you install more than one siding material, and if so, why did you choose each one?
- What warranty — material and labor — actually applies if something goes wrong in year 10?
- How do you detail J-channels, laps, and penetrations for wind-driven rain specifically?
- Can you show me the manufacturer's installation instructions you follow?
- What's your plan for moss and algae staining on north-facing or shaded walls?
What This Means for Your Home
If you're planning a re-side in Blaine or anywhere in Whatcom County, vinyl will almost always be the cheaper quote on paper. That's a legitimate factor, and we're not going to pretend budget doesn't matter. But we'd rather tell you upfront that we don't install it, and why, than sell you something we don't believe holds up best against this specific coastline's weather. If another contractor's vinyl installation is right for your budget and situation, that's a reasonable choice for you to make with full information — we just won't be the ones installing it.
If you'd like to talk through what James Hardie fiber cement would look like on your home, what it costs relative to the alternatives, and how it holds up to salt air and moss over the long run, we're happy to walk your property and put together a free, no-pressure estimate.