Blaine Siding Vinyl siding covers more homes in America than any other exterior cladding, and there's a reason for that: it's inexpensive, it's fast to install, and in a dry inland climate it can hold up reasonably well for a couple of decades. We're not here to pretend vinyl is a scam or that every vinyl-clad house in Blaine is falling apart. It isn't. But we made a decision years ago to stop installing it, and homeowners in Whatcom County deserve to know why before they sign a contract with anyone.
This page isn't a takedown of a manufacturer. It's an honest look at how vinyl behaves as a material, and why that behavior matters more here — three blocks from the Salish Sea, under a marine layer that barely lifts from October through April — than it might in Spokane or Boise.
What Vinyl Siding Actually Is
Vinyl siding is extruded PVC (polyvinyl chloride) formed into overlapping panels, usually with a hollow-backed profile that hangs on the wall rather than fastening flat against it. The color is mixed into the plastic itself, not sprayed on, which is genuinely one of its strengths — there's no factory finish to chip or peel. It's light, it's cheap per square foot, and a competent crew can close in a house with it in a few days.
Where it runs into trouble is everything that comes after installation day: how it handles heat, cold, wind, moisture, and forty years of Pacific Northwest weather cycling through wet and dry.
The Trade-Offs We Won't Sign Our Name To
It Moves With the Temperature
PVC has a high coefficient of thermal expansion — it grows and shrinks noticeably more than wood, fiber cement, or metal as temperatures swing. That's exactly why vinyl panels are engineered to hang loose in a "hanger rail" instead of being nailed tight. Nail it too snug and the panel can't expand on a warm July afternoon; it buckles, oil-cans, or cracks at the nail slot. Blaine doesn't get brutal heat, but we do get real day-to-night and summer-to-winter swings off the water, and that loose-hang installation method is unforgiving of small mistakes. Get it wrong and you won't see it for a year or two — then a whole wall starts to ripple.
Salt Air and Driving Rain Find the Gaps
Vinyl siding is not a water barrier — it's a rain screen that sheds most of the water while letting the rest drain out behind it, which only works if the water-resistive barrier and flashing details underneath are done right. In a location where wind-driven rain comes straight off Semiahmoo Bay and the Strait of Georgia, the number of seams, laps, and J-channel joints on a vinyl installation adds up to a lot of places for wind-driven water to get behind the panel. The material itself won't rot, but the wood sheathing and framing behind it will, and by the time staining or soft spots show up at a window return, the damage has usually been building for a while, unseen.
It Becomes Brittle With Age and Cold
New vinyl has decent flex. Vinyl that's been through fifteen or twenty Whatcom County winters gets stiffer and more brittle, especially in the cold snaps that roll down out of the Fraser Valley. Impact from a dropped ladder, a wind-thrown branch, or a stray baseball can crack a panel outright rather than dent it. And because color runs through the plastic and each production run's pigment batch varies slightly, matching a fifteen-year-old panel to a new replacement piece is often impossible — you end up re-siding more of the wall than the actual damage.
Moss and Mildew Love the Overlaps
Blaine's moss season runs long — realistically most of the year in shaded, north-facing exposures. Vinyl's overlapping lap profile and hollow-backed shape create shadowed, slow-drying pockets exactly where moss, algae, and mildew like to establish. It's not a structural problem, but it is a maintenance one: an annual soft-wash is close to mandatory to keep a vinyl-clad home from looking neglected, and pressure washing done carelessly can drive water behind the panels rather than just cleaning the face.
The Warranty Is Usually Prorated
Most vinyl siding warranties look generous on paper — "lifetime" is a common headline — until you read the proration schedule. Coverage value typically declines every year from the day of installation, and many policies are non-transferable or only partially transferable to a new homeowner. If a homeowner sells in year twelve, the buyer often inherits little to no warranty protection on a product that's already showing its age.
Where Vinyl Genuinely Makes Sense
To be fair to the product: vinyl siding is a reasonable choice for a homeowner prioritizing lowest upfront cost on a budget-driven remodel or a rental property, in a drier inland climate, with a shorter ownership horizon and realistic expectations about its lifespan. That's just not the situation we're usually walking into in Blaine, where salt exposure, sustained moisture, and long-term value protection tend to matter more to the homeowners we work with.
Vinyl vs. Fiber Cement: The Honest Comparison
| Factor | Vinyl Siding | James Hardie Fiber Cement |
|---|---|---|
| Material behavior in temperature swings | Expands/contracts noticeably; requires loose-hang installation | Minimal movement; face-nailed installation |
| Impact resistance when aged | Brittle over time, cracks rather than dents | Dense fiber cement resists impact and denting |
| Fire rating | Combustible plastic; can melt or deform near heat sources | Non-combustible |
| Color/finish | Color molded into plastic; fades over decades, can't be color-matched later | Factory-applied ColorPlus finish, baked on with a long finish warranty |
| Moss/algae resistance | Overlap profile creates shadowed pockets that hold moisture | Tighter reveal profiles; still needs periodic cleaning but sheds water differently |
| Typical warranty structure | Often prorated, limited transferability | Strong non-prorated coverage with defined transfer terms |
| Upfront material + install cost | Lowest | Mid-to-higher, reflects labor and material durability |
Why We Standardized on James Hardie Instead
We stopped installing vinyl, LP SmartSide, and a handful of other products for the same underlying reason: we wanted to put one system on every house we touch and stand behind it completely, rather than juggling install methods and warranty terms across half a dozen materials. James Hardie's fiber cement lines are engineered specifically for high-moisture, high-UV coastal and marine climates like ours — the HZ5 product line in particular is formulated for exactly the freeze-thaw and moisture cycling that Whatcom County sees off the Strait.
Fiber cement is non-combustible, holds paint and factory finish far longer than vinyl holds its molded-in color, and doesn't rely on a loose-hang installation method that punishes small crew errors years down the road. It's heavier and it costs more to install — we won't pretend otherwise — but it's a product we can install to spec, back with a real warranty, and expect to still look right in twenty-five years on a house three miles from saltwater.
What a Homeowner Should Actually Weigh
- How close is the home to the water, and how much wind-driven rain does that wall face actually take in a winter storm?
- How long do you plan to own the home — is a prorated, harder-to-transfer warranty acceptable?
- Is a north-facing or heavily shaded wall going to fight moss year-round regardless of material?
- Does the budget allow for a material that costs more upfront but needs less babying over 20+ years?
- Has the current siding (of any type) already let moisture behind it — is this a re-side or a repair-first situation?
- Are you comparing quotes that specify the exact product line, not just "vinyl siding" or "fiber cement siding" generically?
Questions Worth Asking Any Siding Contractor
Whatever material a homeowner ultimately chooses, and whoever installs it, a few questions separate a careful contractor from one who's just moving fast:
- What water-resistive barrier and flashing details are you using behind the siding, and can you explain why?
- How do you handle expansion gaps and fastening for this specific product?
- What does the manufacturer's warranty actually cover, and does it transfer to a new owner?
- Can you show manufacturer certification or training specific to the product you're installing?
- What's your plan for window, door, and roofline flashing intersections — the places most siding failures actually start?
If you're weighing siding options for a home in Blaine or anywhere else in Whatcom County, we're happy to walk your property, point out what your current siding is telling us, and give you a straight answer about what we'd install and why. Reach out for a free, no-pressure estimate.