Lynden Siding Vinyl siding shows up on more homes in Whatcom County than almost any other exterior product, and there's a reason for that: it's inexpensive, it's fast to install, and for a lot of builders it does the job well enough to pass a final walkthrough. We're not going to pretend vinyl is a scam or that every vinyl-clad house in Lynden is falling apart. It isn't. But we made a decision years ago to install James Hardie fiber cement siding exclusively, and we think homeowners deserve a straight explanation of why — especially in a climate like ours, where salt air off the Nooksack corridor, driving Pacific rain, and a long, damp moss season put real demands on an exterior wall system.
What Vinyl Siding Actually Gets Right
Before we get into why we don't install it, it's worth being fair about what vinyl does well. It's genuinely low-maintenance in the sense that it never needs painting. It's one of the more affordable siding materials on the market, which matters for budget-driven projects. Installation is fast, which keeps labor costs down. And modern vinyl has come a long way from the thin, brittle panels of the 1980s and 90s — better-grade products resist fading somewhat longer and hold up reasonably well in moderate climates.
If you live somewhere with mild winters, minimal wind-driven rain, and no salt exposure, vinyl can be a perfectly reasonable, budget-conscious choice. Lynden isn't that place.
Why Our Climate Changes the Calculation
Driving Rain and Wall Moisture
Whatcom County gets a lot of rain, and a good share of it doesn't fall straight down — it comes sideways, driven by wind off the Strait of Georgia and the Fraser Valley. Vinyl siding is installed as an overlapping shell, not a sealed skin. It's designed to move with temperature swings, which means it's hung loosely on the wall rather than fastened tight. That loose-hang design lets wind-driven rain work behind the panels more easily than it does with a rigid, tightly fastened material. Vinyl manufacturers account for this by relying heavily on the water-resistive barrier and flashing behind the siding to do the real waterproofing work — the siding itself is more of a rain screen than a watertight layer. That's a legitimate engineering approach, but it puts almost all the burden on installation quality, and installation quality is exactly where budget siding jobs tend to cut corners.
Salt Air and Long-Term Material Fatigue
Lynden sits inland from Bellingham Bay and the Salish Sea, and homes throughout Whatcom County still see measurable marine air influence, especially on west- and south-facing exposures. Salt-laden moisture accelerates the breakdown of a lot of building materials, and vinyl is no exception — it's a petroleum-based plastic product, and UV exposure combined with salt air tends to make it more brittle over time than it would be in a drier inland climate. Brittle vinyl cracks more easily from hail, ladder contact, or even a thrown baseball, and once it cracks, water finds its way behind the panel.
Moss and the Damp Season
Anyone who's owned a home here knows the moss season is long — often eight or nine months of the year with enough moisture and shade to keep north-facing walls and low-sun corners damp. Vinyl doesn't rot, but it does trap moisture behind it in the gaps and channels of its overlapping profile, and it provides a lot of shaded, humid nooks for moss and mildew to take hold on the surface itself. That growth is mostly cosmetic on vinyl, but the routine power-washing homeowners do to keep it looking clean can, over years, work water into seams and fastener slots that weren't designed to be pressure-washed directly.
Installation Sensitivity Is the Real Issue
Vinyl siding is genuinely a good product when installed by someone who understands its quirks — proper nail spacing so panels can expand and contract, correct J-channel and flashing details at every window and corner, and enough slack in the fastening to let the material move with temperature. The problem is that vinyl is also the easiest siding product to install badly and have it look fine on installation day. Nailed too tight, it buckles the first hot week. Flashed poorly, it hides water intrusion behind the wall for years before anyone notices rot in the sheathing. Because the failure modes are slow and hidden, a rushed vinyl job and a well-done vinyl job can look identical for the first two or three years — and very different by year ten.
We install exclusively, day in and day out, and we'd rather stand behind one product system we can install to spec every single time than split our attention across a material where the margin for error is that unforgiving.
The Maintenance Trade-Off Nobody Mentions at Purchase
Vinyl is marketed as "maintenance-free," and in the sense that it never needs paint, that's true. But it isn't truly maintenance-free in a climate like ours. Expect to power-wash it regularly to keep moss and salt film from dulling the surface, inspect seams and corner posts after wind events, and eventually deal with color fade on the sun-exposed elevations — vinyl color runs through the material, but UV still breaks down the surface gloss and pigment over fifteen to twenty years, and unlike paint, you can't touch it up. When it fades or cracks, the fix is panel replacement, and matching an old panel's color to new stock gets harder every year as manufacturers update their color lines.
How Vinyl Compares to James Hardie Fiber Cement
| Factor | Vinyl Siding | James Hardie Fiber Cement |
|---|---|---|
| Material | PVC plastic panel | Cement, sand, and cellulose fiber |
| Fire behavior | Combustible; can melt or warp near heat sources | Non-combustible |
| Moisture handling | Rain-screen design; relies on WRB behind it | Engineered for high-moisture climates (HZ5 products); resists moisture-driven damage |
| Impact resistance | Can crack or shatter, especially when brittle from UV/salt exposure | Resists denting, cracking, and impact damage far better |
| Color | Molded-in color; fades over time, can't be touched up | ColorPlus factory-baked finish; resists fading, chipping, and cracking |
| Installation tolerance | Low — needs precise nailing, flashing, expansion gaps | More forgiving when installed to manufacturer spec, but still requires correct technique |
| Warranty | Varies widely by manufacturer and grade | Strong transferable manufacturer warranty backing the product |
| Upfront cost | Lower | Higher |
Why We Standardized on James Hardie
We made the switch to installing James Hardie exclusively because it's an engineered product line that actually matches this region's climate demands instead of just tolerating them. Hardie's HZ product lines are formulated specifically for climates with heavy moisture exposure, and the material itself is non-combustible — a genuine advantage during dry-season wildfire smoke and ember exposure, which has become a more regular concern in the Pacific Northwest. The ColorPlus factory finish holds color far longer than field-applied paint or molded plastic pigment, and it means the siding isn't relying on a homeowner's future repainting schedule to keep looking right.
Just as important, fiber cement doesn't have the same brittleness problem vinyl develops under UV and salt exposure. It holds up to impact, resists moisture-driven warping, and when installed correctly, it stays flat and tight against the wall for decades rather than loosening and buckling with temperature swings. Because we install it exclusively, our crews aren't switching between install methods from one job to the next — every fastener spacing, every flashing detail, every clearance gap is done the same correct way every time.
What to Check Before You Choose Any Siding Product
- Ask what climate zone the product is actually engineered for, not just where it's commonly sold
- Ask how the installer handles flashing at windows, doors, and roof intersections — this matters more than the siding material itself
- Ask what the warranty actually covers: material defects only, or labor and installation too
- Ask how the product performs against wind-driven rain, not just standing water
- Ask what maintenance is realistically required in year five, ten, and twenty — not just year one
- Get a straight answer about fire rating if you're near brush, trees, or in a wildfire-smoke-prone season
- Ask to see the manufacturer's own climate zone recommendations for your product and profile
Our Bottom Line
We're not telling Lynden homeowners that vinyl siding is a bad product in every application — it isn't, and plenty of homes around Whatcom County wear it just fine. What we're telling you is that we've chosen not to install it here, because we don't think it's the right long-term match for a climate that combines driving rain, salt air, and a moss season that lasts most of the year. James Hardie fiber cement is the product we trust to hold up to those conditions without asking a homeowner to gamble on installation quality doing all the work. When we put a product on your home, we want to be able to stand behind it twenty years from now, not just at the final walkthrough.
If you're weighing siding options for a Lynden home, we're happy to walk your property, talk through what your specific exposure looks like, and give you a free, no-pressure estimate — no obligation, just a straight answer.