Mount Vernon We get asked about vinyl siding more than almost any other product. It's affordable, it's everywhere, and plenty of homes around Skagit County wear it just fine. But we don't install it — and we think you deserve a straight answer about why, not a sales pitch dressed up as advice.
What vinyl siding actually does well
Vinyl earned its popularity honestly. It's inexpensive up front, it doesn't need painting, and for a lot of climates it holds up adequately for years with minimal attention. If budget is the only variable in the equation, it's not a foolish choice. We're not here to tell you vinyl is a scam or that everyone who has it made a mistake.
Our issue isn't with the material in a vacuum. It's with how that material performs specifically here, on homes exposed to Mount Vernon's weather, year after year.
Why we don't put it on Skagit County homes
It moves — and this region gives it plenty of reasons to
Vinyl expands and contracts with temperature swings more than fiber cement does. Skagit Valley doesn't have extreme heat, but we do have persistent damp cold, foggy mornings, and stretches of driving rain that soak siding for days at a time. Over enough seasons, that constant cycling can loosen fastener points, create waviness, and open gaps at seams and trim — exactly the places where wind-driven rain wants to get behind the cladding.
Salt air speeds up the wear on hardware and seams
Being close to Puget Sound and the tidal reaches of the Skagit River means homes here deal with a steady dose of salt-laden air. Salt exposure doesn't rot vinyl panels themselves, but it does accelerate corrosion on the fasteners, flashing, and trim details that vinyl systems depend on to stay tight and weatherproof. When those small metal parts degrade faster than the siding around them, the whole assembly's weather resistance drops before the panels look obviously worn.
It doesn't stop moisture — it just moves it along
Vinyl is installed loose by design, hung on a wall so it can float and drain rather than sealed tight. That's fine when the water management behind it — the house wrap, flashing, and drainage plane — is done right. But it means vinyl offers your walls no real drying capacity of its own. In a climate with our rainfall totals and humidity, any weakness in the underlying moisture barrier gets exposed faster than it would under a stiffer, better-adhered cladding system.
Moss and mildew show up quickly in the shade
Mount Vernon's long moss season isn't a myth — it's a function of our tree cover, humidity, and mild winters that never really dry things out. Vinyl's textured surface and the gaps at its laps and J-channels give moss, algae, and mildew plenty of places to take hold, especially on north-facing walls and under eaves. Cleaning it means pressure washing, which if done carelessly can force water behind panels and cause the exact problems you were trying to prevent.
It can't be repaired invisibly, and color fades unevenly
Vinyl's color runs through the material, but UV exposure fades it over time, and that fading is rarely uniform across a wall that gets more sun on one side than another. Because color batches vary between manufacturing runs, a replacement panel bought years later next to faded original siding is often a visible mismatch. A cracked panel from a ladder mishap or storm debris can turn into a patchwork repair instead of a clean fix.
Impact damage is a real risk in a stormy region
We get our share of windstorms off the Sound, and falling branches are a normal part of living among the trees that make this area what it is. Vinyl is more prone to cracking and puncturing under impact than fiber cement, particularly in colder weather when it becomes more brittle.
What we install instead, and why
We install James Hardie fiber cement siding exclusively. It's non-combustible, dimensionally stable across our temperature and humidity swings, and far more resistant to moss, mildew, and impact damage than vinyl. Hardie's ColorPlus factory finish is baked on and warranted against fading, so you're not stuck matching old panels to a discontinued color years down the road. Hardie also engineers specific product lines for climates like ours — built to handle sustained moisture exposure rather than just tolerate it.
None of this means every vinyl-sided home in Mount Vernon is in trouble, or that vinyl is a bad product everywhere. It means that for the specific combination of rain, humidity, salt air, and moss pressure we deal with in Skagit County, we don't think it's the right long-term investment for a homeowner's largest asset — and we'd rather turn down that installation than sell you something we wouldn't put on our own homes.
Talk to us before you decide
If you're weighing siding options for a Mount Vernon home, we're happy to walk your property, look at your exposure, and give you an honest read on what will actually hold up. Reach out for a free, no-pressure estimate — no obligation, just a straight assessment of what your home needs.