Siding Installation in Southwest Washington
Siding in Southwest Washington has one job above all others: keep months of rain out of the wall assembly. Our team replaces failing or dated siding with fiber cement, engineered wood, or vinyl, installed over a proper weather-resistive barrier and rain-screen gap so moisture that gets behind the cladding can drain and dry instead of feeding rot — and we detail every wall for the added wind exposure homes see closer to the Columbia River Gorge.
Siding is the workhorse of your home's exterior, and in Southwest Washington it works hard — long wet seasons, steady moisture, and, in Camas, Washougal, and the Gorge towns, sustained wind. As part of our exterior remodeling services, we replace failing wood and dated siding with fiber cement, engineered wood, or vinyl — installed rain-screen style over a proper moisture barrier so the whole wall system protects your home, not just the surface.
- James Hardie HZ5 fiber cement siding
- LP SmartSide engineered wood siding
- Insulated and standard vinyl siding
- Rain-screen furring for drainage behind the cladding
- Full weather-resistive barrier and house-wrap installation
- Sheathing inspection and dry-rot repair during tear-off
- Flashing at windows, doors, and penetrations
- Soffit, fascia, and trim replacement
- Wind-rated fastening schedules for Gorge-exposed sites
- Color and profile matching for additions and repairs
We install the three siding materials that make the most sense for Southwest Washington homes. Each has its own strengths — explore the options and how they hold up here.
James Hardie Fiber Cement
Dense HZ5 fiber cement engineered for the Pacific Northwest, installed rain-screen style so it sheds our steady moisture and holds its baked-on color for years. Our most durable siding.
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LP SmartSide Engineered Wood
Real wood-grain warmth with treated strands that resist moisture and impact — lighter than fiber cement and backed by LP's 5/50 warranty.
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Vinyl Siding
The budget-smart, no-repaint option in a wide color range — installed with the fastening schedule our wind and temperature swings call for.
Learn MoreMost homeowners don't notice siding has failed until moisture has already reached the sheathing. These are the warning signs we see most often on Southwest Washington exteriors.
Swelling or Delaminating Wood Siding
Older T1-11 and hardboard-style wood siding soaks up moisture and fails at the bottom edges and seams. Once it swells or delaminates, patching won't hold — replacement solves it.
Soft Spots & Active Rot
A screwdriver that sinks into a wall or trim board without resistance means the wood behind is compromised. Rot spreads quietly under paint and caulk until the sheathing or framing is affected.
Fading or Chalking
If your hand picks up a chalky residue, the finish has worn out. Common on older vinyl and field-painted siding on south- and west-facing walls.
Warping or Buckling
Panels that no longer sit flat usually mean trapped moisture behind the siding — a sign the drainage plane has failed and water isn't getting out.
Mildew & Streaking
Our long wet seasons drive mildew growth on shaded, north-facing walls. Recurring growth or streaking means the siding is holding moisture against the sheathing instead of shedding it.
Rising Energy Bills
Deteriorated siding often means compromised air sealing. If heating costs climbed without another cause, failing siding may be part of the loss.
Get Your Free Siding Estimate
Free in-home consultation across Clark and Cowlitz counties — fixed-price proposals and a written workmanship warranty.
Siding Assessment
We inspect the existing siding, trim, and any signs of moisture behind it, then talk through material options suited to your home, your site's rain and wind exposure, and your budget.
Material Selection & Order
You choose the siding type, profile, and color. We order materials along with house wrap, rain-screen furring, flashing, and trim so the full wall assembly is accounted for.
Tear-Off & Repair
Old siding comes off, we inspect and repair the sheathing where water or dry rot has gotten in, and install the weather-resistive barrier, rain-screen gap, and flashing.
Installation & Finishing
New siding, corner boards, trim, soffit, and fascia are installed with proper fastening and sealing. We complete a final inspection and clean the site.
How siding materials perform in our marine climate and what goes on behind the surface. Open the topics that matter for your home.
Choosing a Siding Material for Southwest Washington
There's no single "best" siding — the right choice depends on your budget, your home's style, and how much maintenance you want. For our mix of steady rain, moisture, and Gorge wind, we most often recommend fiber cement or engineered wood, with vinyl a solid value option.
Fiber cement (James Hardie) is dense, rigid, and engineered for our HZ5 HardieZone, so it doesn't feed rot in our wet seasons and holds its factory color for years. It costs more up front and is heavier to install.
Engineered wood (LP SmartSide) gives a real wood-grain look with treated strands that resist moisture and impact. It's lighter and less brittle than fiber cement and is backed by LP's well-known 5/50 warranty.
Vinyl never needs repainting, comes in a wide color range, and is the most budget-friendly refresh — installed with the fastening schedule our wind exposure calls for, especially in the Camas-Washougal- Gorge corridor.
What Goes On Behind the Siding
The weather-resistive barrier behind your siding is just as important as the siding itself — it's the last line of defense against water, and it's invisible once the job is done. We never shortcut it.
After tear-off, we inspect and repair the sheathing, then install house wrap with taped seams and a rain-screen furring gap so water is channeled down and out rather than trapped against the wall cavity. Every window, door, and penetration is flashed and integrated with the house wrap in a shingle-lap pattern. Improper flashing is the most common cause of hidden water damage behind siding in our climate, and it's exactly what we design out.
This is settled building science. Building Science Corporation's moisture-control research is clear that every cladding — siding, brick, stucco — lets some water through, so the drainage plane behind it is what actually keeps the wall dry. And the U.S. DOE Building America program calls for base flashing at least 8 inches above grade with the house wrap lapped over it — details we hold to so splash-back and runoff can't saturate the bottom of the wall.
Siding & Wind: Fastening for the Columbia River Gorge
Camas, Washougal, North Bonneville, Stevenson, and Carson sit at the mouth of, or inside, the Columbia River Gorge — one of the windiest corridors in the state. Standard fastening schedules that work fine in Vancouver or north Clark County can under-perform here.
For homes in that corridor, we tighten fastener spacing, follow the manufacturer's high-wind installation details, and pay extra attention to corner and edge conditions where wind uplift concentrates. It's a detail that costs little to get right during installation and is expensive to fix after a panel has come loose.
Siding installation pairs naturally with windows, trim, and exterior painting for a complete exterior renovation.
What siding holds up best in Southwest Washington?
Fiber cement and engineered wood are the two we most often recommend, both installed over a rain-screen gap so any moisture that gets behind the cladding can drain and dry rather than sitting against the sheathing. Vinyl remains a budget-friendly option in less wind-exposed areas. We match the material — and the installation detailing — to your home and its exposure.
What is a rain-screen assembly and why does it matter here?
A rain-screen leaves a small drainage gap between the siding and the weather-resistive barrier, so any water that works its way behind the cladding has somewhere to drain and air to dry it out. In a climate that gets months of steady rain, that gap is one of the biggest factors in whether siding lasts or hides rot behind it. We build it into every re-side.
Do you check for damage behind the old siding?
Yes. Once the old siding is off, we inspect the sheathing and framing for moisture damage and dry rot before installing anything new. We show you anything we find and repair it so the new siding goes on over a sound wall.
How long does a siding project take?
A full re-side on a typical home usually takes one to a few weeks depending on size, number of stories, and how much repair is needed underneath. Partial repairs are faster.
Do you inspect the sheathing before installing new siding?
Always. Once the old siding is off, we inspect every foot of sheathing and framing for moisture damage and rot before anything new goes on — a step that matters on every home in our wet climate, especially older ones. We show you whatever we find and repair it so the new siding installs over a sound wall. What's behind the siding matters more than the siding itself.
Can you install new siding over the existing siding?
We generally recommend against it. Installing over old siding hides the sheathing, so moisture damage and rot go undetected, and it adds thickness that complicates trim, window, and door details. For fiber cement and engineered wood, manufacturers typically require installation over clean sheathing with fresh house wrap and a rain-screen gap for warranty coverage. We remove the old siding so the wall system is done right.
What is rain-screen siding, and why does it matter here?
A rain-screen assembly leaves a small ventilated gap between the back of the siding and the house wrap, so any water that gets past the cladding can drain and the wall can dry out rather than trapping moisture against the sheathing. In a climate as wet as Southwest Washington's, that gap is one of the biggest factors in how long a siding job actually lasts, and it's standard on the fiber cement and engineered-wood installations we do.
We provide siding installation to homeowners across the Vancouver metro, Clark County, the Columbia River Gorge, and the Lewis River and Cowlitz County corridor. Each community has its own dedicated page with local permitting, climate, and project detail — and each regional hub covers the surrounding areas we also serve.
The following government agencies, industry organizations, and official resources provide additional information relevant to your remodeling project.
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