Armor Exteriors
March 18th, 2026
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How Much Does Hardie Siding Cost in Western Washington?

When it’s time to replace your siding, one of the first things homeowners want to know is: “How much is this really going to cost me?”

If you’ve been researching options and landed on Hardie Plank siding, you’re headed in the right direction. It’s built for wet Washington weather and holds up far better than cheaper options. But like any long-term investment, it comes with a higher price tag—and some confusion around what’s fair and what’s inflated.

We install Hardie siding throughout Thurston, Lewis, and southern Pierce Counties, and we’ve seen firsthand what this type of project costs. This guide lays out realistic pricing ranges, real-world project examples, and the main factors that drive cost.

Our goal is simple: help you make an informed decision and understand what goes into a durable, professional siding install.

What Does a Full Hardie Siding Project Cost?

Quick Answer

Across the region—from Rochester and Grand Mound to Chehalis and Centralia— most Hardie siding replacements in Washington fall between $10,000 and $35,000. Smaller single-story homes often land around $12K–$15K, while larger or more detailed homes (second stories, multiple gables, upgraded trim) can run $25K–$35K+. Below we show real local examples and the exact factors that move a price up or down.

Where your project lands in that range depends on your home’s layout, trim detail, siding finish, and how thoroughly your contractor does the job.

Project Type Typical Cost Range

Small rambler, minimal trim $10,000–14,000
Mid-size home, 2–3 gables, basic trim $15,000–25,000
Large home, complex layout, upgraded trim $25,000–35,000+

We’ve been on both ends of this range—and the difference usually comes down to how much trim, gables, scaffolding, and detail work is involved. Shortcuts can lower the bid—but they’ll shorten the lifespan, too.

Real Projects: Local Examples with Actual Costs

Here are two small projects we recently completed in the Rochester area, both using Hardie Plank lap siding primed (not ColorPlus).

Project 1 – Rambler in Rochester

1,350 sq ft single-story home
3 gables, moderate layout complexity
Vinyl siding tear-off and Hardie install
Primed Hardie Plank + Hardie trim, painted by homeowner

Total cost: $12,300

Project 2 – Doublewide Outside Grand Mound

1,152 sq ft, very simple layout
Included new cedar fascia
Primed Hardie Plank + pre-primed cedar trim

Total cost: $12,500

These are smaller projects but solid, moisture-smart installs—not bargain jobs. No shortcuts, no missed steps.

Ready to price your home? Request an estimate — fast, clear, no pressure.

What Drives the Cost of a Hardie Siding Job?

Here are the biggest cost variables we account for when bidding:

Layout complexity — Gables, dormers, and pop-outs all require more trim and time.
Height & access — Two-story homes need scaffolding and take longer to finish safely.
Installation method — We only install using joint and window flashing. It’s the right way to do it in our climate—and it adds both labor and value.
Trim level — Wide decorative or custom trims or detailed window wraps can double the trim budget.
Finish type — Primed boards require paint but cost less; ColorPlus costs more but comes prefinished.

How Does Hardie Compare to Other Options?

We often get asked how Hardie Plank siding stacks up against other materials like LP SmartSide or traditional cedar siding. In our experience, Hardie outperforms both when it comes to durability, moisture resistance, and long-term value—especially in the wet Washington climate.

LP SmartSide can be a cost-effective choice up front and is easier to cut and install, but we’ve seen a number of jobs in this region where LP products have swollen or degraded due to moisture exposure—particularly when not installed perfectly. It’s a decent product in dry conditions but riskier in the Pacific Northwest.
Cedar siding has a classic look and can work well in certain settings, but it comes with high maintenance needs and a shorter lifespan unless carefully detailed and regularly sealed. In our wet winters, cedar is prone to rot, mold, and discoloration if not maintained consistently.
Hardie Plank, by contrast, is made of fiber cement and built specifically to handle the kind of weather we get here. It resists swelling, warping, and fire, and when it’s installed with proper flashing and ventilation, it can last 30 to 50 years with minimal upkeep. That’s why we recommend it—and specialize in installing it the right way.

Why Our Bids Aren’t the Cheapest

We’ve been called to fix other contractors’ installs more times than we can count. Most of the problems come down to one thing: they skipped steps.

No flashing behind butt joints, just caulk
Caulk that cracks within a year
No lath to create an air gap
No Z-metal over windows

At Armor Exteriors, we install Hardie the way it’s meant to be installed—not just to meet code, but to actually protect your home long-term. We won’t always be the lowest bid—but we will be the most thorough, honest, and durable. Learn more about our values.

Service Area

We install siding across: Rochester, Grand Mound, Chehalis, Centralia, Napavine, Oakville, Tumwater, Tenino, and throughout Lewis and Thurston Counties.

You’ll see our work in subdivisions like Tahoma Meadows, Field of Dreams, Scatter Creek, and Applegate—as well as on private rural homes across the region.