James Hardie vs Cedar Siding: Which Is Right for Your Seattle Home?

Two of the most popular siding choices for Seattle homes are James Hardie fiber cement and Western Red Cedar. Both look beautiful on Craftsman, modern, and traditional Pacific Northwest homes. They cost similar money. But they’re fundamentally different materials — and picking the right one depends on what you care about.

Here’s the honest comparison we give every client.

Quick comparison table

Cost

Hardie wins on upfront cost. A typical 2,000 sq ft Seattle home runs $30,000-$48,000 for Hardie versus $42,000-$62,000 for proper cedar. That gap doubles when you factor in cedar’s ongoing maintenance (stain costs $4-7 per sq ft every 3-7 years versus Hardie’s 15-year paint cycle).

See our siding replacement cost breakdown for full pricing.

Longevity in the Pacific Northwest

This is where Seattle’s climate changes the answer from the national average:

James Hardie in Seattle

James Hardie’s HZ10 climate-engineered formulation is specifically designed for our region. It handles freeze-thaw cycles, 38+ inches of annual rain, and coastal salt air (Mukilteo, Edmonds, Shoreline). The ColorPlus factory finish lasts 15+ years before needing repainting. Expected service life: 50+ years.

Cedar in Seattle

Cedar CAN last 40-50 years in Seattle — but only if installed correctly. The three details that matter:

1. Six-side primed with oil-based primer (factory-primed is better than site-primed)
2. Ventilated rainscreen — at least 3/8″ airspace behind the siding. See how rainscreens work.
3. Stainless steel ring-shank nails — galvanized nails bleed rust through cedar within 3 years

Without any of these three, cedar fails in 8-12 years in Seattle. The nail holes ring out, the back of the boards trap moisture, and you’re replacing siding within a decade.

Maintenance

Hardie is mostly maintenance-free. Wash it with a garden hose once a year. Touch up the factory finish in year 15-20.

Cedar needs love:

• Re-stain every 3-7 years ($4-7 per sq ft — about $6,000-12,000 for a typical home)
• Check for nail pops annually
• Replace individual boards that split (not uncommon in year 10-15)
• Watch for mildew on north-facing walls

If your time is worth money and you don’t want to think about your siding, Hardie wins. If you genuinely love the texture and smell of real cedar, the maintenance is part of the charm. If cedar wins for you, our Seattle cedar siding installation guide covers back-priming, rainscreen, and real pricing.

HOA acceptance

In Eastside HOAs (Bellevue Somerset, Sammamish Plateau, Kirkland Bridle Trails), both materials are generally accepted. But:

• James Hardie Artisan series (the thick luxury profile) is the most commonly pre-approved material because it mimics cedar shadow lines without the maintenance
• ColorPlus color palette is usually acceptable without a color variance
• Real cedar requires more HOA paperwork because color/grain variations need approval

Resale value

Both materials recover about 75-85% of their cost at resale according to recent Remodeling Magazine data for the Seattle market. Cedar has a slight edge in premium neighborhoods (Medina, Clyde Hill, Mercer Island) where buyers expect authentic materials. Hardie has the edge in suburban Eastside and Snohomish County where low maintenance is the higher priority.

Our honest recommendation

For 80% of Seattle homeowners, James Hardie Artisan with ColorPlus is the right choice. You get the deep shadow lines and craftsman look of cedar without the ongoing maintenance. For the other 20% — historic homes, true craftsman bungalows, hillside homes with specific architectural requirements — real cedar is irreplaceable.

We install both. We’re a James Hardie Certified Installer (certified) and we’ve been doing cedar work on Seattle homes for over a decade. Either way, our written quote will be line-itemized so you can see exactly what you’re getting.