What Is James Hardie Siding and Why Do Seattle Homeowners Love It?

James Hardie siding is fiber cement — a manufactured composite material, not a natural wood product. The composition: • Portland cement (the same base material as concrete) — provides hardness and rot resistance • Ground sand — adds density and fire resistance • Cellulose fiber (processed wood pulp) — provides flexibility and reduces brittleness • Water and proprietary additives — binding and curing agents These ingredients are mixed, formed into boards or panels, and cured under heat and pressure. The result is a material with the appearance of wood grain but the properties of cement. Why this composition is ideal for Seattle: • Cement doesn't rot — moisture cannot degrade the material • No organic substrate — insects have nothing to eat • Dimensional stability — doesn't swell and shrink with Seattle's moisture cycles • Non-combustible — fire cannot spread through the material

James Hardie manufactures multiple siding products, each suited to different applications: HardiePlank Lap Siding: The most popular product — horizontal lap siding that mimics painted cedar. Available in smooth and wood-grain textures. Used on 90% of James Hardie installations in Seattle. HardiePanel Vertical Siding: Large-format vertical panels (4'x8' standard). Used for board-and-batten looks, contemporary designs, and accent sections. Very popular on modern farmhouse and ADU projects. HardieShingle Siding: Shingle-profile siding that mimics cedar shake. Used as accent on gable ends or as the primary siding on cottage and craftsman-style homes. HardieTrim: Pre-primed trim boards for corners, fascia, window and door casings. Designed to integrate with siding products and resist the moisture that deteriorates painted wood trim. ColorPlus Technology: Available on most products — factory-baked paint applied before shipping. 15-year limited fade and chip warranty. Eliminates field painting quality variability.

James Hardie is the #1 siding product in new construction and remodeling in Seattle and the Pacific Northwest. This dominance isn't accidental. The Pacific Northwest reasons: • Seattle's climate (37" of rain/year) punishes natural wood siding — cedar and redwood still rot over time • James Hardie was specifically engineered for high-moisture climates as part of its product development • It became the default spec for builders in the 1990s and has maintained dominance since • Buyers in Seattle expect it — listing agents and home inspectors know the brand The contractor perspective: • It requires skilled installation (heavier, requires proper clearances) — which filters out less-qualified contractors • Certified Preferred Remodeler program ensures installation quality is maintained • The 30-year warranty provides clear coverage that homeowners can rely on For any home in Seattle undergoing siding replacement, James Hardie HardiePlank with ColorPlus finish is the default recommendation — unless budget constraints or specific aesthetic needs point to LP SmartSide. Call [PHONE] for a free estimate on James Hardie siding for your home.