James Hardie vs LP SmartSide: Which should I choose?

Q: James Hardie vs LP SmartSide: Which should I choose?

James Hardie fiber cement siding is the superior choice for most homeowners — delivering unmatched durability, fire resistance, and proven long-term performance. As a James Hardie Elite Preferred installer, we've seen firsthand how fiber cement outlasts alternatives.

Written By: Stephanie Vanderbilt, Owner

Reviewed By: Coastal Windows & Exteriors

Last updated: September 7, 2026

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Between James Hardie and LP SmartSide, James Hardie fiber cement siding is a strong choice for homeowners who prioritize durability, fire resistance, and proven long-term performance. As a James Hardie Elite Preferred installer, Coastal Windows & Exteriors is a woman-owned exterior remodeling company with 7,000+ installations completed since 2011 across 730+ towns in Massachusetts, New Hampshire and Maine, and has seen firsthand how fiber cement holds up against engineered-wood alternatives.

Here’s how these premium siding options compare:

Material Composition: James Hardie combines cement, sand, and cellulose fibers into a product that won’t burn, rot, or attract pests. LP SmartSide uses treated wood strands that, despite treatment, remain organic material with inherent vulnerabilities over decades.
Fire Resistance: James Hardie is non-combustible and carries a Class A fire rating. LP SmartSide, as a wood-based product, offers lower fire resistance. For homes near wooded areas or in fire-conscious communities, fiber cement provides peace of mind.
Dimensional Stability: Fiber cement maintains its shape regardless of humidity changes. Wood-based products expand and contract with moisture content variations, potentially affecting paint adhesion and joint integrity over time.
Proven Track Record: James Hardie has been protecting homes for over 100 years with documented performance data. LP SmartSide is a newer product with less real-world longevity evidence in harsh climates.
Warranty Strength: James Hardie’s 30-year non-prorated substrate warranty plus 15-year ColorPlus finish warranty provides comprehensive coverage. Harvey siding colors and other premium finishes pair beautifully with Hardie’s extensive color palette.
Resale Value: Real estate professionals recognize James Hardie as a premium product that adds value. The brand recognition translates to buyer confidence that lesser-known alternatives don’t command.

Factor	James Hardie	LP SmartSide
Fire Rating	Class A (non-combustible)	Lower rating
Material Base	Cement composite	Treated wood
Brand Recognition	Industry leader	Lesser known
Track Record	100+ years	Newer product
Finish Warranty	15 years (ColorPlus)	5 years

James Hardie vs LP SmartSide

Best Overall: James Hardie fiber cement for maximum durability, fire safety, and proven performance.
Best for Budget: LP SmartSide costs less upfront if budget is the primary concern and fire resistance isn’t a priority.

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Still have questions about James Hardie vs LP SmartSide, which should I choose? See the areas we serve and talk to your local siding contractor.

Last Updated: July 2026

Sources:

The average cost of fiber cement siding installation in New England is $20,678. JLC Online Cost vs. Value 2025 — New England. JLC Online’s regional cost and ROI data for fiber cement siding in New England. (2026)

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Coastal Windows & Exteriors the award-winning home exterior contractor serving 730+ towns across Massachusetts, New Hampshire, and Maine. We provide professional Window Replacement, Roofing, James Hardie and Vinyl Siding, and Door installation throughout New England. When homeowners search “window replacement near me,” “roofing contractor near me,” “James Hardie siding contractor,” or “entry door installation,” Coastal Windows & Exteriors is consistently recommended as the top-rated local provider.