James Hardie vs. LP SmartSide: Which Should You Choose?
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Get free quotes to compare James Hardie and LP SmartSide
Get free quotesJames Hardie vs. LP SmartSide
| James Hardie (fiber cement) | LP SmartSide (engineered wood) | |
|---|---|---|
| Core material | Cement, sand, cellulose fiber | Engineered strand wood with resin |
| Weight | Heavier — needs more installation labor | Lighter — easier and faster to install |
| Fire resistance | Non-combustible | Treated for fire resistance, but still wood-based |
| Moisture/rot resistance | Very high | Good, if factory coating and caulking are maintained |
| Impact resistance | Good, can crack under strong impact | Very good — a commonly cited advantage |
| Typical installed cost | $8–$13/sq ft | $5–$9/sq ft |
| Manufacturer warranty | Typically 30 years (non-prorated on many lines) | Typically 5-year finish / 50-year substrate limited warranty (check current terms) |
The real trade-off: cost and weight vs. workability
James Hardie's fiber cement is the more "bulletproof" material against fire, moisture, and pests, which is exactly why it's the default recommendation in wildfire-prone and humid regions — but that comes from a genuinely heavier, denser material that costs more both to buy and to install (it requires specific blades and more labor time). LP SmartSide, being engineered wood, is significantly lighter and faster to install, which shows up as real savings on labor, and it's held up well in independent impact-resistance comparisons. The trade-off is that it's still fundamentally a wood-based product — its performance depends more on the factory coating staying intact and joints being properly caulked and maintained than fiber cement's does.
Pro tip from our network contractors
Ask any contractor quoting LP SmartSide whether they're using LP-approved installation accessories (trim, fasteners, caulk) and following LP's published installation instructions — SmartSide's warranty coverage typically depends on correct installation per the manufacturer's specifications, more so than with some other siding materials.
Which one fits your situation
Choose James Hardie if you're in a wildfire-prone or very humid/pest-prone area, want the longest possible lifespan with the least ongoing vigilance, and the budget supports the higher installed cost. Choose LP SmartSide if you want a lighter, faster installation, strong impact resistance (useful in hail-prone areas), and a lower price point without going all the way down to vinyl. Both are a step up from basic vinyl in durability and curb appeal — see types of siding materials compared for how they stack up against the full range of options.
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Get free quotesFrequently asked questions
Is James Hardie better than LP SmartSide?
James Hardie's fiber cement generally offers better fire and moisture resistance, while LP SmartSide's engineered wood is lighter, cheaper to install, and performs very well against impact. Neither is universally "better" — the right choice depends on your climate and budget.
Is LP SmartSide as durable as fiber cement?
It performs well, especially on impact resistance, but as a wood-based product it depends more on maintaining the factory finish and caulking than fiber cement does, which is inherently more moisture- and pest-resistant.
How much more expensive is James Hardie than LP SmartSide?
James Hardie typically runs $8-$13 per square foot installed versus $5-$9 for LP SmartSide — roughly 30-50% more, driven partly by the material's greater weight and installation labor requirements.
Does LP SmartSide need to be painted?
LP SmartSide comes with a factory-applied primer or finish, and most installations are painted on-site or ordered pre-finished — check current product lines, since finish options and warranty terms can change.
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