LP SmartSide vs. James Hardie: A Head-to-Head
The two leading premium siding brands compared on cost, install, and warranty.
LP SmartSide and James Hardie dominate the premium siding market. Both significantly outperform vinyl on longevity and resale value. The choice between them comes down to install cost, weight, and how you weigh paint maintenance vs. dent resistance.
Material differences
James Hardie (fiber cement): 5/16" thick cementitious panel. Won't burn, won't rot, won't dent. Heavy (about 2.5 lbs/sq ft) requiring careful framing. Lifespan: 40-50 years.
LP SmartSide (engineered wood): treated wood-strand product with overlay. Lighter, easier to cut and install. Better impact resistance (won't crack from hail or basketballs). Lifespan: 25-40 years with diligent paint maintenance.
Cost and warranty
James Hardie installed: $16,000-$28,500 on a typical 1,800 sq ft home. LP SmartSide: $13,500-$23,500. The 20-30% cost premium for Hardie reflects material cost (cement is heavier and harder to handle) and labor (specialized cutting tools required).
Warranties: Hardie offers 30-year non-prorated material warranty plus 15-year ColorPlus finish warranty. LP SmartSide offers a 50-year prorated material warranty plus 5/15-year paint coverage depending on finish.