LP SmartSide vs James Hardie: Which Siding Is Right for Your Home?

If you’re planning to replace your siding, you’ve probably heard of two popular options: LP SmartSide and James Hardie. Both are premium products that look like traditional wood siding but offer better durability than solid wood. Yet they’re fundamentally different materials with different strengths, costs, and maintenance requirements.

Choosing between them requires understanding the key differences. For Indianapolis and Central Indiana homeowners, this decision impacts both your budget and how long your investment will last. Let’s compare these two popular products side by side.

Material Composition: The Fundamental Difference

LP SmartSide is engineered wood siding — a composite made of wood strands bonded with resin and coated with protective sealant. It has a wood grain appearance and is designed to mimic traditional wood siding.

James Hardie (specifically ColorPlus) is fiber cement siding — a blend of Portland cement, silica, and wood fibers. Despite the name, it contains no asbestos (older versions did, but modern Hardie is asbestos-free). Fiber cement is much denser and harder than engineered wood.

This material difference is the root of nearly every other distinction between these two products.

Durability and Lifespan

James Hardie has a significant durability advantage. Fiber cement resists rot, insects, and moisture damage in ways engineered wood cannot. James Hardie typically lasts 30-50+ years with proper maintenance, and the company offers a 15-30 year warranty depending on the specific product and location.

LP SmartSide is more vulnerable to moisture and rot, especially in Indiana’s humid climate. Even with factory treatment and protective coatings, engineered wood can develop rot if water penetrates the surface. LP typically lasts 20-30 years and comes with a 20-year warranty in most markets.

In Indiana’s freeze-thaw climate and humid summers, James Hardie’s superior moisture resistance is a real advantage. This material can handle the seasonal challenges we face better than engineered wood.

Durability Winner: James Hardie by a significant margin

Cost Comparison

This is where LP SmartSide makes its case. Engineered wood is less expensive upfront.

LP SmartSide material cost: Roughly $2-3 per square foot

James Hardie material cost: Roughly $4-6 per square foot

That’s a substantial difference across the entire exterior of your home. For a typical 2,000 square foot project, you could expect to pay $4,000-$6,000 more for James Hardie materials alone.

However, the total cost picture is more complex. Fiber cement is denser and harder to cut, requiring specialized saws and slower installation. Labor costs for James Hardie typically run 15-25% higher than LP SmartSide.

Total installed cost for LP SmartSide: $8,000-$15,000 depending on home size and complexity

Total installed cost for James Hardie: $12,000-$25,000 for the same home

That said, consider the lifespan difference. If LP lasts 25 years and James Hardie lasts 40-50 years, the cost per year of durability is more favorable for fiber cement.

Cost Winner: LP SmartSide (lower upfront cost), but James Hardie offers better long-term value

Appearance and Color Options

Both products offer wood grain textures and multiple color options. LP SmartSide comes in standard painted finishes and a ColorSmartPlus factory-primed option. It has a realistic wood appearance because it’s actually made from wood.

James Hardie ColorPlus comes in a wider range of factory-finished colors and finishes, including more contemporary options. The wood grain appearance is convincing, though some people prefer LP’s more authentic wood look.

Both products can be painted over if you want to change colors. However, LP requires repainting more frequently (every 5-7 years) due to its engineered wood nature. James Hardie’s paint typically lasts longer.

Appearance Winner: Tie — both look excellent, with slight preference depending on personal taste

Maintenance Requirements

Here’s where the materials really diverge:

LP SmartSide requires regular painting or staining to protect the wood. SPF (treated lumber) requires repainting every 5-7 years to maintain protection. Without proper maintenance, the protective sealant breaks down, allowing moisture to penetrate and rot to begin. Maintenance is not optional — it’s essential to preserve the investment.

James Hardie comes factory-finished with ColorPlus, which is excellent. The paint typically lasts 10-15 years before needing refresh. Even without repainting, fiber cement resists moisture, rot, and insects. Maintenance is recommended but not absolutely necessary for durability.

For homeowners who don’t want to deal with regular repainting, James Hardie is significantly less burdensome.

Maintenance Winner: James Hardie (less frequent, less critical)

Moisture and Pest Resistance

Indiana’s humidity and seasonal moisture are challenges for engineered wood siding. Any gaps, cracks, or failed sealant allow moisture to penetrate LP SmartSide. Once water gets behind the siding, rot develops relatively quickly and is expensive to repair.

James Hardie’s fiber cement is inherently resistant to moisture. Water doesn’t penetrate the material itself, so moisture behind the siding won’t cause the siding to fail. It’s also completely resistant to termites, carpenter ants, and other wood-boring insects.

For Indiana homes, especially those in humid or wooded areas, James Hardie’s superior moisture and pest resistance is valuable peace of mind.

Moisture/Pest Resistance Winner: James Hardie decisively

Installation and Compatibility

Both products install similarly with standard trim, flashing, and fastening. However, there are some practical differences.

LP SmartSide can be cut and fastened with standard wood-working tools. James Hardie requires specialized fiber cement saws, which means experienced installers are more important. Not all contractors have the equipment and experience for quality fiber cement installation.

If you’re working with an installer, confirm they have experience with whichever product you choose. Poor installation can drastically reduce the lifespan of either material.

Installation Winner: LP SmartSide (easier, simpler), but James Hardie is worth the extra effort for experienced contractors

Which Should You Choose?

Choose LP SmartSide if:

• Budget is your primary concern
• You’re willing to commit to regular painting and maintenance
• You don’t expect to stay in the home for 30+ years
• You prefer a more authentic wood appearance
• You’re replacing siding on a smaller project where material costs matter most

Choose James Hardie if:

• Long-term durability and lower maintenance are priorities
• You plan to stay in your home for 25+ years
• You’re in a high-humidity or wooded area with moisture concerns
• You want to minimize future repainting
• You value pest resistance and moisture protection
• Resale value is a concern (Hardie is generally viewed as a premium siding option)

The Bottom Line

LP SmartSide is an excellent, affordable siding option that will look beautiful for 20-25 years with proper maintenance. James Hardie costs more upfront but lasts significantly longer, requires less maintenance, and offers superior protection against Indiana’s climate challenges.

For most Indianapolis homeowners planning to stay long-term, James Hardie is the better investment. For those with shorter timelines or tight budgets, LP SmartSide is a solid choice if you’re committed to regular maintenance.

Want to explore more about siding options for your home? Check out how long different siding materials last or learn about all our residential siding services.

Ready to decide which siding is right for your Indianapolis home? The team at SPG Roofing & Exteriors can assess your specific needs, budget, and climate considerations. Contact us today at (317) 707-6637 for a free consultation and estimate on LP SmartSide or James Hardie siding installation.