LP SmartSide Siding — Is It the Right Choice for Your Indiana or Illinois Home?

LP SmartSide has become a serious competitor to James Hardie in the Midwest siding market — and for good reason. But it’s not the right choice for every home or every homeowner. Here’s the honest breakdown.

What LP SmartSide Is

LP SmartSide is an engineered wood siding product manufactured by Louisiana-Pacific. It’s not solid wood — it’s a composite of wood strands bound with resins and treated with a proprietary preservative system called SmartGuard, which provides resistance to moisture, fungal decay, and termites.

The result is a product that looks like wood, can be painted like wood, and performs significantly better than natural wood in harsh climates — while costing less than fiber cement (James Hardie).

Professional inspection ensures no damage goes undetected

How LP SmartSide Performs in Northwest Indiana and Illinois

LP SmartSide was specifically engineered for climate extremes — including the kind of freeze-thaw cycling and moisture exposure that characterizes Lake County, Porter County, and northern Illinois.

Moisture resistance: SmartGuard treatment provides meaningful protection against moisture infiltration, which is critical in our climate. Properly installed LP SmartSide — with all cuts primed and all penetrations caulked — performs well long-term.

Temperature performance: Unlike vinyl, LP SmartSide maintains its physical properties across the temperature range we experience. It doesn’t become brittle in extreme cold or warp in heat.

Impact resistance: Better than vinyl, not quite as good as James Hardie fiber cement. LP SmartSide dents rather than cracks on significant impact — generally more repairable than vinyl but less resistant than Hardie.

Paint retention: Factory primed (not finished — requires field painting) or available pre-finished in select colors. Field-applied paint lasts 8-12 years before repainting is needed — comparable to primed Hardie, less than Hardie’s ColorPlus factory finish.

LP SmartSide vs. James Hardie — The Key Differences

Quality materials and expert installation make the difference

Where LP SmartSide Wins

Authentic wood appearance: LP SmartSide’s texture more closely mimics real wood grain than Hardie’s smoother fiber cement surface. For craftsman bungalows, historic homes, and properties where authentic wood character matters, SmartSide often looks more natural.

Cost: The 15-25% cost advantage over Hardie is real. For homeowners on a tighter budget who want better than vinyl, LP SmartSide is a compelling middle option.

Weight: Lighter installation makes it easier to handle on tall structures and reduces structural load slightly.

Alamo Roofing serves Lake County, Porter County & northern Illinois

Where James Hardie Wins

Fire resistance: Fiber cement is non-combustible. This matters in communities near wooded areas and provides peace of mind that LP SmartSide’s treated wood cannot fully match.

Paint longevity (ColorPlus): Hardie’s factory-applied ColorPlus finish genuinely lasts 15+ years without repainting. LP SmartSide’s factory prime or pre-finish requires painting within the first year (if primed) or repainting sooner than ColorPlus.

Warranty: Hardie’s 30-year warranty exceeds LP SmartSide’s limited warranty terms.

Our Honest Recommendation

Both products are legitimate choices for Northwest Indiana and Illinois homes. LP SmartSide is the right call when:

• Budget is constrained and you need better than vinyl
• Authentic wood appearance is a priority
• The home is craftsman or traditional style where wood texture fits architecturally

Hardie is the right call when:

• Fire resistance matters
• You want the longest paint warranty with ColorPlus
• You’re maximizing resale value in a market that recognizes Hardie