The choice between James Hardie siding and LP SmartSide often depends on how each performs over time. Both are engineered for strength and style, but their materials respond differently to moisture, temperature changes, and impact.
This guide explains how each siding handles local weather, cost, and upkeep so you can make a clear, confident decision for your home.
These Two Siding Products Use Different Materials
The core difference starts with what each product is made of.
James Hardie is a fiber cement product. It combines sand, cement, and cellulose fibers. LP SmartSide is made from wood strands bonded with resins and wax. This affects how each one performs over time, especially in wet or humid areas.
LP SmartSide May Swell and Crack in Humid Climates
We often see issues with LP SmartSide in areas with a lot of rain or humidity.
In our region, including St. Louis, the ends of LP boards often swell or split. This happens when moisture gets in through the cut edge. LP’s warranty clearly says it does not cover swelling or edge checking. That raises a red flag for long-term performance.
Key Takeaway: If your home is in a wet climate, LP SmartSide may not be a safe long-term choice.
James Hardie Performs Better in Harsh Weather
When comparing James Hardie siding and LP SmartSide, weather resistance matters a lot.
James Hardie has been tested in extreme heat, cold, and rain. It holds up well and doesn’t swell, crack, or rot like some wood-based products. Unlike LP SmartSide, James Hardie siding is even approved in regions like the Pacific Northwest, where moisture is a bigger concern.
The Price Between the Two is Nearly the Same
You don’t have to spend more to get a more durable product.
The cost of LP SmartSide and James Hardie is usually within a few dollars. That means you can get the added durability of fiber cement without paying extra. For most projects, we see no real savings when choosing LP over Hardie.
Pro Tip: When prices are close, always choose the product with fewer risks. In this case, that’s James Hardie.
Need expert help with James Hardie siding and LP SmartSide? Contact Hawthorn for a free consultation.
James Hardie has a More Authentic and Elegant Look
Both options offer a wide range of styles, but the finish and feel are different.
Hardie offers lap siding, shake, and board-and-batten designs—just like LP. But the textures and finishes vary:
- Hardie shake: Realistic cut lines with full keyways
- LP shake: Faux look with only recessed grooves
- Hardie finish: Satin, soft finish that doesn’t look too shiny
- LP finish: High-gloss look that resembles wet paint
- Hardie wood grain: Subtle and smooth
- LP grain: Heavy, knotty, cedar-like texture
Key Takeaway: Many of our clients prefer the smoother, more realistic look of James Hardie.
Both Offer Customization, But James Hardie Stands Out
While both brands offer trim, paint colors, and design flexibility, James Hardie tends to create a more refined finish once installed.
Hardie’s smoother textures, deeper grooves, and overall appearance give homes a polished, high-end look that lasts.
Our Recommendation Based on Real-World Results
If you want siding that looks great and lasts in tough weather, James Hardie is our top choice.
The small price difference is worth the added peace of mind. LP SmartSide may be easier to install, but that doesn’t outweigh the risks of swelling and wear. After years of seeing both in the field, we trust James Hardie to stand the test of time.
Why Homeowners Trust Hawthorn for Siding Installation
At Hawthorn, we care about quality and long-term value. We don’t recommend products that won’t last in your area. That’s why James Hardie is our go-to product for fiber cement siding. We install it the right way, so your home stays protected and looks great for years.
Why We Recommend James Hardie
Comparing James Hardie siding and LP SmartSide shows clear results. James Hardie offers better protection from the weather, a more refined look, and similar pricing. If you want a smart, long-term siding choice, we’re ready to help.
Contact Hawthorn today for a free quote or expert help with your siding project.
