Siding Showdown: James Hardie vs. LP SmartSide, Which Holds Up Better in DFW?

Sep 9

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This is the second post in our Siding Showdown series, where we compare two real siding options head to head instead of just listing generic pros and cons. Last time we covered vinyl versus James Hardie. This time, we are putting James Hardie fiber cement up against LP SmartSide engineered wood, two premium materials that solve the same problem in very different ways.

What Each Material Is Actually Made Of

James Hardie siding is fiber cement, made primarily from Portland cement, sand, and cellulose fibers. It behaves more like masonry than wood, which is where its strengths come from. LP SmartSide is engineered wood, made from wood strands treated through LP's SmartGuard process, which uses resins, waxes, and zinc borate to help protect the material against moisture intrusion, fungal decay, and termites. It looks and handles more like traditional wood siding, just engineered to resist the problems that make natural wood siding higher maintenance.

That difference in composition is the reason these two materials perform differently across nearly every category that matters to a DFW homeowner.

Hail and Storm Resistance

This is where the comparison gets genuinely interesting for our area. LP SmartSide's own product literature states that its siding is designed to help withstand wind gusts up to 200 miles per hour, and the manufacturer's limited warranty specifically covers hail damage up to 1.75 inches in diameter. Fiber cement products, including James Hardie, are dense and rigid, which gives them excellent resistance to moisture and fire, but that same rigidity means a hard enough hail impact can crack the material at fastener lines rather than flex around it the way engineered wood sometimes does.

Neither material is going to leave your home defenseless in a serious DFW hailstorm, both are far more durable than standard vinyl, but if hail resistance specifically is your top priority, it is worth asking your contractor directly how each product has performed on local homes after past storms, not just what the marketing brochure says.

Fire and Moisture Resistance

This category favors James Hardie clearly. Because it is cement based rather than wood based, James Hardie's siding does not rely on a protective treatment to resist fire and moisture, it is simply less vulnerable by nature. LP SmartSide's SmartGuard treatment is effective, but it is still fundamentally a treated wood product, which means the protective barrier matters more. If that barrier is compromised, through a deep scratch, an unsealed cut edge, or years of wear, the underlying wood becomes more vulnerable than fiber cement would be in the same situation.

Warranty and Long Term Value

Both manufacturers back their products with strong warranties, but the structure is different. James Hardie backs its siding with a 30 year, non prorated limited warranty. LP SmartSide's warranty, per LP's own warranty documentation, is a 50 year prorated limited warranty, meaning the coverage amount decreases over time rather than staying at full value for the full term. Neither structure is inherently better, but it is worth understanding the difference before you compare warranty length on paper.

On installed cost, LP SmartSide is typically less expensive than James Hardie fiber cement, since it is lighter and generally faster to install, while Hardie's added weight and cutting requirements tend to push labor costs higher.

Which One Fits Your Home?

If fire resistance and long term moisture protection are your top priorities, particularly for a home with a lot of direct weather exposure, James Hardie is the stronger choice. If you want the look and warmth of natural wood siding with meaningfully better durability than untreated wood, and hail resistance is a specific concern given our storm season, LP SmartSide is worth serious consideration.

Curious how either of these holds up against the damage we see most often in North Texas? Our post on hail and storm damage on siding covers what to look for after a storm regardless of which material you choose. Ready to talk through which option fits your home? Visit our siding services page or contact us for a free inspection and consultation.