Hardie Board siding (fiber cement) typically lasts 40–50 years with minimal upkeep and excels in harsh Midwest climates. LP SmartSide (engineered wood) costs less upfront and offers a warm, wood-like look, but requires more frequent maintenance. For Iowa homeowners, Hardie Board generally provides stronger long-term value.
Replacing your home’s siding is one of the most significant exterior investments you can make. Pick the right material, and your home stays protected for decades. Pick the wrong one, and you’re dealing with warped panels, moisture damage, and repainting bills far sooner than you planned.
Two materials come up most often in this conversation: Hardie Board (James Hardie fiber cement siding) and LP SmartSide (engineered wood siding). Both are quality products. Both look great on the right home. But they perform very differently, especially here in Nebraska and Iowa, where the weather doesn’t pull any punches.
At Home Pride Roofing, we’ve been installing siding across Iowa since 1985. This guide breaks down exactly how these two materials compare so you can make a confident, informed decision.
Key Takeaways
- Hardie Board (fiber cement) lasts 40–50 years and holds up exceptionally well against Midwest freeze-thaw cycles, hail, and humidity.
- LP SmartSide costs less upfront ($4–$7 per sq. ft. installed vs. $6–$12 for Hardie Board) but requires repainting every 5–10 years.
- Hardie Board carries a 30-year non-prorated warranty; LP SmartSide offers a 50-year limited warranty that becomes prorated after the first five years.
- Iowa’s climate, marked by temperature swings, hailstorms, and humid summers, generally favors fiber cement’s structural stability.
- Professional installation is critical for both materials. Improper installation can void warranties and shorten lifespan significantly.
What Is Hardie Board Siding?
James Hardie fiber cement siding is made from a blend of Portland cement, silica sand, cellulose fibers, and water. That inorganic composition is what sets it apart from wood-based products. Because there’s no organic core to absorb moisture or attract insects, Hardie Board resists rot, termites, and warping in ways that engineered wood simply cannot match.
It’s also non-combustible, meaning it won’t ignite like wood siding. That makes it a strong choice if you’re concerned about fire risk, whether from a neighbor’s fire pit or a wildfire event.
Hardie Board comes in a wide variety of profiles, including lap siding (HardiePlank), board and batten, shingles, and vertical panels. Many styles are available with ColorPlus® Technology, a baked-on factory finish that resists fading, peeling, and cracking for up to 15 years between repaints. The 30-year non-prorated warranty means your coverage stays consistent throughout the full warranty period, not just the first few years.
What Is LP SmartSide?
LP SmartSide is an engineered wood product made from wood strands, resins, waxes, and a zinc borate treatment. LP’s proprietary SmartGuard® process pressure-treats the material from the inside out, giving it improved resistance to moisture, fungal decay, and termites compared to raw wood. It’s also Forest Stewardship Council (FSC) certified, making it the more eco-friendly choice of the two.
The biggest appeal of LP SmartSide is its appearance. It closely mimics the warmth and texture of natural wood grain, which can be ideal for craftsman, colonial, or historic-style homes. It’s also lighter and easier to work with on the job site, which can sometimes translate to lower installation labor costs.
LP SmartSide comes with a 50-year limited warranty, which sounds impressive until you read the fine print. The warranty provides 100% labor and material coverage for the first five years, then becomes prorated after that. Hardie Board’s 30-year non-prorated warranty actually offers more consistent long-term protection.
Hardie Board Siding vs. LP SmartSide: Head-to-Head Comparison
When choosing the right siding for your home, it’s essential to weigh the pros and cons of each option to make an informed decision. Below, we compare Hardie Board and LP SmartSide across key factors such as durability, maintenance, cost, and aesthetic appeal to help you determine which siding best suits your needs.
Which siding material is more durable and longer lasting?
Hardie Board wins here. With a lifespan of 40–50 years when properly installed and maintained, fiber cement outlasts most other siding materials on the market. It maintains its structural form through decades of temperature changes, moisture exposure, and impact events like hailstorms.
LP SmartSide typically lasts 20–30 years. The zinc borate treatment provides real protection against moisture and insects, but the wood-based core is still vulnerable. If protective coatings crack, peel, or fail, water can penetrate the siding and cause swelling, rot, or mold. That risk is much lower with Hardie Board’s inorganic composition.
Which siding requires less maintenance over time?
Again, Hardie Board comes out ahead. The ColorPlus® factory finish typically holds up 15–20 years before repainting is needed. The siding itself doesn’t expand or contract much with temperature changes, so caulk and seams stay intact longer.
LP SmartSide requires repainting every 5–10 years in most climates, and every 7–12 years in wetter or more humid regions. Its wood-based structure naturally expands and contracts with moisture and temperature shifts, which puts repeated stress on paint and caulk. That means more frequent inspections and touch-ups to keep the siding performing as intended.
How do the two siding materials compare on cost?
LP SmartSide generally costs $4–$7 per square foot installed. Hardie Board typically runs $6–$12 per square foot installed in most markets, and in the Des Moines, Iowa region specifically, full installations on an average 2,000 sq. ft. home commonly range from $20,000–$30,000, according to local fiber cement contractors. Engineered wood installed in the same market lands in the $9–$16 per square foot range when accounting for materials and labor.
The upfront cost difference is real, but so is the long-term savings on repainting, repairs, and earlier replacement that LP SmartSide tends to require. Hardie Board’s lower maintenance schedule helps close that cost gap over time.
Which siding material offers better aesthetics?
LP SmartSide offers a warmer, more organic look. The pronounced wood grain texture works especially well on traditional and craftsman-style homes. If matching a classic aesthetic is the priority, LP SmartSide is hard to beat visually.
Hardie Board provides a cleaner, more consistent profile. Each board is manufactured to precise specifications, and the ColorPlus® finish options cover a wide range of styles, from natural tones to bold contemporary colors. It’s also available in multiple profiles, making it flexible enough for both classic and modern home designs.
Why Iowa’s Climate Matters for Your Siding Choice
Midwest weather is a real stress test for exterior materials. Iowa homeowners deal with:
- Significant freeze-thaw cycles each winter that force materials to expand and contract repeatedly
- Hailstorms, which are common across the region and can dent or crack lighter siding materials
- Hot, humid summers that accelerate moisture damage in wood-based products
- Strong wind events that test panel integrity and installation quality
Hardie Board handles these conditions better than LP SmartSide. Fiber cement’s inorganic composition stays dimensionally stable through freeze-thaw cycles, meaning it doesn’t develop the micro-fractures in paint and caulk that wood-based siding tends to develop over multiple winters. Hardie Board also holds up better under hail impact. Because it’s denser and more rigid than engineered wood, it resists denting and surface damage that LP SmartSide can experience in a significant storm.
LP SmartSide can perform well in drier climates with minimal seasonal moisture variation. In Iowa, though, the combination of humid summers, icy winters, and regular hail events puts engineered wood siding under more strain than it was designed to handle long-term.
Why Professional Installation Matters
Neither Hardie Board nor LP SmartSide will deliver its full lifespan potential if it’s not installed correctly. Fiber cement, in particular, is heavier and requires specialized tools and training to cut and fasten properly. Improper installation can lead to water infiltration at seams, warped panels, and warranty voidance.
We hold VSI Certification for siding installation and have been installing exterior products across Nebraska and Iowa for over 40 years. Our crews follow exact manufacturer specifications on every project, which means your siding not only looks great from day one, but performs reliably for years to come. As a locally owned business, we also understand the specific climate challenges your home faces, and we install accordingly.
If you’re in the Des Moines area, our Johnston office serves homeowners across central Iowa, and we’re happy to walk you through which siding option makes the most sense for your home.
Frequently Asked Questions
Q: How long does each siding option typically last?
A: Hardie Board fiber cement siding typically lasts 40–50 years with proper installation and basic maintenance. LP SmartSide has an average lifespan of 20–30 years, though longevity depends heavily on climate conditions and how consistently the protective coatings are maintained.
Q: Which siding requires more maintenance over time?
A: LP SmartSide requires repainting every 5–10 years in most climates, and annual inspections to check for cracks or failing caulk. Hardie Board’s ColorPlus® finish holds up 15–20 years between repaints, making it the lower-maintenance option by a wide margin over its lifespan.
Q: Is one siding material better suited for Nebraska and Iowa weather?
A: For the Midwest climate, Hardie Board generally performs better. Nebraska and Iowa experience freeze-thaw cycles, hailstorms, and humid summers, all of which put additional strain on wood-based siding products. Fiber cement stays dimensionally stable through temperature swings and resists hail impact more effectively.
Q: Can I mix Hardie Board and LP SmartSide on the same home?
A: Technically, it’s possible to use different siding materials on different sections of a home. However, we generally don’t recommend mixing fiber cement and engineered wood on the same exterior. The two materials respond differently to temperature and moisture, which can create inconsistent performance and make future repairs or color matching more difficult.
Q: What’s the typical cost difference between the two siding options?
A: LP SmartSide typically costs $4–$7 per square foot installed in most markets, while Hardie Board runs $6–$12 per square foot. In the Nebraska and Iowa region, full Hardie Board installations on an average home commonly range from $20,000–$30,000. LP SmartSide has a lower upfront cost, but higher long-term maintenance expenses can close that gap over the life of the siding.
The Bottom Line on Hardie Board Siding vs. LP SmartSide
Both materials are legitimate options with real strengths. LP SmartSide is a solid choice for budget-conscious projects in drier climates, and its wood-like aesthetic is genuinely appealing. Hardie Board costs more upfront, but its 40–50 year lifespan, non-combustible composition, and superior performance in harsh Midwest weather make it the stronger long-term investment for most Nebraska and Iowa homeowners.
The best way to know which option is right for your specific home is to talk with someone who knows your local climate and has installed both materials. We offer free inspections and honest guidance with no pressure. Contact Home Pride Roofing today to schedule yours.
