James Hardie vs LP SmartSide: A Twin Cities Contractor Comparison

You have been told two completely contradictory things by two siding contractors.

Contractor A says fiber cement (James Hardie) is the only option that actually lasts in Minnesota. The other guy is selling engineered wood, which is plywood pretending to be siding, and it will rot in 10 years.

Contractor B says engineered wood (LP SmartSide) is dramatically lighter, easier to work with, and the new generation handles freeze-thaw better than any fiber cement. Plus the LP plant is in Two Harbors, Minnesota — buy local.

Both contractors have five-star Google ratings. Both have been in business 15+ years. And both are technically right about parts of what they are saying — and wrong about parts of it.

I am Noah Bergland, co-owner of Owl Roofing in Shoreview. I install both products. Below is the honest head-to-head comparison I walk through with Twin Cities homeowners deciding between James Hardie HZ5 and LP SmartSide ExpertFinish — including the scenarios where each is actually the right answer.

TL;DR — Hardie vs LP SmartSide in one paragraph

The head-to-head comparison grid

1. Material composition — fundamentally different

Hardie HZ5 is fiber cement. Roughly 50% Portland cement, 30% sand, 8% cellulose fibers, 12% additives. The result is a dense, hard, non-combustible board that does not warp or rot.

LP SmartSide is engineered wood. Wood strands or fibers, treated with zinc borate (which resists fungi and insects) and other additives, then resin-bonded. The result is a wood-based product engineered to outperform natural wood while keeping wood handling characteristics.

The category difference matters in three real ways: weight, workability, and category-specific failure modes.

2. Cold-climate performance — both engineered, both work

Hardie HZ5 is the cold-climate-engineered version of fiber cement. Denser composition, different cellulose-fiber blend, ColorPlus finish formulated for cold-climate UV. Real-world Twin Cities installs from the early 2000s show no significant freeze-thaw failures.

LP SmartSide uses SmartGuard treatment — zinc borate plus binders that resist moisture absorption. Real-world Minnesota installs (and the LP plant is in Two Harbors, where they test their own product against -40°F winters) show similar long-term performance.

The verdict: both products are properly engineered for Minnesota. The category-difference predictions of “X will fail in 10 years” are not supported by field data.

3. Installation — where LP wins

LP SmartSide weighs roughly 1 lb/sq ft. Hardie HZ5 weighs 2.3 lbs/sq ft. That weight difference translates to faster install (10–20% labor savings), easier handling on tall walls or detached structures, and reduced strain on the underlying sheathing.

LP also cuts with standard wood-working tools. Hardie requires fiber-cement-specific shears or carbide-tipped saw blades, plus dust collection (silica dust from cutting Hardie is a real respiratory concern).

For contractors, LP is generally easier and faster to install. That sometimes shows up as $1–$2/sq ft savings on the homeowner-side quote.

4. The MN-made angle for LP SmartSide

LP SmartSide has a major manufacturing plant in Two Harbors, Minnesota — about 4 hours north of the Twin Cities. For Minnesota homeowners, the local-manufacturing story has real value: shorter shipping, jobs in the state, and a cold-climate testing environment that is literally adjacent to where the product is sold.

Hardie does not have a Minnesota plant. Their nearest is in Iowa.

This is not a performance difference — both products are equivalent in field installations — but it is a real story for homeowners who care about local manufacturing.

5. Aesthetics and architectural fit

Hardie has the established premium-home aesthetic in the Twin Cities. Edina, North Oaks, Wayzata Tudor, Colonial, and traditional homes default to Hardie because the material is what those architectures expect.

LP SmartSide reads as cleaner, slightly more modern. Better fit on farmhouse-traditional builds, cabin-aesthetic homes (Lake Minnetonka shoreline cabins), and modern construction. The deeper shadow lines on LP ExpertFinish read as architecturally crisp.

For Tudor or Colonial, choose Hardie. For modern, farmhouse, or lake-cabin, LP SmartSide is often the better aesthetic.

“High-quality work and genuine attention to detail. Noah kept us informed every step of the way and the final result speaks for itself.”

— Brian Edge, Verified Google review

6. Warranty — different structures, equivalent value

Hardie offers a 30-year non-prorated limited warranty on the substrate, plus 15-year ColorPlus finish warranty.

LP SmartSide offers a 50-year prorated limited warranty on the substrate, plus 16-year ExpertFinish warranty.

The Hardie warranty is shorter but non-prorated. The LP warranty is longer but prorated (coverage decreases over time). In practice, both warranties cover similar real-world failure scenarios with similar customer-claim outcomes.

The decision framework

What Owl Roofing Customers Actually Say

Real, verified Google reviews from real customers Owl Roofing maintains a 5.0 Google rating with 30+ five-star reviews.

Noah is the real deal. After our insurance denied our roof claim and the first roofer walked away, Noah showed up the next day and said he thought he could get us a new roof. He delivered. He got us a roof covered by insurance after it had already been declined. We came up with a nickname for him: “The Roof Whisperer.”

— Tyler Moberg, verified Google review

I am an Independent Insurance Agency owner and have worked with Noah on several roof projects. The homeowners have been extremely satisfied with the quality of work and craftsmanship Noah and his crews have provided. From filing the claim to replacing the roof and cleaning up the job site, Noah and his crew are the best!

— Fred Zappa, Independent Insurance Agency Owner

We used Owl Roofing for a repair on our roof in Brooklyn Park, and I was blown away by how good they were. Every member of the team communicated well about the process. Their price transparency was super helpful. They got the work done very fast, and the team was professional and very kind.

— Matt Brown, Brooklyn Park (verified Google review)

Noah and his team are outstanding! His clear communication, professionalism, and workmanship are top-notch. I recommend Owl Roofing to all my clients, friends, and family.

— Christine Westlund, verified Google review

It didn’t feel like dealing with a big company — it felt like working with people who actually care about the homes and community in the North Oaks and Shoreview area. Great people, great communication, and really solid work.

— Cody Warren, verified Google review

Frequently asked questions

Is James Hardie better than LP SmartSide for Minnesota homes?

Neither is universally better. Hardie HZ5 is denser, fire-rated, and the established premium choice for Tudor and Colonial homes. LP SmartSide is lighter, Minnesota-made, faster to install, and slightly cheaper — better fit on farmhouse, modern, or cabin architectures. Both are excellent products in 2026.

What is the cost difference between Hardie and LP SmartSide?

LP SmartSide typically runs $1–$2 per square foot less than Hardie installed in the Twin Cities. On a 2,400 sq ft home, that is $2,400–$5,000 in savings.

Will LP SmartSide rot or warp in Minnesota winters?

Real-world LP SmartSide installs in Minnesota — including in Two Harbors where the product is manufactured and tested — show no significant rot or warping at 15+ years. The SmartGuard treatment resists moisture and fungal degradation.

Does James Hardie or LP SmartSide last longer?

Both manufacturers warranty their products for 30+ years. Real-world performance in the Twin Cities is similar — both products often reach 40–50 years when properly installed and maintained.

Is LP SmartSide really made in Minnesota?

Yes. LP operates a major plant in Two Harbors, Minnesota, about 4 hours north of the Twin Cities. The plant manufactures SmartSide products distributed across the Upper Midwest.

Which is faster to install?

LP SmartSide. The lighter weight and easier cutting (standard wood-working tools versus fiber-cement-specific tools required for Hardie) means LP typically installs 10–20% faster.

Where to start

To request a free siding estimate from Owl Roofing, fill out a short form. We are based in Shoreview, BBB Accredited, family-owned, and we install both Hardie and LP SmartSide across the Twin Cities — including North Oaks, Wayzata, Edina, Minnetonka.

For more, see James Hardie siding cost guide and $100K+ Twin Cities reroof guide. To see all the brands we install, visit brands and materials.