Tampa Siding Two Fiber Cement Products, One Choice We Made
If you've priced out siding in the Tampa Bay area, you've probably seen both James Hardie and Cemplank quoted as "fiber cement" — and on paper, that can make them look interchangeable. They're not identical products, and after years of installing fiber cement siding across Hillsborough County, we made a deliberate decision to install only James Hardie. This page explains why, without trashing the alternative.
What Cemplank Gets Right
Cemplank, manufactured by Nichiha, is a genuine fiber cement product — a blend of cement, sand, and cellulose fibers pressed and cured, the same basic category as Hardie board. That means it shares fiber cement's core advantages over vinyl or wood: it doesn't burn, it resists impact and rot far better than wood lap siding, and it holds paint or factory finish longer than most alternatives. It's also typically sold at a lower price point than Hardie, which is why it shows up in a lot of competitive bids. For a budget-driven project, that price gap is real and we're not going to pretend otherwise.
Where the Trade-Offs Start
Our concerns with Cemplank aren't about whether it's "real" fiber cement — it is. They're about the practical differences that show up over a 20- or 30-year ownership period, especially on the Gulf Coast:
- Regional engineering. James Hardie manufactures climate-specific product lines — HZ5 for Florida's High Zone Impact requirements — engineered for our humidity, hurricane wind loads, and moisture cycling. Cemplank's product line is not built around that same tiered, region-specific formulation approach.
- Factory finish depth. Hardie's ColorPlus finish is a baked-on, multi-coat factory system with a documented long-term warranty against fading and peeling. Cemplank's factory finishes and warranty structure are less established in our market, and field touch-up performance under intense Florida UV is something we've had to weigh carefully.
- Supply and product consistency. Hardie's distribution and manufacturing footprint in Florida is deep — matching boards, trim, and soffit from the same system years after the original install is straightforward. With less common regional products, sourcing an exact match for a repair or addition down the road can get harder.
- Installer familiarity. Hardie publishes detailed, climate-specific installation and fastening specs (including HZ10 zone requirements) and backs installer training around them. That consistency matters more than people expect — fiber cement siding fails at the seams and fasteners, not the panel itself, when it's installed off-spec.
Why This Matters More in Tampa Than Elsewhere
Hillsborough County homes take a specific kind of beating: hurricane-force wind gusts that test every fastener and joint, wind-driven rain that finds any gap in flashing or caulking, and salt air drifting in off the Bay that accelerates corrosion on anything not rated for it. Add in nearly year-round UV exposure that breaks down inferior finishes faster than it would in a milder climate, and the margin for error on product selection and installation shrinks considerably. We'd rather install one product we know cold — its fastening patterns, its expansion behavior, its warranty terms — than juggle multiple fiber cement brands and split our crews' expertise across them.
| Factor | Cemplank | James Hardie |
|---|---|---|
| Base material | Genuine fiber cement | Genuine fiber cement |
| Florida-specific engineering | General product line | HZ5 zone-engineered |
| Factory finish warranty | Varies by product | Long-term ColorPlus warranty |
| Regional parts/match availability | Limited in our market | Widely stocked |
| Typical upfront cost | Lower | Moderate to higher |
Why We Standardized on Hardie
Our decision comes down to what we're willing to put our name behind. James Hardie's HZ5 product line was engineered with hot, humid, storm-prone climates like ours in mind. The ColorPlus factory finish holds its color and integrity under sun exposure that would dull a lesser coating within a few seasons. The transferable warranty gives homeowners real protection if they sell before the siding's service life is up — a meaningful detail in a market like Tampa where homes change hands often. And because we install Hardie exclusively, our crews aren't switching fastening specs and trim details from job to job; they know this system inside and out, which is where fiber cement installations actually succeed or fail.
None of this means Cemplank is a bad product in the abstract — it's a legitimate fiber cement option, and other contractors install it well. It means that after weighing the climate demands of Hillsborough County against the differences in regional engineering, finish warranty, and long-term parts availability, we chose to put our reputation behind one system rather than several.
Talk to Us Before You Decide
If you're comparing siding quotes and seeing different fiber cement brands, we're happy to walk through what's actually different between them on your specific home. Reach out for a free, no-pressure estimate — we'll look at your existing siding, talk through what Hardie's HZ5 line would mean for your property, and give you a straight answer with no obligation.