Tampa Siding A Straight Answer to a Question We Get Often
Homeowners in Tampa ask us this a lot: "Why don't you install LP SmartSide? It's cheaper than James Hardie and we've seen it on other houses in the neighborhood." It's a fair question, and it deserves a straight answer instead of a sales pitch. LP SmartSide is not a bad product. It has a real place in the siding market, and plenty of licensed, competent contractors install it well. We just don't, and we think you're better served knowing exactly why before you make a decision on your own home.
This page isn't about tearing down a competitor's product line. It's about explaining the engineering trade-offs of engineered wood siding in a Gulf Coast climate, and why our company made a deliberate choice to install only James Hardie fiber cement across every job we take in Hillsborough County.
What LP SmartSide Actually Is
LP SmartSide is an engineered wood product. The core is strand board — wood fibers bonded together with resin under heat and pressure, similar in concept to OSB used in roof and wall sheathing, but manufactured and treated specifically for exterior use. It's coated with a resin-saturated overlay and factory primer, then usually field-painted after installation. It comes in lap siding, panel siding, and trim profiles, and it's noticeably lighter and easier to cut than fiber cement, which is one reason installation labor tends to run faster and cheaper.
LP has improved this product significantly over the decades since the original OSB-based "hardboard" siding products of the 1980s and 90s ran into well-documented moisture problems industry-wide. Modern LP SmartSide carries a manufacturer warranty and zinc borate treatment intended to resist fungal decay. It is a legitimately different, better-engineered product than its predecessors.
Where It's a Reasonable Choice
- Drier, more moderate climates with less sustained humidity
- Budget-conscious projects where first cost outweighs long-term maintenance planning
- Homeowners committed to a strict repainting and caulking maintenance schedule
- Applications where the lighter weight simplifies structural considerations
Why It's a Harder Sell on the Gulf Coast
Our reservations about engineered wood siding aren't about the factory product in a lab. They're about what happens to a wood-based product over 15-20 years of Tampa Bay weather. Hillsborough County sits in a subtropical climate with a few characteristics that are genuinely tough on any wood-derived exterior product.
Sustained Humidity and Wind-Driven Rain
Tampa's rainy season brings frequent, heavy, often wind-driven rain, and our humidity rarely gives a building envelope much of a chance to fully dry out between events. Any wood-based siding product depends on its factory coating and field-applied paint staying fully intact — no cracks, no chips, no gaps at seams or fastener heads — to keep moisture out of the substrate. A fiber cement product doesn't have that same vulnerability, because the core material itself isn't organic and doesn't swell or rot if water reaches it.
UV Exposure Year-Round
Central Florida gets intense, close-to-vertical sun for most of the year. UV breaks down paint film and caulk faster here than in northern climates, which shortens the interval between repaints on any wood-based siding. That's a maintenance cost and a maintenance discipline that falls entirely on the homeowner, year after year, for as long as they own the house.
Salt Air in Coastal and Near-Coastal Neighborhoods
A large share of our Tampa customers live within a few miles of Tampa Bay or the Gulf. Salt-laden air accelerates the breakdown of paint films and can find its way into any small gap in a coating system faster than it would inland. Fiber cement's non-organic core simply doesn't give salt air the same foothold.
Hurricane Season and Wind-Driven Debris
Hillsborough County sits squarely in an active hurricane corridor. Siding here has to survive not just sustained wind loads but wind-driven debris impact during storms. Both LP SmartSide and James Hardie products carry wind ratings and are used in storm-prone regions, but once a wood-based panel takes an impact that breaches the coating, that breach becomes a long-term moisture entry point in a way a fiber cement panel's non-organic core resists better.
The Real Issue: Edge and Seam Sensitivity
The single biggest factor in how any engineered wood siding performs over time isn't the field of the panel — it's the cut edges, the butt joints, and the fastener penetrations. Every cut edge exposes the strand board core, and that edge has to be field-sealed correctly, every time, by every installer, on every piece, for the life of the siding. Miss one edge, leave one joint under-caulked, or let one coat of field paint wear thin at a seam, and that's the spot where water gets in.
This isn't a knock on LP as a manufacturer — their installation instructions are explicit about edge sealing for exactly this reason. It's a statement about installation risk. We install a lot of siding, on a lot of different crews' timelines, in a trade where callbacks and workmanship vary widely. We'd rather standardize on a product where a missed detail is less likely to become an expensive moisture problem five or ten years down the road, especially on a coastal Florida property where the margin for a maintenance lapse is thinner than it is elsewhere.
How James Hardie Compares
James Hardie fiber cement siding is made from cement, sand, and cellulose fibers, cured into a rigid, non-combustible board. It doesn't have an organic wood core to protect from moisture intrusion, it doesn't swell or rot, and it's not a fuel source in a wildfire or ember-exposure scenario. Hardie's HZ5 product line is specifically engineered for high-humidity, storm-prone climates like ours, which is one of the reasons we standardized on it rather than a general-purpose fiber cement line.
Hardie's ColorPlus finish is also a meaningful difference from a field-painted product. It's a factory-applied, baked-on finish with a longer color warranty than field paint typically carries, which matters in a market where UV and salt air are working against any painted surface every single day.
Side-by-Side Comparison
| Factor | LP SmartSide (Engineered Wood) | James Hardie (Fiber Cement) |
|---|---|---|
| Core material | Wood strand board with resin binder | Cement, sand, and cellulose fiber — non-organic |
| Moisture behavior | Coating-dependent; core can swell/decay if breached | Core does not rot or swell from moisture |
| Finish | Factory primer, typically field-painted | Factory-baked ColorPlus finish available |
| Repaint interval in FL climate | Shorter, due to UV and humidity stress on field paint | Longer, especially with ColorPlus finish |
| Combustibility | Wood-based, combustible core | Non-combustible |
| Edge/seam sensitivity | High — cut edges must be field-sealed correctly | Lower — non-organic core is less vulnerable at cuts |
| Typical material cost | Generally lower | Generally higher upfront |
| Weight/installation labor | Lighter, often faster to install | Heavier, more installation-sensitive but more forgiving long-term |
What This Means for Your Budget Decision
We're not going to pretend cost isn't part of this conversation. LP SmartSide typically costs less than James Hardie fiber cement, both in material and often in labor, since it's lighter and faster to cut and hang. If your budget is the deciding factor, that price gap is real and we won't tell you otherwise.
What we'd ask you to weigh against that is the total cost of ownership over 15-20 years in this specific climate: repainting cycles, caulk maintenance, and the risk profile if a coating failure goes unnoticed at a seam or fastener line during a wet Tampa summer. For a lot of homeowners planning to stay in their house long-term, the lower maintenance burden and stronger transferable warranty on Hardie make up the cost difference over time. For others, it may not, and that's a legitimate call for a homeowner to make with full information — which is exactly why we lay it out this plainly instead of just saying no.
Why We Made This Our Standard
We install one fiber cement system, done correctly, rather than offering every product on the market and hoping each crew executes the fussier ones perfectly every time. Standardizing on James Hardie lets us:
- Train installers deeply on one flashing, fastening, and joint-sealing spec instead of spreading expertise thin across several systems
- Stand behind a workmanship warranty with more confidence, because we know the material's real-world behavior in Hillsborough County conditions
- Recommend HZ5 product lines that are actually engineered for humidity and storm exposure, not general-purpose lines adapted after the fact
- Give homeowners a straight answer about long-term maintenance instead of a sales pitch built around the lowest first-cost option
What to Ask Any Siding Contractor Before You Hire
- What siding material do you install most often, and why did you standardize on it?
- What's the manufacturer's climate zone rating for this specific product line?
- How do you detail cut edges and seams during installation?
- What does the warranty cover, and is it transferable if you sell the home?
- What's the realistic repaint or recoat interval for this product in a Tampa Bay climate?
Our Bottom Line
LP SmartSide isn't a scam product and we're not claiming otherwise. It's an engineered wood siding that performs reasonably well when installed with disciplined edge-sealing and kept on a consistent repainting schedule. But we install siding for a living in a county that gets hurricanes, sustained humidity, intense UV, and salt air working against a building envelope every single year, and we've made a professional judgment that a non-organic, factory-finished fiber cement system gives our customers a better long-term outcome with less ongoing maintenance risk. That's why James Hardie is the only siding system we put on Tampa homes.
If you'd like to talk through your specific home, budget, and timeline — including an honest look at whether Hardie makes sense for your situation — we're happy to walk the property and put together a free, no-pressure estimate.