Clearwater Siding What LP SmartSide Actually Is
LP SmartSide is an engineered wood siding product. The core is strand-based wood, similar in concept to OSB, that's saturated with resin and treated with a zinc-borate process (LP calls it SmartGuard) to resist fungal decay and termites, then finished with a primed or pre-finished surface. It's a legitimate, widely used product with a real manufacturer warranty, and plenty of houses across the country wear it well. We're not here to tell you it's junk, because it isn't. We simply don't install it on Clearwater homes, and homeowners deserve to know why before they commit to it.
The Core Issue: It's Still Wood at Its Heart
Fiber cement and engineered wood siding solve different problems in different ways. LP SmartSide's strand-wood core is treated to resist moisture and pests, but treatment slows a wood product's vulnerabilities — it doesn't eliminate them. Any point where the factory finish is breached (a cut edge, a nail hole, a scuff from a ladder or a lawn crew's weed trimmer) exposes raw wood fiber to the air. In a climate like ours, that exposed edge is doing a lot more work than it would in a drier part of the country.
Why Pinellas County's Climate Raises the Stakes
Clearwater sits on a peninsula between Tampa Bay and the Gulf, which means the siding on a typical home here deals with several stresses stacked on top of each other: near-constant humidity, wind-driven rain during summer storms and the occasional hurricane, intense UV exposure almost every day of the year, and a steady drift of salt air off the water. Each of those is manageable on its own. Together, over years, they're a demanding test for any exterior material, and they're especially unforgiving of any product where the manufacturer's installation instructions have to be followed to the letter to keep moisture out of a wood-based core.
LP SmartSide's own installation guidance is specific about this: cut edges and field-cut ends need to be primed before installation, gaps and joints need to be caulked and maintained, and clearance from the ground, roofline, and other flashing points has to be exact. That's not a knock on the product — it's simply the reality of putting an engineered wood product in a coastal environment. The margin for a missed caulk joint or an under-primed cut is smaller here than it would be in a colder, drier region, and the consequence of missing that margin — edge swelling, delamination, or fungal staining at seams — shows up as a maintenance problem, not just a cosmetic one.
Maintenance Is the Real Cost
Every siding product needs some upkeep, and we tell customers that no matter what material they choose. But the maintenance schedule for engineered wood siding in this climate is more demanding than most homeowners expect going in. Caulked joints need regular inspection and re-sealing. Cut ends and any field modifications need to stay properly sealed for the life of the siding. Paint or the factory finish needs monitoring for wear, especially on south- and west-facing walls that take the brunt of Florida's UV. Skip a cycle of that maintenance and the product doesn't fail overnight — it just starts losing the margin that keeps moisture out of the core, and by the time swelling or soft spots show up at a seam, the fix usually means replacing sections rather than just recaulking.
We build our business around installing a siding system once and having it hold up with minimal intervention for decades, in a climate that doesn't give products much room for error. That's a standard we can meet with fiber cement. It's a harder standard to meet with a wood-based product, no matter how well-treated the core is.
Why We Install James Hardie Instead
We install James Hardie fiber cement exclusively, and the reasons come down to what the material is made of and how it's engineered for regions like ours. Fiber cement is cement, sand, and cellulose fiber — there's no wood core to swell, delaminate, or feed fungal growth, and it's non-combustible, which matters on a peninsula where wildfire risk and insurance considerations both come into play. Hardie's ColorPlus finish is baked on at the factory under controlled conditions, which holds up to UV and salt air significantly better than field-applied paint, and it's backed by a real, transferable warranty on both the substrate and the finish.
Just as important, Hardie engineers specific product lines — their HZ5 designation — for exactly the humidity and moisture exposure we deal with in Pinellas County. That's not marketing language; it reflects real differences in how the board is formulated for high-moisture climates versus drier ones. When we install it to Hardie's specifications, with the correct fasteners, clearances, and flashing details for our climate zone, we're putting a product on the house that was built for this environment from the ground up, not a product that has to be carefully protected from it.
Our Bottom Line
LP SmartSide isn't a bad product — it's just not the product we're willing to stake our installations on in a climate this tough on exterior materials. We'd rather stand behind one system we know performs here than offer several and let a customer find out the hard way which one was the wrong fit for a Gulf Coast home. If you're weighing your options for a siding replacement or new build in Clearwater, we're happy to walk through the differences in person and give you a straight answer about what will actually hold up on your house.
Reach out anytime for a free, no-pressure estimate — we'll take a look at your home and talk through what makes sense for your budget and your property, no obligation attached.