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If you’re wondering how to make wood siding last longer, including Composite T1-11, inspect it annually or quarterly to spot and repair cracks, holes, or chipped areas. You’ll also want to re-stain the wood every 3 to 5  years or repaint every 7 to 10 years for protection (note that repainting requires stripping and sanding off old paint as well). Lastly, keep up with regular cleanings using a garden hose or low-pressure power washer to help prevent grime and discoloration.

If you’re wondering how to clean clapboard siding, the approach depends on its material and condition. Siding in good shape may need only light soap and spray from the hose, while older siding often requires more thorough treatment. For serious cleaning, power washing can remove caked-on dirt, but you should consider hiring a professional to avoid causing damage in the process.

Costs vary based on home size, siding quality, labor, and any necessary repairs to underlying structures. High-grade materials and insulation options tend to influence the overall expense.

You cannot install clapboard siding on a bare, unprepared surface. Clapboard siding requires a clean, sturdy base made from plywood or similar materials, sometimes called backerboard. Then, it needs an underlayment or sheathing, a moisture membrane to help protect the exterior wall.

Note that sometimes clapboard siding is caulked as it’s installed for additional protection. We don’t suggest this: Caulking the siding can trap moisture inside the clapboards and lead to moisture damage over time. The siding needs some space to “breathe,” especially in rainy weather.