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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.

You should restain or refinish your home's cedar siding every three to seven years to maintain its appearance and ensure maximum protection. The precise frequency depends on several factors, including your local climate, the siding's exposure to severe weather like direct sunlight, rain, and wind, the quality of the initial stain application, the type of stain used, and the condition of the wood.

Homeowners in harsh climates with high humidity and significant direct sunlight should plan on restaining every three years, while those in milder locations can wait up to seven years. For the longest-lasting protection in particularly harsh environments, consider using an opaque stain.

If you're looking for a lower-maintenance alternative, vinyl or aluminum siding are options to consider. Although their installation cost may be higher, they don't require as much upkeep over time, which can provide more value, especially in areas with excessive rainfall or high humidity.

Vinyl can withstand many different cleaning methods, but there are two things you need to be wary of. First, particularly harsh chemicals will damage your vinyl siding and reduce its lifespan. Second, be careful about pressure washing your vinyl siding. Vinyl can resist powerful washing damage more than softer siding like wood, but high levels of pressure can still crack it. Use the lowest level of pressure for power washing vinyl, or hire a siding professional to do it.

Not wrapping a house before installing siding can lead to moisture intrusion, rot, mold, and even higher energy bills. Older houses may have siding installed without wrap underneath, so it’s a good idea to add a wrap layer when it comes time to replace old siding to prevent potential damage from water intrusion—local codes may even require it, so check with your municipal building authority.