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Before applying paint to exterior surfaces, filling any cracks or gaps with caulk is essential. Sealing them with a combination of caulk and paint prevents moisture from damaging the paint or decaying the underlying material. You want to ensure the caulk you purchase can be painted over or that you opt for a caulk the same color as the paint.

You can put new siding over clapboards, but it’s not recommended. Some sidings, like vinyl siding, can go over clapboards with sheathing like a foam layer in between. However, it’s best to remove clapboard siding if you plan on replacing it with new siding. Burying wood clapboards underneath new siding can create risks of rot and mold, or hidden insect damage. It can also create warping issues over time. Removing clapboards allows you to properly install a new sheathing, as well as clean up the exterior wall and look for any signs of damage.

You should plan to stain or refinish your home's cedar siding every three to seven years to maintain its appearance and provide maximum protection, though some estimates suggest a range of four to six years. The exact frequency depends on several factors, including your local climate, exposure to severe weather like direct sunlight, rain, and wind, the quality of the initial stain application, the type of stain used, and the overall condition and quality of the wood.

For homes in harsh climates with high humidity and significant sun exposure, you should plan on staining as often as every three years, while those in milder locations may only need to do so every seven years. For the longest-lasting protection in particularly harsh climates, consider using an opaque stain.

If you are looking for a lower-maintenance alternative, you might consider vinyl or aluminum siding. While the initial installation cost can be higher, they do not require as much upkeep and can offer more value over time, especially in areas with excessive rainfall or high humidity.

When moisture infiltrates your siding, it can result in deterioration and decay of the sheathing, cause structural damage to your foundation, and provides an ideal breeding ground for mold. Mold growth can lead to various health-related problems, such as itchy eyes, sneezing, allergies, and asthma. Mold and dampness commonly attract a wide range of insects, so if your siding has taken any kind of water damage, it could invite some unwelcome guests.