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Professional installers typically recommend caulking between siding boards, but it depends on the material. With Hardie board and fiber cement siding, manufacturers don't recommend adding caulk because it can trap moisture in the joints or discourage flexibility in fluctuating temperatures. Consult your local siding contractor about caulking best practices before adding any to your home’s exterior.

Clapboard is considered to be eco-friendly, as it is mostly sourced from sustainable natural resources and it has insulating properties. Clapboard is more sustainable than vinyl siding materials, which are made of plastic. Clapboard made from fiber cement can also be considered environmentally friendly. This material mimics the look of wood without the impact of deforestation.

Although dish soap will work to clean some of the grime off the aluminum siding, it may not kill mold and mildew as efficiently as a cleaning solution you can buy at a hardware store. If you have oily or greasy substances on the aluminum siding, rather than mold and mildew, dish soap should work extremely well.

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.