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Similar to other types of wood siding consisting of natural materials, cedar siding should last 20 to 40 years. However, the lifespan for any wood siding, including cedar, can be far shorter without the proper repair and maintenance work. Don’t put off making repairs, or problems could worsen quickly. While you can repair minor holes and cracks in the siding shakes, rot and warping requires replacing the boards. 

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.

Vinyl siding will fade slowly over time but will likely be most noticeable starting 10–15 years after installation. This timeline varies based on factors such as the climate where you live. In areas with more extreme hot or cold conditions, vinyl is likely to fade more quickly.

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.