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The lifespan of vertical siding depends on the type of material used and whether it’s properly maintained. For instance, vinyl siding can last between 20 and 30 years, while fiber cement siding can last up to 50 years. Remember that the type you choose will depend on how much maintenance it will require to prolong its longevity. 

The recommended PSI (pounds per square inch) for cleaning vinyl siding can vary, so it's best to consult the manufacturer's guidelines. Generally, vinyl siding can handle high pressure, from 2,500 to 3,500 PSI. For comparison, more delicate materials like wood and aluminum siding should not face more than 1,500 PSI. To safely disperse the pressure on vinyl, use a tip with a wider spray span, such as a green (25-degree) or yellow (15-degree) nozzle. For routine cleaning of light dirt, a garden hose with a spray nozzle may be sufficient. Always exercise caution to avoid using excessive pressure that could damage the siding.

Fiber cement siding is the best siding to install over stucco because it offers many of the same benefits for homes where stucco is common, including fire resistance, insect resistance, and good insulation. Fiber cement siding is also rigid, so it won’t warp over time like vinyl siding might if installed over furring strips.

There should be small gaps between your roof and the walls of your home, and other buildings. These small gaps let building materials shift, expand, and contract with weather and other outside forces, and they prevent moisture from wicking down walls from roofing and gutter systems. Without these strategic gaps, your home’s exterior and its finishes can sustain water damage, decay, peel, delaminate, and crack. However, there is a fine line between a smart gap and a problematic gap—all  gaps should be small, intentional, and covered or filled in with foam insulation to prevent pests from using them as access points.