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Steel and aluminum are two types of metal siding that are commonly used for residential and commercial buildings, but the materials have specific differences. Typically, steel is heavier and sturdier, fending off scratches and dents, while aluminum is lightweight and more prone to damage. Cost is another differentiating factor, as steel is more expensive than aluminum siding cost.

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.

This is a tricky answer because how fast you work, how large your team is, and what type of siding you install will all determine your total time. One person placing bricks around an entire house can take weeks, but a team of 10 could complete the job in just a few days. Installing siding is a job that’s best done by a pro, as they are experienced and will perform solid work. A rough guideline for DIYers is to budget 15 minutes per square foot of siding.

To clean painted aluminum siding, use a mixture of mild detergent and water applied with a soft brush or sponge. Rinse thoroughly with a garden hose to remove soap residue. For stubborn stains, cleaning aluminum siding with a power washer on a low-pressure setting can be effective. But avoid using high pressure, which could damage the paint.