- 1). Cover outdoor electrical outlets and light fixtures with plastic bags.
- 2). Attach a soft brush to a long extension pole. You can purchase the soft brush and extension pole from a home improvement store or a recreational vehicle dealership.
- 3). Mix a solution of 1/2 cup liquid dish washing soap with 2 gallons of warm water. If your siding is especially dirty or mildewed, use an all-purpose home cleaner or a home mildew cleaner.
- 4). Fill another bucket with clean, warm water.
- 5). Dip the brush into the cleaning solution then wash the siding by starting from the bottom and washing up to the top. Even though this seems counter-intuitive, it will minimize streaking. Wash in horizontal strokes in one approximately 4-foot section of the siding at a time. As you work your way up the siding, you will have to move close to the house with your extension pole in order to reach the highest panels.
- 6). Use a ladder to get closer to the siding you want to clean for especially hard-to-reach areas, such as areas that are too high to reach even with the extension pole, or those that are obstructed by trees or window treatments. Place the ladder 2 feet out from the house, and make sure that you ask an assistant to hold the ladder for you while you climb and clean the siding that you can't reach from the ground.
- 7). Dip the brush into the clean water and rinse it out with your hands so that the brush doesn't have any of the cleaning solution on it. If you don't want to go through the trouble to rinse it out each time, then purchase a second clean brush that you can attach to the extension pole when it is time to rinse the siding.
- 8). Rinse the siding by starting at the top of the siding rather than the bottom, and work your way down the area that you just cleaned.
- 9). Repeat the washing and rinsing in 4-foot sections until you have cleaned the entire house's siding.
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