- 1). Clean the siding on the entire house to remove grease, debris and dust that have accumulated over time. Rinse the siding thoroughly with a bucket of water and scrub it down with rags and dish soap. Use a ladder if necessary to reach the entire area. Dry the siding with rags and then allow it to air dry.
- 2). Sand down the siding with 120-grit sandpaper to smooth out the aluminum. Rub in a circular motion, making sure to sand the entire surface until it is smooth. Blow off bits and pieces of debris from the sandpaper with an air blower and rinse down the siding with water again. Allow it to air dry.
- 3). Tape window frames, trim, outdoor lights and other fixtures to protect them during painting.
- 4). Prime the siding with a long-handled brush. Spread the primer over the siding until it is completely covered. Clean the brush and wait 45 minutes for the primer to dry.
- 5). Brush stain onto the aluminum siding. Cover the entire area with stain and allow it to dry. Apply a second coat of stain to the siding to give it a complete finish. Allow two hours for the siding to dry.