How to Remove Old Paint From a Lap Siding House

• 1). Use a hand-held paint scraper to remove any paint above 12 feet or so on house, working from a ladder and scraping lengthwise along the siding. Do the entire upper portion of the house.
  
  
• 2). Attach your garden hose to the pressure washer. Set the nozzle in place as directed by the instructions.
  
  
• 3). Standing on the ground, point the wand of your pressure washer at the siding, at the level where you stopped scraping, about 12 feet up. Hold the wand about a foot from the side, and start the stream.
  
  
• 4). Move the nozzle along the length of the siding, adjusting the distance from the nozzle to the siding based on how easily the old paint is coming off. Work the nozzle in a slightly angled forward pushing motion, as you would a putty scraper. Stop before you get to any light fixtures or power lines and scrape around those by hand.
  
  
• 5). Let the siding thoroughly dry for several days before repainting.