When you first painted that deck it looked great. Now, years after the job, the paint is weathered and peeling. Perhaps you are contemplating replacing the deck. Remove all the furniture from your deck. Use a scraper or an iron-bristle brush to scrape away peeling paint on the deck. Apply the paint stripper with a paintbrush to a byfoot section of the deck to soften the remaining paint. Set the power washer to a low pressure of to pounds per square inch (psi).