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Some homeowners have luck using pressure washers, but this only works for old or weaker concrete sealants and with very powerful pressure washers. You’ll get better results by pressure washing water-based sealants. However, it’s worth trying on any sealant if you’re hoping for the least toxic, least expensive, and most DIY-friendly option. To try this method, rent or buy the most powerful pressure washer you can find and take several passes at the concrete, completely pressure washing the entire area. You may need to repeat the process multiple times to see results.

The best and fastest way to remove paint from a deck often involves combining a chemical stripper with a pressure washer. Gel-based paint strippers are highly recommended because their thick consistency makes them less messy and easier to apply than liquid strippers. After applying the stripper to loosen the paint, you can use a pressure washer to efficiently wash away the residue. When using a pressure washer for this task, it's important to use a low pressure (under 1000 PSI) to avoid forcing too much moisture into the wood, which could lead to mildew or rot.

The safest way to remove lead-based paint is by letting a professional take over. For most people, lead paint removal costs an average of $3,400. You should never attempt to dry sand old lead-based paint surfaces by hand. Most professionals use a paint stripper to do the job followed by wet scraping, but if you don’t want to remove lead paint, another option is to paint over it. Only consider this option if the old lead paint finish isn’t flaking or cracked.

To fix bubbling paint, scrape away any loose or blistered areas using a putty knife. Lightly sand the surface to smooth out rough edges and create a level finish. Clean the area thoroughly to remove dust, dirt, and any residue. Once the surface is clean and dry, apply a quality primer suited to the material you're painting. Finally, repaint the area, making sure to work in proper temperature and humidity conditions to prevent new bubbles from forming.