Get matched with top pressure washers in Sandy, UT

Yes, it is highly recommended to wash a house's exterior before painting to ensure the best results. Cleaning the surface removes dirt, dust, grime, mold, mildew, and old paint, which allows the new paint to adhere properly and results in a smoother, long-lasting finish. Failing to clean can lead to poor adhesion, peeling, and an uneven appearance. Pressure washing is an efficient method for this, but be cautious not to use excessive pressure that could damage siding or wood. For materials like vinyl or stucco, soft washing might be a better option. After washing, allow sufficient drying time, such as three to four days, before painting to prevent trapping moisture, which can cause blistering or peeling.

Your deck may look or feel fuzzy after pressure washing because the high-pressure spray tears some wood fibers as it removes the outer layer of dead and discolored wood. This fuzzy effect is a normal part of the pressure-washing process and will go away on its own in a few weeks. You can opt to spot-sand your deck if you’d like to remove it more quickly.

It’s not necessary, but you can absolutely use soap or detergent when pressure washing your house. Washing with a mixture of soap and water will ensure your siding is spotless when you’re finished. However, in many cases it is not necessary to use soap and you can still achieve a powerful result without any product. 

Depending on the amount of experience you have with power washing or pressure washing, hiring a professional is likely a better option. Using a pressure washer requires a bit of know-how to avoid damaging siding, trim, roofing shingles, and even the seals on your windows. Holding the pressure washer too close to the material you’re cleaning can cause damage to the surface. You can wash your home’s exteriors with a garden hose, but high-pressure cleaning should be done by professionals.