Tips & Advice
Can residential roofs be pressure washed?
Residential roofs can be pressure washed, but it is a very sensitive job because too much pressure can damage the roof. It’s best to hire a professional with a good local reputation for this task.
Can pressure washing remove graffiti?
Pressure washing can remove graffiti, but most experts agree that the machine needs to be capable of 2,000 PSI and have a hot-water setting. (This is not the standard for all surfaces--some say that low pressure of below 800 PSI is safer for brick.) The removal method varies depending on what material was used to create the graffiti, and usually involves some type of solvent. This could be an everyday household cleaning supply like baking soda and water, or it could be something specialized such as a biodegradable emulsifier.
How often should a house be pressure washed?
Pressure wash your house once a year if it is located in a spot that gets a lot of precipitation and doesn’t get fully dry very often. If it is in an area with a lot of dust and dirt,, or it’s in a warm, humid area or a high-pollen area, some experts recommend power washing twice a year. For homes in dryer climates, it is only recommended to power wash every two years. People who own a power washer will often wash certain spots more frequently, like a stamped-cement driveway or garage door.
What chemicals are used in pressure washing?
Detergent chemicals are commonly used in pressure washing. These include citric acid (for concrete driveways and stain removal), sodium Hydroxide (caustic), sodium Hypochlorite (disinfectant), ammonia, and oxalic acid. Two of these chemicals--sodium Hypochlorite and sodium Hydroxide--combine to make bleach, which is also commonly mixed with water, or used on its own, to make a cleaning/disinfectant solution. Using chemicals is required for pressure washing. There are soaps made of natural materials that are considered more eco-friendly.
What is the right PSI for a pressure washer?
The desirable PSI (pounds per square inch) for a pressure washer used for residential jobs is between 1,300 to 2,400. The pressure washers with lower PSI have electric motor power, and the ones with above 2,000 PSI have gas motors, but not professional grade.
How much does pressure washing cost?
The cost of pressure washing depends on what exterior property areas you want washed. It generally costs a minimum of $100-$200 for a small house or just the driveway, up to $600-$800 for an average-size house, driveway, or deck).
Can vinyl siding be pressure washed?
Vinyl siding can be pressure washed, but it’s important to choose the right setting on the washer, as well as the right distance from the surface you’re trying to wash. Intense pressure that’s too close can damage vinyl siding.