Advice from Phil
Pressure WashingWhen it comes to pressure washing your home or business, there is a right way and a wrong way to do it.
The first mistake is usually made when a person takes a pressure washer and starts blasting away damaging good paint film. When you are unaware of the proper way to use a pressure washer, you’re liable to do more damage than good. You need to be careful and not use too much pressure. Excessive pressure will not only break a good paint film, it can force water behind surfaces of the exterior of your home/building causing wet insulation, trapped moisture or worse water inside from around the windows and doors. Don’t forget, protecting your lighting and electric is also important when handling water against your house. These are some of the many things to consider and keep in mind when pressure washing.
The procedure our employee’s at Phillip Patterson Painting use is a little different: we call it "pressure rinsing". When using a pressure washer, our goal is to remove all of the air pollutants that stick to the house without causing the damage as mentioned above. Where you’ll find the worst build ups of these pollutants is where the rain does NOT hit (underside of cornices, window headers, door headers, backs of columns, porch ceilings and trim, etc.). These areas continually collect dirt and pollutants which are sometimes hard to see. If paint is applied over these dirty areas the new dried paint film will not properly bond to the previous older film causing future problems with peeling. Windows and doors are hand washed versus pressure washed to insure we don’t force water inside the building from around the weather seals.
So, the proper procedure for pressure washing, according to Phil, is cleaning the home or business with a hard rinse, while making sure not to break good paint film. If the areas to be cleaned and painted already have loose, scaly paint it is best to hand scrape first, collect and dispose of any paint chips, and THEN pressure rinse. This is the most common and effective way to prepare the exterior surfaces of residential and commercial buildings alike for new paint.