Powerwashing, or pressurewashing, uses high pressure water to clean surfaces. It is commonly used to remove dirt and grime from decks, walkways, patios, driveways and the exterior walls of buildings. Different methods of power washing are used for different jobs. Sand blasting is used when stripping and abrasion are needed. Chemicals and cleaning agents are used to aid in stain removal and cleaning. Soda blasting is an environmentally safe option that can be used safely around food equipment. Dry ice blasting can be used when it is necessary to have a dry surface, and is also safely used near food equipment.
Powerwashing requires both skill and expertise. Highly pressurized water is a powerful tool and has the potential to cut wood and seriously damage the structure of your house. It also can most effectively clean when in the hands of an expert.
What to look for in a powerwashing service
The following tips will help you select the best service for your job:
- Solid Reputation
- Certification through a national testing organization like the Power Washers of North America.
- Clear communication. Review requirements in detail so that you can evaluate the scope of work together before an estimate is drawn up.
- Written estimate. Get cost estimates in writing for services to be performed.
- Quality equipment. Commercial powerwashing equipment should have 11-15 HP (horsepower), 3000-4000 PSI (pounds per square inch) and release water at a rate of 3-5 GPM (gallons per minute). Equipment that is 2000 PSI and 2 GPM or less is not adequate. However, lower pressure is needed when washing wood, and contractors should have the necessary tools to modify their equipment for use on woodwork.
- Insurance. The company you choose should carry both liability and Workers´ Comp insurance to protect themselves and you in the event injuries or property damage occurs.