Types of Spray Paint Booths and Their Benefits
While they used to be exclusively about auto shops, spray paint booths have now expanded into many other applications. This technology has proven its usefulness in various industrial settings now involving anywhere from tiny circuit boards to massive equipment.
Besides being an efficient finishing method, spray paint booths also provide a safe environment for workers, being compliant with the OSHA (Occupational Safety and Health Administration), NEC (National Electrical Code) and other security groups.
Spray Paint Booth Types
As with everything else in the manufacturing business, there is a spray paint booth created for your particular needs. There are models meant for motorcycles, small plastics, aircraft and so many more.
Here are the main types of spray booths you will find nowadays:
These models have three parts: a ceiling, a rear exhaust plenum, and two sidewalls. Air flows right through the front and leaves from the exhaust at the back. Open booths are often used for finishing furniture and for woodwork. Such booths can also be found in auto repair and manufacturing centers.
This type of spray booth is enclosed, and exhausts as much air as it draws in. In colder environments, a heater or air makeup system is used to regulate the temperature and maintain a desirable level of air purity. Manufacturing and refinishing electronic devices and automobiles are common applications of pressurized spray booths, where cleanliness plays a huge part in the finish quality.
In non-pressurized booths, air is drawn from and expelled into the building with the use of filters. There are environments in which a heated air makeup unit is also needed. A lot of industries, such as fiberglass, auto manufacturing and metalwork, use non-pressurized booths.
Paint Booth Configurations
Non-pressurized and pressurized spray paint booths alike can have different airflow configurations, each one with its own pros and cons.
In cross flow booths, air moves from front to back and side to side.
With downdraft booths, you have air moving from the ceiling downward. This configuration can have varying styles, the “pit” (forming part of the exhaust system are an excavated pit and tunnel) being the most popular.
In semi-downdraft booths, air comes in from top to rear, while in side downdraft booths, it flows in from the ceiling going to the sidewalls where the exhaust filters are.
All booths are made for certain applications, depending on the needs of the user. For instance, when finish quality is crucial, best choices are the downdraft and side downdraft booths.
If cost is an issue, semi-downdraft and cross draft are preferable. Lastly, if space is at a premium, the best option is often the cross draft model.