Different types of automotive spray booths are available for painting vehicles, including open, cross-draught, low-draught, and downdraft booths. Open booths are the cheapest and draw air through the front, while cross-draught booths draw air through filters on either side. Downdraft booths are the most expensive and draw air through top-mounted filters before expelling it through vents at the ends or sides of the cab. Jointed booths are the most expensive and expel exhaust under the floor.
There are several types of automotive spray booths used to paint vehicles, each with their own practical benefits. The cheapest of all the car spray booths and a commonly used beginner booth is the open spray booth style. Other types of automotive spray booths are the cross-draught or cross-flow spray booth and the low-draught spray booth. Other booths are used for powder coating applications and are typically used for painting trims and sub-assemblies of a vehicle.
Open front auto spray booths are made using only three sides. The booth works by drawing fresh air into the booth through the open front, through the work area, and out through an exhaust fan in the rear wall of the spray booth. This type of spray booth acts as a means of containing water spray that contaminates the rest of the shop area. The cab does nothing to prevent contaminants from settling on a painted vehicle as the air that is drawn into the open cab is only as clean as the rest of the air in the garage.
An inexpensive and commonly used, fully enclosed style of automotive spray booth is the cross-draught type. This type of spray booth draws in air through a filtered inlet on one side of the booth and expels the air through another filtered exhaust vent on the opposite side of the spray booth. A large electric motor that powers an exhaust fan is typically mounted inside the exhaust vent and drives the expelled air into the garage or outside the building through a system of ductwork. The main advantage of this type of booth over the open front design is the elimination of airborne dirt particles, insects and other debris from inside the spray booth by drawing the air through an intake filter.
Downdraft car spray booths are top of the line and can be purchased in different configurations at different price points. With a modified descending cab, fresh air is drawn into the cab through top-mounted intake filters and expelled through vents at the ends of the cab. The mid-level descending cab draws air in through the upper filters and expels it through filters located along the sides of the cab. The top model and most expensive of all the car spray booths is the jointed spray booth which expels the exhaust into an area under the floor of the booth.
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