Paint Booth Exhaust Ductwork for Crossdraft Booths
Crossdraft paint booth exhaust ductwork carries air from the filtered exhaust end of the booth to the fan and discharge point. Double D Mechanical coordinates duct layout with intake doors, rear filter banks, fan supports, wall or roof penetrations, make-up air and shop traffic around the booth.
Discuss your installationStraight Airflow Through the Booth
Crossdraft booths rely on air moving from the intake end across the workpiece to the exhaust filters. Ductwork changes should support that path by keeping the exhaust end clear and coordinating fan performance with the booth opening.
Rear Filter Bank Service
The exhaust wall needs room for filter changes, panel access and cleaning. Duct transitions, fan connections and supports should not crowd the area technicians need to maintain airflow.
Discharge Route and Building Conflicts
The duct path may cross mezzanines, structural steel, cranes, storage areas or other mechanical systems. A site review helps identify the cleanest route to a wall or roof discharge point.
Replacement Air Considerations
Exhaust ductwork removes a large volume of air, so make-up air location and delivery matter. Door movement, shop drafts and booth pressure should be reviewed along with the duct route.
Frequently asked questions
What is the main ductwork concern for a crossdraft booth?
The exhaust end must pull air evenly through the booth while leaving room for filters, fan service and discharge routing.
Can exhaust ductwork run through the roof?
It can when the building layout allows it, but roof structure, weatherproofing, fan support and other utilities need coordination.
What should be checked before reusing existing duct?
Check size, condition, leakage, bends, access doors, fan connection, discharge location and whether it matches the booth airflow needs.
How does make-up air affect a crossdraft booth?
Poor replacement air can cause unstable booth pressure, difficult door movement and uneven airflow across the workpiece.
What should a facility engineer provide for planning?
Provide booth dimensions, fan information, existing duct photos, roof or wall details, make-up air equipment location and shutdown constraints.