Michigan Semi Downdraft Booths for Fleet and Collision Work
Fleet garages and collision shops in the Detroit area often start with a crossdraft booth and outgrow it. Moving to semi downdraft adds a ceiling intake over the front of the booth so air drops onto the vehicle before heading to the rear filters. The result is a cleaner finish without tearing up the floor.
Discuss your installationStepping Up From Crossdraft
Some crossdraft booths can accept a ceiling plenum and new intake arrangement; many are better swapped out. Booth height, panel condition and the size of the existing exhaust fan decide it. When the shell is short or worn, a new semi downdraft booth set in the same footprint is often the cleaner route.
Fleet Vehicles Are Not All Cars
Fleet bays see pickups, vans, utility bodies and small trucks. Ladder racks and service bodies add height, and liftgates add length. We size the booth around the tallest and longest vehicles you expect to paint, not the average one, and check door opening dimensions against them.
- Tallest vehicle with racks or equipment mounted
- Longest vehicle including bumpers and hitches
- Turning room to enter the booth straight
Air Make-Up and Building Pressure
Winter operation means the air make-up unit carries real heating load. In a busy garage with overhead doors cycling, holding booth pressure slightly positive keeps dust out. We set controls and dampers so the booth holds steady even when the shop around it does not.
Keeping Finishes Clean
Dirt in the finish usually traces to loaded filters, leaking seals or a pressure balance that has drifted. Routine readings and seal checks catch those early. We provide service visits and can walk your techs through daily and weekly checks.
Planning a booth or oven project in Michigan
Crews mobilize from Houston; Michigan is roughly 1,100 miles away, so equipment, panels and tooling are staged and shipped ahead of the install crew.
Manufacturing in Michigan is concentrated around Detroit, Grand Rapids, Lansing, and Flint. The sectors most likely to be specifying spray booths, blast rooms, powder systems and cure ovens there include automotive assembly and suppliers, office furniture, tool and die, and EV batteries.
Cold winters mean make-up air heaters are sized for sub-freezing intake, and booth or oven placement has to account for frost lines, snow loads on roof penetrations and winter slab work.
Frequently asked questions
Can our existing crossdraft booth be converted?
Sometimes. It depends on height, panel condition and fan capacity. We look at it and lay out conversion versus replacement before you decide.
Does semi downdraft work for vans and pickups with racks?
Yes, if the booth and doors are sized for the tallest configuration. That needs to be set during layout.
Will we need roof work?
Usually yes, for the air make-up unit intake and exhaust stack. If an existing stack is reused, we check its size and condition.
How do you keep the booth from pulling shop dust in?
By balancing supply and exhaust so the booth runs slightly positive during spray, and keeping door seals in good shape.
Do you work with our electrician?
Yes. We coordinate connection points and interlocks so the booth, lights, burner and fire suppression work together.