A portable paint booth has a floor, roof and walls made of non-porous materials. A portable paint booth may have a flexible polymeric floor, a flexible polymeric roof, flexible polymeric walls extending between the floor and the roof, at least one door disposed in a front wall of the booth, rigid poles coupled to the walls and supporting the roof, an air inlet disposed in a first wall and adapted to receive air input into the spray booth from a mechanical blower to pressurize the booth with a positive pressure, and an exhaust port disposed in a second wall. The booth may be transported in a normal utility vehicle and assembled by a single person, facilitating safe and effective painting when permanent structures are not available.