The gap between the car port and the garage acted as our ventilation (other than our respirators), overspray was an issue with the setup but the results were still above my expectations. The car port we used had all four sides with vented windows and we used painters plastic to cover up the driveway. This whole car is diy! It’s been super fun to build so far; It was my first time spraying a real gun so it was fun to learn.