Mobile spray rigs for the SPF insulation industry are generally configured in bumper-pull trailers, gooseneck trailers or commercial box trucks. The type of application partially determines the size of spray rig chosen. For example, commercial insulation or roofing projects are generally larger than residential insulation projects and therefore require a larger trailer or box truck allowing for more storage of materials. It is not uncommon to spray 4-6 sets of foam per day in these types of applications.
Spray foam insulation projects normally require no more than 2-3 sets of foam materials to be stored inside of the mobile spray rig. It is uncommon to spray more than this amount of product in a single day due to tighter workspaces and less trigger time while maneuvering from room to room or through attics and crawlspaces.
The only other factor to consider when choosing your new mobile spray rig’s size is the power source.