Basement Wall Insulation
Studded walls of an unfinished basement can be sprayed with foam, while walls with drywall would need to have holes drilled between the stud cavities to inject foam in them.
Basement Ceiling Insulation
If there is any old insulation in the basement ceiling, it must be removed before the space can be insulated.
If there is a drop ceiling, the tiles will be removed, and the space will be sprayed with foam insulation.