I have an unconditioned garage with a few water lines near the exterior wall and above a garage door.
I live where the temp could drop to 0 one or two times a year, but in the winter is mostly about 20 degrees for 1 month. ( It doesn't freeze in there, but it is cold)
My current plan is to put R15 faced insulation against the floor for ease of install and then another R30 batt - then put the drywall back up.
My questions are this:
- Would foam be a better insulator in this situation?
- Would an expensive garage heater be a safer option than insulation?