Originally posted by za
thanks again for the reply. I dont know the history for that freezer and I guess Im wasting everybodies bandwidth and expert freebies
I learned so much from these posts but I was still wondering what the possibility of heat introduction from regular concrete as opposed to insulated concrete?
As far as defrosting I am not sure how often they've done that and I will check
The heat gain will be negligible from the concrete after 24 - 48 hours of box operation with or without insulation under the pad. It will also depend on how thick the pad is. I believe standard thickness is 4” yet I have seen as much as 6” and as little as 2” but they have an insulated floor in their freezer.
Your ground temp in VA should not create a problem either. I believe what we are talking about is concrete heave as the ground water freezes under the slab. After years of operation as a freezer, if you don’t have lifting cracks in your floor, your floor is probably insulated. If your floor is crumbling under the weight of the lift, then you have water infiltration causing the top porous layers to crack up. That would be why it was painted with epoxy paint. To seal out any top moisture.