Opportunity is missed by most people because it is dressed in overalls and looks like work. - Thomas Edison
We have a drop ceiling in out shop. I pulled every panel out this summer to hopefully get some relief. We have AC but the dock doors are still always wide open in the summer
If it's an option, go with expanding spray foam insulation. It is expensive on the front end, but BIG savings later.I have open cell in my storage unit and it does well. I have a client that probably has closed cell on the underside of his homes roof and he keeps his av equipment (amps and such) in his attic because it doesn't get higher than like 90 degrees. Keep in mind everyone's attics around here push like 150+ as we are in southern Louisiana!Now that I own my building I'll likely be looking to get open cell sprayed on my roof... Even with the radicure and a quartz flash back it gets a bit warm. I'd rather spend ~$3k on insulation vs $1000+ on a mini split and trying to find or add another electrical box to fit it in.