RegionalChaos
Well-Known Member
I got a lead on some discounted 4x8 sheets of 3" polystyrene insulation. It's got an R-value of 5 per inch. So it'd be R-15 at 3". Is that plenty? If I double layer it to R-30 will I see a big difference? It's possible I might want to keep my ferm chamber outside, so I'm wondering if the beefier level of insulation would make more sense? I'm planning to cool it with a mini-fridge. Will that work outisde? Any insight is appreciated. Thanks!