// Definition
Purpose-built refrigerated rooms used for hash making, dry sifting, and solventless processing, requiring careful consideration of flooring, humidity control, drainage, and temperature management to prevent damage to concrete foundations and ensure food-safe processing conditions.
// From the Episode
Colin Palmer opened the discussion on freezer floor challenges, describing how he cracked an entire building foundation by not installing an R-rated floor under a cold room. He recommended urethane over epoxy (which cracks below 32F), specifically Ghost Shield Lithi-Tek 9500 with urethane membrane. Bubbleman advocated for massive center drains and warned that workers spending all day in cold rooms risk health problems. Aaron demonstrated that Michigan's natural seasons provide free cold chain for outdoor hash making.