the shed im growing in was completly clapped out i fixed the roof nearly every pannel on the dam thing i then gave is 2 thick layers of pond lino then painstakingly stapeled 5 rolls of cooking tin foil to the wall for reflection.
i am currantly working on a heat proof sheet with a zippa down the middle that you have to undo after opening the door just for that bit of extra warmth
peace out 1love...