We decided to remodel a back room of our house. It appears to been a room added to the back of the house years ago. We found the original siding beneath sheetrock. It has always been hot during th esummer and cold during the winter. WE found alot of gaps in the wood and siding. We also found some surprises. Like a live garter snake behind the sheetrock and a snake skeleton behind some insulation. The back door was the biggest surprise. Look how the locks where attached. You know 3" screws only work when they go into wood, not the sheetrock. Now I need some help as to how to fix this problem.