Why use sheetrock for fire protection in a safe?
Sheetrock is relatively inexpensive and is actually very effective in a fire. It transfers heat extremely slowly. A typical gun safe may have over 100 pounds of sheetrock inside of it. Moisture, normally trapped in the gypsum mixture, when heated above 212 degrees, turns to steam and escapes. This process is called ‘calcination’ and will hold the internal temperature of the safe at approximately 220 degrees until the sheetrock has dried out completely.
