My daughter, an arson investigator, called about a recent fire. A man had finally built his 'dream shop', a two story affair attached to his home and had just gotten his occupancy permit when it caught fire and burned up a life-time collection of tools and equipment. Origin cause determination was welding sparks. Seems he caught a rag on fire while welding, stomped it out and then threw it next to the wall and left the shop. Problem was, the rag wasn't out and the wall,insulated with fiberglass, was NOT covered with sheet rock. The rag flamed up, caught the kraft paper with asphalt backing on fire and destroyed all his equipment and the addition. Fortunately fire fighters contained the blaze to the shop area. Cori said the man was crying uncontrollably. When we built our new shop this summer, we installed fire sprinklers for $200 in materials. I also used 5/8" fire rated sheetrock and moved most all flammables to a vented metal cabinet outside. I also covered the wall behind the welding table with sheet metal to reflect sparks and cherries. Wanted to share that story so that we might all give our 'shops' a hard look towards fire prevention an hopefully learn from others' mistakes.......