Q. My 3-inch vent pipe for my house has been frosting up and plugging. I have never had this problem in the past. I know it had been subzero for a while. To me that is the worst time to have to go on ...

The roof position is one of the most difficult and dangerous, yet it’s also critical. Roof firefighters are the eyes and ears of the incident commander (IC), as well as all of their brother and sister ...