Wood Scrounge
ArboristSite Guru
I have a fireplace insert that has a 6” flex SS pipe running up through the large masonry chimney. It currently has a steel plate with rock wool I made up, laying where the fireplace damper used to sit. This has worked well, but when I clean the flue pipe I have to take the plate out and then put it back in. It’s such a tight fit that the process is very cumbersome and time consuming. I was thinking about taking the plate out and putting something at the top of the chimney around the flue pipe, my problem is rock wool is very expensive and I really can’t afford it right now. Someone mentioned that plain yellow fiberglass insulation won’t melt to over 1000 degrees. Does anyone know if that is true? Or have any other ideas that don’t involve big money?