I'm Swapping out my Old Buck 27000 for My New Buck 91 this Sunday. I have to Add 14" of pipe to make up the difference from the Old Buck Adapter. The rest of the 25' Liner is Insulated with Ceramic ( I believe) Can I use Fiberglass on the new 14" section?? I dont want to get gassed out or have a fire... What do the Experts Say/Do.... Thaks in Advance.....
Yes Roxul is the right thing to use.....I'm guessing this is a fireplace insert so you can stuff the opening full going up into the fireplace with Roxul too if you do not have a block off plate. This is what I did with my Buck 91 and it has worked well. Roxul is about $40.00 a bat at Lowes