HI im new to the site and wish i would have found this site yrs ago. This is one of the best sites on wood burning info (great site i love it). Any way im not completely new to burning wood but new to chimney relining. I have a 2story house with an old brick chimney in the middle of the house. The chimney is unlined and the last guy that owned the house relined the chimney with black single wall stove pipe. So i ripped all 26ft out and instaled a ss 304 ridged liner. Burned 2cords last year and chimney needed vary little cleaning and i have a great draft. I didnt know about insulating the liner for safety of a chimney fire. The chimney bricks radait heat nicely after a long week of burning. So with that said my question is.I want to insulate my liner with the champion insulation mix. But if i had to remove the liner for some reason would it be removable or should i use vermiculite or perlite insulation what are the pros and cons? All the help would be greatly appreciated.