BE SURE YOUR LINER WILL FIT BEFORE PURCHASING!!
After much research, I decided on a FireFlex 6" smooth wall liner for my chimney. My chimney is constructed of brick and has 8x8 clay liners installed which measure 6.25-6.5" inside so I thought I'd be good to go with a 6" liner and pour-in insulation. My order was received very quickly which was great! Shortly thereafter is where everything went south. Upon attempting to install, I found that the liner fit extremely tightly in the flue due to my tiles not lining with each other up perfectly. In fear of damaging, I stopped and gave Fireside a call about returning for a 5.5" liner. They said that they could not accept a return since I had already attempted to install the liner. At this point I decided to give it a try with a bit more effort. After getting the liner about 10 feet down my 22 foot chimney, I attempted to turn the liner and split it in two pieces. Unfortunately, I'm now stuck with a $1,300 pile of scrap. Having just bought this house a few months back and dumping all of my savings into it, this is a huge blow. PLEASE, do yourself a favor and give yourself a comfortable margin of error when you're deciding upon a liner size!!