Hello everyone. Here is my dilema. The picture below is my current masonary block chimney with 7 X 11 clay liner. It is roughly 30 feet tall with about 1 1/2 feet below grade. My original plan was 6" insulated SS liner with T hookup. Now the problems begin. I planned on doing it myself since it seemed pretty straight forward but so far im unable to find any help. Plan B called for some qoutes and got 2, one for $4100.00 second for $3800.00 :bug: . Both said that did not include breaking tile if needed. They also wanted to use a 5.5" insulated liner which i not sure about. From all the information i can find this is not an extremely difficult job am i wrong? For that price i could possible run a new triple wall chimney but then i have problems with below grade exit. If i am way off on my figure's please feel free to tell me or any suggestions would be greatly appreciated. I was at about $800 for insulated liner Plus an extre $75 for extended T because my foundation is 2 feet thick stone. Is there really $3000.00 dollars labor involved?