- Nov 29, 2022
I will be installing 36' of flexible liner. Because the chimney design gradually becomes narrow in one direction and wider in the other direction as it approaches the roof line, the top six feet will be a 4" x 10.35" oval section connected to the 6" round. The round will be pre-insulated but the oval section will not be because of space restrictions. I was told this assembly will be in the 70-80 lb weight range. This liner will be getting pulled up from the bottom with a hand cranked winch setup because of the chimney design, weight & length. I have concerns about properly supporting the weight of the liner. This is a brick unlined chimney and the top courses are stepped out a bit, leaving small horizontal shelves on the inside of those top three courses. I thought I'd attach some 14" long flat stock to the liner on the long sides of the oval and then rest them on some steel rods going from the shelf on one side to the shelf on the other. I figure that will support the top end so I can unhook the winch cable and pulling cone. The liner will then stick up through the oval collar of a stainless steel full chase cover and the collar and liner will be connected with stainless steel screws . The bottom termination will be a tee. Assuming that all works out, do you think I should clamp some support legs on to the tee to take weight off of the top connections?