You ovalized while it had insulation aroundI ovalized the last few feet by hand to get through the frame. No cutting and the fireplace can be restored to its original condition for the next guy...though I can't imagine why he'd want too.
It was a flex liner and I ovalized it as needed for the install first. Then, wrapped if in blanket insulation and dropped the whole thing down the chimney. No problem, no cutting.You ovalized while it had insulation around
Then some lengths of wire 'twist-tied' around it all about every 3 feet.Both steps are used. Tape to hold the insulation blanket in place so that you can sleeve it easily with the mesh.
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