We do our best to make sure with proper measuring beforehand that the liner will go into your chimney without a hitch. Sometimes, however, in spite of our best efforts, the liner gets stuck–sometimes because of an offset, sometimes because of excessive mortar protruding from the flue tiles, sometimes because the flue tiles are not installed straight, sometimes in an unlined chimney because the space too narrow. We can usually get it free with some well-applied wiggling. Very rarely, it is necessary to take some bricks out at the point where the liner is sticking in order to maneuver it down. We should be able to tell you what the likelihood of this is beforehand.
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