Jim Baird Posted August 7, 2020 Report Share Posted August 7, 2020 I love giving credit where it is due, but I would never include these comments in my all-business report. I get paid to find not to gush. Anyway this mason had to find his way from the hearth to the middle of the roof ridge, so he did it with a spiral corbel. Not sure how he worked out his liners! Quote Link to comment Share on other sites More sharing options...
Marc Posted August 7, 2020 Report Share Posted August 7, 2020 (edited) A true spiral would leave a clear vertical column for the liner about its axis. Edited August 7, 2020 by Marc Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted August 8, 2020 Report Share Posted August 8, 2020 Liner? What is this "liner" that you speak of? Quote Link to comment Share on other sites More sharing options...
Jim Baird Posted August 8, 2020 Author Report Share Posted August 8, 2020 There is a single clay flue liner in the middle, likely straight up. Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted August 8, 2020 Report Share Posted August 8, 2020 *Real* chimneys don't need no stinkin' liners. 1 Quote Link to comment Share on other sites More sharing options...
Marc Posted August 8, 2020 Report Share Posted August 8, 2020 (edited) They don't? I thought they all did. Edited August 8, 2020 by Marc Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted August 9, 2020 Report Share Posted August 9, 2020 In my area, chimneys didn't start to have liners till about the '60s. Most of the houses that I look at are older than that. Quote Link to comment Share on other sites More sharing options...
Mike Lamb Posted August 9, 2020 Report Share Posted August 9, 2020 I rarely find problems with unlined chimneys that run up the middle of the house in cold Chicago. However, chimneys run-up the outside wall of the house is a different story. Quote Link to comment Share on other sites More sharing options...
John Kogel Posted August 10, 2020 Report Share Posted August 10, 2020 Here before mid-60's, it was common to add just one clay liner at the top for looks. In an older house, if you don't shine a light in there or take a pic with a flash, there is no guarantee of a lined chimney. I will call out any unlined chimney for repair. New rules demand full scaffolding and fall protection for a mason before he can even repoint the outside. Old chimneys are a liability because there is no cheap fix and fire insurance keeps going up. Cheapest and best is a conversion to NG with a metal liner. Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted August 10, 2020 Report Share Posted August 10, 2020 Quickest conversion is an earthquake. Quote Link to comment Share on other sites More sharing options...
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