Sealing flue

Last Edited By Krjb Donovan
Last Updated: Mar 13, 2014 03:11 PM GMT


What is the best product for sealing the galvanized pipe from the oil furnace into the chimney flue? Is basic mortar okay, or should I use a furnace cement or some other product?



High temp furnace cement is a good call. I would first recommend an NFPA-211 level II inspection. Feel free to use the links at the bottom of my home page at to help find an inspector offering these inspections. Good luck.


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