How To Seal Furnace Vent To Steel Roof

Some caulk guns have built in tube cutters that work.

How to seal furnace vent to steel roof. Use the knife blade to scrape the pipe clean and smooth. Remove the rubber boot. 2 cut the tip of a caulk tube with a utility knife. Brush away any dirt or dust from the area around the furnace vent that you will be sealing.

Then run a second bead of caulk just below the first bead. Apply a thick bead of lap seal caulk around the seam between the vent pipe and old rubber gasket. Given the most common causes is cracked or damaged rubber boot the most ideal solution is to remove it and replaced it with a new. Use the tar brush to apply a thin layer of tar to the edges of the hole.

Other causes of leaking roof vent are including broken seams on the metal base loosen nails and rusty metal collars around the vent pipe. Trim the flashing in the center of the rubber boot with a roofing knife so it fits snugly around the pipe. Slide the rubber boot over the pipe to check the fit. Trace the outline of the base of the rubber boot onto the metal roof with a pencil.

This will help to create the initial seal between the metal roof and the vent mechanism. Be sure to like and subscribe in order to help me bring you more helpful videos filled with tips and tricks i ve learned over the years.