had a 20 year old gas water heater and an 80 % nat. gas furnace venting through reg. b vent chimney .
replaced both units with direct vent high eff. condensing units.
want to block unused chimney, what to do, spray expanding foam at both ends?? other ideas?
replaced both units with direct vent high eff. condensing units.
want to block unused chimney, what to do, spray expanding foam at both ends?? other ideas?
