How To Close Off A Roof Stack Vent

The vents you re seeing are ridge vents on top and a soffit vent on the bottom.

How to close off a roof stack vent. Don t worry about an airtight seal. Start by feeding the auger a short distance into the vent to check for an obstruction close to the vent opening that you might be able to pull out. Just nail a board over the opening from the inside. If the sink is the only vent on that pipe go to the attic and cut it off below the roof line.

On the outside these vents are almost always covered with a downward angled cover. To use the hand held drum auger. 2 cut away the roof mastic where. I wouldn t even bother to conceal the outer cover houses have these kinds of covers all over.

Read and follow the auger safety instructions then put on work gloves and eye protection. Twist the cap as you lift it off the end of the pipe. If you close them off your attic will overheat in the summer and cause ice dams and water damage if it snows. Remove the fasteners that secure the rain cap to the top of the vent pipe with a screwdriver or nut driver.

Buy one for the interior and seal it in with silicon as close to the outer wall as possible. If windblown rain or snow is frequently entering the gable vents close them. It doesn t matter if these exhaust vents are ridge vents gable vents roof vents or some combination.