Sewer Roof Vent Iced Over

Causes of blocked sewer vents and their solutions.

Sewer roof vent iced over.

There are a number of possible causes of blocked sewer vents. A gurgling toilet may indicate a clogged or frozen vent stack. The frost free sewer vent stays clear of ice without treacherous trips to the roof patented easy to install vent sized to fit all standard pipes. I installed insulation wrap on the sewer vent pipe in the attic but it didn t help much.

Sewer vent pipes on the north side of the roof also may be more prone to frost plugging than those on the south side of the roof. Typically the short smaller diameter vent pipes less than 4 inches can freeze shut. Sewer vent pipes are on the roof of homes and other buildings. If enough snow falls in your area during a short period of time the pipes may become clogged with the snow which may freeze in the vent pipe.

The outlet on the roof has still frozen twice this winter. Try to have the vent pipe come out on the sunny side. These three are the most common. For long periods of cold weather install a temporary heat tape down the vent pipe on the roof.

If you live in a cold weather environment your sanitary waste system s roof vent line probably freezes in the winter. What is a plumbing vent. Your plumbing vent pipes sit exposed on your house s roof where objects such as tree twigs tennis balls and even snow may fall down the pipes. If you started to experience the problems described above after a snowstorm snow on the roof is probably blocking your sewer vent.

If this happens pour warm water down the roof s sewer vent stack. Just as drain pipes remove water and waste from your home the plumbing vent pipe also known as a plumbing air vent removes gas and odors it also allows fresh air into the plumbing system to help water flow smoothly through the drain pipes however no water. Snow buildup in your vent pipes can lead to sewer gases inside your house. Increase the size of the vent pipe 30 freezing occurs 1 per 12 hours.

The diameter of the vent pipe varies from 1 1 2 to 6 inches. Paint the vent pipe black so it absorbs a little heat from the sun.