How To Unfreeze An Outside Air Vent Roof

I also used to climb up on the roof and thaw the vent with hot water.

How to unfreeze an outside air vent roof.

As we know from basic physics nature abhors a vacuum so the air supply for the vacuum in the sump had to come from somewhere else. Excessive snow on the roof can block the vent s stack and cause freezing. The hot moist air would travel up the vent hose towards the roof and condense in the cold attic. Here is the update video on this pipe https www youtub.

This blockage keeps air from traveling up the vent pipe properly. There was no access to the attic until i had the wood stove installed. The water would then run back down and drip out of the exhaust fan onto your head. But now the roof vent was frozen and could not supply the air needed to eliminate the vacuum in the sump.

Over time these vents can become squeaky from moisture and age related natural degradation. After i had access i ran the vent hose under the attic insulation and installed a vent in the. And when the need arises. Plus in the cord on ground level for a few hours.

Under normal operation the air to relieve that vacuum would come from air flowing down through the roof vent. Turbine vents are those ubiquitous devices found on almost every residential rooftop. Firstly the pipe freezes at the roof outlet due to condensation of the warm gases as they reach the cold outside air condensation continues until the pipe finally freezes right over. Now i loop a 2 ft pipe heating cable about 8 10 inches into the vent and tape the rest of it to the outside of the vent i do this in late fall before it gets cold and icy on the roof.

There may be a clog in the sewer line right where it meets the vent pipe. Designed to maintain steady ventilation to attics these devices are necessary to prevent mold and excessive heat buildup under the roof. To provide both of these functions terminating the drain vent high up above the roof is necessary. The pipe in the attic is already insulated now it was time to do something on the exterior as well.

A gurgling toilet may indicate a clogged or frozen vent stack. Then the vent pipe may be re angled and a new cap may be put into place to keep debris from clogging it again.