septic fumes in laundry room
For some time we've had a problem with the vent from our laundry room. I believe the problem is that the vent is not tall enough to "draw" properly. We have a tall and steep roof that has two ridges. The vent from the laundry comes up on the front of the house, and is mostly hidden due to its placement between the ridges.
This good from a visual standpoint, but when the weather is cold it can causes gas to run back down the pipe into the laundry room. Extending the pipe on top of the roof high enough to cure the problem would probably look pretty awkward.
The only access I have to the pipe indoors is in the attic. Could I cut the pipe there, and install a one-way valve?
Any other ideas? Seems like something that someone else has likely experienced before.