Gurgling Drains? Check This! - American Radon Mitigation

Gurgling Drains? Check This!

Gurgling Drains? Check This!

In this article, we are going to discuss a quick tip if you are experiencing gurgling drains. 

If you are a contractor and are ever up in your customer’s attic and you notice something is not right, you should point it out to them. They will appreciate it!

This issue

We were up in an attic recently and noticed that the plumbing vent was pitched the wrong way. We think they probably had a new roof put on at some point, and they switched the flashing out on the roof to a frost-free one. A metal flashings that goes over the whole top of the pipe and the pipe was probably too tall to fit.

Pipe unhooked in attic

Some way or another this pipe got unhooked, and it got pushed down and now fills with rainwater because it’s not sloped right.

We asked the customer about it and they mentioned their bathtub gurgles. It’s been doing that for a few years. They had somebody out to diagnose it, and they couldn’t figure it out.

If you see something like this, mention it to your customers. They’ll appreciate it.

The Fix

Pipe penetrating the roof

Now let’s fix the issue. Here’s that pipe that we were looking at in the attic. We’re guessing because this is an addition, on this side of the house, that this is for the master bathroom that they added.

Roof Flashing

When they added this, they probably had a standard pipe flashing like the picture above where the height didn’t matter.

Frost Free Flashing

We’re assuming maybe they had a re-roof done, and the roofer got rid of this open one and wanted to put this frost-free one on. This pipe is too tall. So maybe the roofer or somebody else unhooked the pipe, and it slid down so that it fit on it. Which created that trap in the attic that we just looked at.

Measuring to cut pipe to size

We’ve marked the height that we need here for the frost-free one.

Front pipe should look like back pipe

This one should look like the one behind us.

Cutting Pipe to Size

Now we are going to cut the pipe.

Milwaukee Reaming Pen

And we will ream the top. We use the Milwaukee Reaming Pen* for doing the inside first. *(If you purchase from the link we earn a commission)

Reed Deburring Tool DEB4

Followed by the DEB4 Reed Deburring Tool. (If you purchase from the link we earn a commission)

Installing Frost-Free Flashing

Now this should slide over the top and we can just get this lead to form around that fitting. We kind of mold it around there and grab a socket, so we can tighten the nut up.


Re-hook Pipe for correct pitch

That’s all there is to it. The customer should not have any gurgling from the bathtub anymore.

Looking for help with your radon mitigation project? Check out our consulting services.

We look forward to working with you.