06:36PM | 11/12/04
Member Since: 11/11/04
6 lifetime posts
I have an 18-month old townhome with a pipe for radon that comes out of the foundation. I just noticed this evening while it was raining that there is a VERY slow drip of water (only a few drops per hour) coming from one of the joints in my radon pipe. It looks like it's actually coming out from the pipe at the joint, but I don't quite understand why there would be water in the radon pipe. That's what made me think that maybe my roof was leaking and water was running down the radon pipe into the basement (which happened before with my flue), but the sides of the radon pipe aren't wet and it really looks like it's coming out from inside the pipe. Any ideas? I can easily patch up the leak, but I'm thinking I should probably figure out the source of the problem before I do that. Thanks!


07:48PM | 11/28/04
Member Since: 11/27/04
172 lifetime posts
it vents out the top of the roof and has no rain cap ,just like a plumbing vent pipe. so water will get in it. no real problem, but fix the leak joint so no radon air leakage into the house.


01:28PM | 11/29/04
Member Since: 11/11/04
6 lifetime posts
Thanks for much for your response. Should I ask the roofer to put a rain cap on the radon pipe? Also, I'm not sure it's 100% tied to's leaked when it's not raining and it's been raining with no leak. Any other thoughts? Thanks again!


10:26AM | 12/12/04
Member Since: 11/06/02
1280 lifetime posts
The pipe is there to allow air in the soil under your house to vent up through this PVC top the oputside instead of building up high levels of Radon on the inside of your house.

This means that when moisture is present in the ground, it will also vent up and out, a goodthihng. but it can also condense on the inside of the pipe along the way and this condensate is probably what you are seeing drip out at the elbow connection. Simple PVC glue might help, but you might need a caulk on the joint. radon will not leak out of it unless a bird decides to block the top.

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