Dryer vent - Underground installation

Old 09-21-09, 04:47 AM
Thread Starter
Join Date: Sep 2009
Location: USA
Posts: 18
Upvotes: 0
Received 0 Upvotes on 0 Posts
Dryer vent - Underground installation

Trying to figure out how to pipe out a dryer vent. My home basement block set is ground level. So if I was to punch a 4" hole out the sill, the dryer vent would be sitting on the ground.

For looks. I don't want to come out of the sill with 4" PVC-90 degree up- 15" riser- goose neck.

I would rather move the elbow underground. Bury the 90 degree under the ground, punching through the cinder block wall, keeping the riser flush against the wall, with a goose neck. So all you would see is the riser coming out of the ground with a 180 on top of it for water sake.

My questions are this.

Is there a certain PVC for UG use or can PVC 40 be used?

Is it ok to use PVC 40 for dryer vent since I am burring it underground, there should be no chance of static build up from the lint?

When patching the hole around the PVC, should quickcrete do the job or should I tar it also for water leakage?

P.S. Was told to move this post from Kitchen Large App to Here from Mod.

Last edited by dpslusser; 09-21-09 at 04:48 AM. Reason: Moderator
Old 09-21-09, 05:55 AM
Join Date: Oct 2008
Location: New England
Posts: 9,460
Received 47 Upvotes on 43 Posts
Hi dp, I can't answer all of your questions, but can advise a bit. Condensation would be an issue with an underground exhaust run, therefore if you go that direction, you may need a larger PVC pipe or other with insulation and then a metal pipe inside of that. Never done it so not sure about any details. The other issue I saw was the need for a damper flap on the exit of the vent and the ability to clean everything out.

It probably can be done, although I suspect your concerns about using PVC are correct. Others will know.


Thread Tools
Search this Thread
Ask a Question
Question Title: