Home>Discussions>PLUMBING>Washmachine drain leak
5 posts / 0 new
Last post
daveebecker
Washmachine drain leak

My drain for the washmachine leaks in the concrete slab in the garage which is about 18" below the house slab. It only shows water in the garage after a few loads. It doesn't leak at the floor level @ the washmachine but comes out in the garage, about 5 feet away along the same outside wall but not outside the house. How can I find and repair the leak.
Thanks Dave

HoustonRemodeler
Re: Washmachine drain leak

You can hire a plumber who has a camera to send down. Measure how far the camera goes down the hole, combined with the video will tell you where to dig through the slab. The nicer $$ cameras have a locating beacon to pinpoint the location.

Make a hole bigger than you think you'll need.

daveebecker
Re: Washmachine drain leak
HoustonRemodeler wrote:

You can hire a plumber who has a camera to send down. Measure how far the camera goes down the hole, combined with the video will tell you where to dig through the slab. The nicer $$ cameras have a locating beacon to pinpoint the location.

Make a hole bigger than you think you'll need.

Is there a cheaper way to fix it without going thru the concrete??

HoustonRemodeler
Re: Washmachine drain leak

1- Tunnel under the slab from the edge

2- A well trained group of moles with tiny little miners helmets.

farmer52
Re: Washmachine drain leak

The waste line under the floor is probably, mostly stopped by heavy material like sand. Each load that has just a little heavy material puts it in the pipe. Over time if your sewer lines are not pitched just so, the heavy material will fall out.

If you do one load it will get through after a while, several probably overloads it and the water starts to back up. It is also getting higher in elevation when it does this and putting pressure on the old joints under the floor.

At the hardware store they have a balloon fitting for your hose. It makes a seal in the drain and blows water under pressure through the sewer pipe. This may move the sand along and ease the problem. If it dosen't work and the pipe still leaks, or leaks worse, you're not out much as you'd have to fix the pipe anyway.

Worth a try.

Sponsored Stories

TV Listings

Find TV listings for This Old House and Ask This Old House in your area.