Dry wall over pipe

Old 11-26-19, 08:54 PM
Thread Starter
Join Date: Jan 2013
Location: USA
Posts: 2
Upvotes: 0
Received 0 Upvotes on 0 Posts
Dry wall over pipe

When my condo was built, the upstairs sewer pipe was right up against the downstairs wall line. What the builder did was to remove the paper and plaster from part of the drywall, leaving the sewer pipe right against the exterior paper. When the upstairs toilet became misaligned because they didn't place it properly, the water ran over the edge of the pipe, down the pipe, and into the drywall. However, the downstairs wall was covered in heavy wallpaper, so the damage wasn't visible until we removed the paper years later. The drywall is all puckered around the pipe. When I removed the drywall, I discovered the close proximity of the pipe to the paper. I cannot move the pipe and I cannot move the wall. So I will have to remove some of the limestone on my patch to cover the hole in the wall and the pipe. Besides "very carefully," how do I remove the limestone without damaging the paper and losing wall integrity? Thanks.
Old 11-26-19, 10:51 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Jersey
Posts: 62,550
Received 3,493 Upvotes on 3,136 Posts
A picture would certainly be helpful but it sounds like you'll just need to use spakling tape to cover over the pipe. How-to-insert-pictures.
Old 11-27-19, 02:29 AM
Forum Topic Moderator
Join Date: Mar 2005
Location: USA - N.E.Tn
Posts: 45,240
Received 759 Upvotes on 664 Posts
Ideally you'd laminate the wall with another layer of drywall but that's easier said than done.
I'd get some of the wide mesh tape and put it down with a setting compound.
btw - drywall is made with gypsum not limestone
Old 11-27-19, 04:09 AM
Marq1's Avatar
Join Date: Sep 2016
Location: USA MI
Posts: 9,482
Received 1,145 Upvotes on 1,038 Posts
Not the first time that was ever done!

How much into the drywall?

If minimal you could cut back to the studs, add some furring strips to the inside and install 1/4" drywall across and finish.

If you need thinner, as mentioned you can cut away the bad and install mesh tape or even expanded metal (like they use for gutter covers) and just mud the entire area closed!
Old 11-27-19, 06:39 AM
Join Date: Sep 2019
Location: Canada
Posts: 1,823
Received 268 Upvotes on 240 Posts
What are you doing with the wall after you patch it?

If you are planning on painting it then adding a layer of drywall is the way to go.

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: