Sloping finished concrete


Old 12-10-19, 11:15 AM
Thread Starter
Join Date: Dec 2019
Posts: 1
Received 0 Votes on 0 Posts
Sloping finished concrete

Hi, I have a question that I'm hoping you can assist me with. A few months ago I poured a concrete slab with pex pipe embedded for radiant heating.
So here is my dilemma. As an after thought I decided that I would like to have a wet room in my bathroom, the problem is that I need to slope the floors, but, I can't do any digging because of the pex in the floors. How can I slope for drainage without digging?
What options do I have?
Now this is a new build, so I already have PVC running under ground, and there is a square hole in the floor that I believe is for drainage purposes.
The sloping of the floor is what I am not sure about. Thanks so much for your help. Have a blessed day.
Sponsored Links
Old 12-10-19, 11:29 AM
XSleeper's Avatar
Group Moderator
Join Date: Dec 2004
Location: USA
Posts: 23,796
Received 285 Votes on 261 Posts
About all you can do is add topping mix in the areas you need to raise. Bonding will be an issue since topping won't last long if it's not properly bonded. So you will want to use an additive and / or spread a slurry just before adding the topping.
Old 12-10-19, 11:42 AM
Group Moderator
Join Date: Mar 2003
Location: NC, USA
Posts: 21,421
Received 299 Votes on 273 Posts
There are foam shower floor kits that rest on top of the slab/subfloor and include a slope for drainage. Read their instructions/recommendations carefully though. I'm not sure how going over a heated floor would affect them. Since this or anything else you do will be building your slab up there will be a lip or small step up (trip hazard?) at the entrance to your wet room.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

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