Need help with uneven floor


Old 05-14-08, 01:49 PM
Thread Starter
Join Date: May 2008
Posts: 10
Received 0 Votes on 0 Posts
Need help with uneven floor

Hello all

I am in the process of trying to install 12x12 slate tile in an area 12'x13'. The floor is concrete with a few hairline cracks and it slopes down about 1/2" in the middle of the floor, This slope spans the entire length of the area. I am assuming it was for water drainage because it leads to a drain in another area. The slope is gradual down to the 1/2" then back up in around 6'. I need to know if I would need to level this and what should I use to do so. The concrete will soak up water so I'm pretty sure there isnt any kind of sealer on it. It is smoot but not glossy smooth. What would I need to do to get the floor ready for the laying of the tile? Thanks in advance
Sponsored Links
Old 05-14-08, 02:22 PM
Join Date: Jan 2006
Location: USA
Posts: 3,497
Received 1 Vote on 1 Post
Hey Johnny - nice name.

Tile slab doesnt need to be level, but it should be fairly flat. It should be out no more than 1/4" in 10'. It will be difficult to use 12" tile on a sloped floor like this.

Do you have a water problem and is this sloped floor and drain part of the solution? How will flattening the floor affect your water drainage problem?

You could level this floor but it wont be cheap. You could level the slab with a self leveling compound.

Since you have some minor cracking, you may also want to use an isolation membrane over the slab. As long as the hairline cracks do not have one side of the crack higher than the other you are probably ok.

Put water on various areas of the slab to make sure that the slab will absorb water.

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
Display Modes
Ask a Question
Question Title:
Your question will be posted in: