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Using self-leveling quickrete in large space

2K views 4 replies 4 participants last post by  Bud Cline 
#1 ·
I have a concrete subfloor in the basement that is uneven. I would estimate maybe an inch or more difference throughout and there are a lot of peaks and valleys. It's about 200 square feet. I want to lay tile but would like to level the floor. Is self-leveling slurry the way to go before starting to tile? Should I split up the room into sections before pouring and how? Is there a better solution? Thanks for the help.
 
#4 · (Edited)
Sorry, I stopped typing in my first post and didn't finish my point. Ditra is an uncoupling membrane that goes over the substrate, set in thinset. It would be a good idea for a patched/filled floor such as this.
Self leveling flowable concrete could be poured before placing it to level irregularities in the floor. Klein, just be sure that the mix you buy is intended for higher water content and the thickness (or thin-ness) you intend to pour. It isn't something you can do with regular sack-crete, but there are bagged mixes available. Too much water in regular concrete mix will destroy the strength.
 
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