Bathroom Floor


Old 01-28-13, 08:43 AM
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Bathroom Floor

Hey everyone - I have a bathroom that was roughed in when i bought my first house and finally getting around to finishing it. I have one question concerning the floor.

The cement floor has some area (where the pipes run) where the cement is roughed up a bit and not level. My question is, must this be repaired and smoothed out before putting a sub floor OR can i lay a sub floor over this and then put the tile down?

If I need to repair the cement, does anyone have any suggestions on a product to use to do this? More then likely will try to find something at Home Depot.

Thanks for any input!
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Old 01-28-13, 08:55 AM
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Welcome to the forums.

Can you give us some pictures?
Old 01-28-13, 09:06 AM
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Pictures of the cement floor
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Old 01-30-13, 07:48 PM
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Hi JD,

You can not install a subfloor on concrete. You'll need to fix the floor so it's very flat. Level would be nice too but not necessary if it's not practical.

The product to use depends on exactly what has to be done. There are patching cements for thin repairs, self leveling cements are sometimes indicated. For building a new base over the old where you can go 3/4" or more, we use deck- mud. It's not the most DIY friendly though.

Old 01-31-13, 04:12 AM
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You can not install a subfloor on concrete
Agreed, why would you think a subfloor would be necessary? Do as Jaz said and smooth out the concrete and apply your tiles directly on the concrete. Wood and concrete are not friends.
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