Basement OSB subfloor over concrete

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Old 04-28-16, 02:21 PM
G
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Basement OSB subfloor over concrete

Hi
I'm renewing my basement, just finished up drywall walls and ceiling and I'm currently trying to figure out what to do with the floor. I want to put laminate or vinyl planks but the floor is a little uneven and it's concrete. I did a lot of research and I'd skip the self leveling compound to even it out. So, I'm considering to put down OSB as a subfloor with a vapor barrier underneath and than screwing it down in the concrete to have a nice, smooth and flat floor to install the laminate or vinyl planks on. Do you think this would work? Could I use 1/2" OSB or is it really necessary 3/4" and why??
I'm posting a pic of the concrete so you get an idea of what I'm talking about. Thanks for the insights.

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Old 04-28-16, 03:17 PM
J
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#1, Floor issues should have been addressed before doing anything.
What your suggesting is just a bad idea.
OSB will just follow the contours of the floor.
How old is this home?
Any moisture issues.
Moisture test been done on the floor?
 
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Old 04-28-16, 04:13 PM
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Welcome to the forums.

I did a lot of research and I'd skip the self leveling compound to even it out.
I wouldn't. The self leveling concrete, although is a little messy to work with, does a great job in leveling an uneven concrete floor.
 
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Old 04-28-16, 04:49 PM
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To interject on other parts of your post, you do not want to put OSB directly down on concrete, even with a vapor barrier that you plan on shooting a kazillion holes through. The roughness of your floor dictates the use of SLC to make it viable.
 
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Old 04-29-16, 12:37 AM
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Okay. Bad idea. I'll go with SLC and than vinyl planks. Does that sound right? Thanks for the replies!
 
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Old 04-29-16, 04:13 AM
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I think that is a good option. The vinyl planks will serve you well in the basement. Some laminates are not recommended for below grade, anyway.
 
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