How Thick to Apply Floor Leveling Compound to a Subfloor

How thick a layer of self-leveling floor compound can you pour on a subfloor to level it? -Jack

Hi Jack,

It depend on the particular floor leveling product you’re using, but most manufacturers recommend that you apply no more than 1/8” thick coat of self-leveling or floor patch compound at a time. However, you can apply several thin layers of the compound, if you allow each to set the recommended time, to increase the thickness gradually up to 1/2” thick.

Be sure to read the application instructions for your particular floor compound to find out more.

Good luck with your project,


Further Information


  1. The Ardex line of self leveling floor compounds range include up to a depth of 5 in. with the addition of appropriate aggregate.


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