self levelling compound on top of liquid dpm

23 Jun 2010
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United Kingdom
Hi i wanted to know can you put self levelling compound on top of liqiud dpm also can you name a few.
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Yes you can.

It is always advisable to use products from one manufacturer as they will be compatible.

I usually use F.Ball products although I have used Sika products.

They both have excellent technical departments if you need further advice.
Thanks for the reply. Just one more thing, after i put liquid dpm on the floor do i need to put sand on the L.dpm before i put the self levelling compound down or can i just put the self levelling compound down directly on top of the L.dpm.
Depends on the liquid DPM used. As Flooringman says, call the tech department.
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It's not a good idea to put sand over the top of it. The sand could bridge between the floor and the dpm and allow damp to get through. Use a good neoprene primer like Balls P131 and the smoothing underlayment will bond just as well.

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