liquid dpm

23 Jun 2010
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United Kingdom
Hi i have a damp concrete garage floor and would just like to know do i put liquid dpm direct on the floor and then self levelling compound for nice finish or is it the other way round, also after the self levelling compound do i need to do anything else, please can someone tell me the process.
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Clean any dust or contaminents off the floor. If it is fairly smooth and even, then you can apply the DPM direct to the sub floor. If it is a bit rough or pitted you will need to lay a smoothing compound first. Make sure that you use a moisture tolerant compound, an acrylic latex such as F. Ball Green bag and stopgap 114 liquid. The DPM will need to be covered with a smoothing compound. Prime the cured membrane with P131 neoprene primer, again from F.Ball, allow it to dry fully and then apply a product called Stopgap 800 smoothing underlayment. Once dry this can be sealed or painted. It is designed as a wear coat. Most of the other smoothing underlayments are designed to be covered with a flooring. Hope this helps.

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