Self levelling onto self levelling

12 Feb 2017
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United Kingdom
hi all

I have just laid a self levelling compound onto my old kitchen floor. Some of the old low levels were as low as 25mm from the highest point so I bought 16 bags of 25mm (up to) latex self levelling compound. The area to cover is 16 square meters. I think I haven't put enough down as the floor still has dips in certain areas and I have 10 bags left which tells me I haven't laid it thick enough.

My question is; can I add another layer of the compound to try and straighten things out? I have 6mm underlay and 14mm oak floor to put over the floor.

Another question; I have a bitumen like paint to paint the floor before I lay the oak floor. Is it advisable to paint this over the self levelling?
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