Wood-Engineered flooring on Concrete floor

[sanjayp]

I have a concrete floor in my lounge and passageway. It has a liquid DPM painted onto the surface of it and also solid black vinyl tiles ontop of that. The vinyl tiles are breaking away at various points around the edges where carpet grippers were nailed through them.

I now wish to remove the carpet and install a wood engineered floor. I plan to have this floating ontop of the vinyl tiles. My questions are:

1) do I need to replace the broken vinyl tiles at the edges of the room or can I simply intall the floor ontop (there will be a drop of a few mm at the edges of the broken tiles where it becomes concrete once I remove the broken fragments)

2) do I need some sort of a underlay given that most of the flooring will be on the vinyl tiles.

thanks
sanjay

 

[WoodYouLike]

1) do I need to replace the broken vinyl tiles at the edges of the room or can I simply intall the floor ontop (there will be a drop of a few mm at the edges of the broken tiles where it becomes concrete once I remove the broken fragments)

2) do I need some sort of a underlay given that most of the flooring will be on the vinyl tiles.

1) you can install the floor floating ontop ot the tiles, as long as the damaged tiles don't create a 'lift' in the floor.

2) yes, rule of thumb is to use DPM and sound-insulation underlayment (now available as a 2-in-1 product) on concrete/screed AND vynil tiled floors to prevent residue moist from concrete/screed and 'sweat' from vynil tiles going into the wooden floor.