Half wood/half concrete kitchen floor - Laying vinyl

[JacobSladder]

Following the integration of our lobby/utilty area into our kitchen (which required raising the floor), I now have a level floor of which half is wooden floorboards. These butt up against the new raised concrete floor and the two surfaces are level. However I want to lay vinyl throughout and whilst I can lay 4mm plywood on the wooden floor, I want to continue across the concrete so I still have a smooth surface.

I appreciate I will need to lay a thin damp membrane on the concrete, but how should I fix the plywood to the concrete? I thought about some form of glue, or even masonry pins?!

New kitchen arrives Tuesday so any help will be appreciated!!

Thanks

 

[mattysupra]

plywood is for wooden bases not concrete. You need to use levelling compound on concrete and flexible levelling compound between the two different subfloors. (plywood to concrete)