Quote Originally Posted by Bidja View Post
I prefer to fix T&G 19mm flooring to timber battens or joist spaced at 450mm centers. Another method for laying timber flooring over your existing tiles is to use ply sheeting. The sheeting is laid over the tiles to create a good surface for the timber flooring to be laid on. Thickness to suit desired finished floor level. The floorboards are then glued and nailed to the ply. Use a polyurethane sealant / adhesive like Sikaflex 11FC or what I have used is Bostic Seal N Flex1. Great for fixing plasterboard to masonry as well.

https://www.bostik.com/australia/Bos...ethane-Sealant
Yeah ply or Yellow Tongue chipboard works great. 450 centred Battens will be great straight on the concrete will feel and sound solid too.