advice please: tongue and groove boards onto chipboard floor

[quatro]

....this is what I would like to do in my kitchen. I can get hold of some nice floorboards and would like to lay them on top of the original 'chipboard on joist' flooring before the new kitchen is installed - should I nail them down or screw them down and any membrane needed?
Any tips very welcome.....

 

[WoodYouLike]

How wide is the kitchen? If not wider than 5 - 6 meters install the floor 'floating' on 2 - 3mm sound insulation. Glue the T&G's and presto, job done

 

[quatro]

The kitchen is a small one - 12'x11' approx. Thanks for the advice, I just know I don't want to use glue on the underside of the T+G boards and am wondering if the boards will bend if they are glued at the grooves and floated?

 

[WoodYouLike]

Not if the boards are of acceptable quality. We use the floating method most of the time without any problems.