Novice question about laminate underlay

[Steve3781]

Hi just found this site and thought i'd ask for help.

I've just moved into a new house and and my other half has decided she'd like a laminate floor in the lounge, but money is tight so to save a bit cash I decided i'd try and lay it myself. My problem is I'm unsure as to what underlay I need to fit, the floor is concrete covered with what look like vinyl tiles.

Any advice is very welcome

 

[Floorsave]

You need to make sure you have a built in membrane on the underlay, if cost is a worry there is a foam with a membrane built in which would keep your cost down