Underlay for Laminate Floor for concrete floors

LutonGuy

Hi guys, 
my house has concrete subfloors and I am looking to install laminate floors. 
My questions, 
- Do I need a DPM under the laminate floors? if yes, which product is good?
- Or will the normal XPS tiles will do?
- What is the best Thermal underlay on budget? 

I look forward to hearing from you. 

Many thanks

grumpy_codger

This depends on what concrete floor it is. Proper concrete floor has both the membrane and insulation under the concrete. Good concrete floor is suspended (beam&block).
IMO,  green 'wood fibre' underlay boards are the most budget option. 

FreeBear

grumpy_codger said: IMO,  green 'wood fibre' underlay boards are the most budget option. 

I used wood fibre underlay in my kitchen and a foam underlay in the utility room. There is a small difference in noise from footfall - The utility room being slightly quieter. In terms of insulation, norra lot in it. Certainly not at a level I can measure.

moneysaver1978

FreeBear said:

grumpy_codger said: IMO,  green 'wood fibre' underlay boards are the most budget option. 

I used wood fibre underlay in my kitchen and a foam underlay in the utility room. There is a small difference in noise from footfall - The utility room being slightly quieter. In terms of insulation, norra lot in it. Certainly not at a level I can measure.

Sorry to hijack, but are you saying that insulation on top of a concrete floor plus laminate flooring or LVT would make no difference?