Laminated underlay

Deco99

https://www.screwfix.ie/p/roberts-laminate-wood-floor-foam-underlay-9-2m/7340h

https://www.diy.com/departments/duralay-3mm-laminate-flooring-glueless-wood-flooring-underlay-roll-7-5m/551316_BQ.prd

Big price difference. And I may get it cheaper again from builders providers but what's the difference in quality? I need for bedrooms which will have plywood subfloor and for over concrete sub floor. Don't want to skimp on quality but no need to overlay either

listermint

Ones foiled on bothem sides adds to expense. Foil back is for heat retention via reflection. Unless you need that don't buy it.

theteal

Most of the places I've looked into, the foil is described as a damp proof membrane moreso than thermally related. Also I went for thicker underlay to add to sound absorption in bedrooms

Very similar to this in fact

Deco99

Still confused.

Have this for bedrooms which has plywood subfloor

https://www.woodies.ie/whiteriver-15-sq-m-white-pe-foam-underlay-1068448

But have a concrete subfloor in one area of house and am struggling to find appropriate underlay. It's not underfloor heating but everything I see refers to that and not just concrete alone. I read it needs a polyethylene layer?

https://www.mdoshea.ie/elka-comfort-lay-15m2-roll

ongarite

I've used the Elka comfort lay under quick-step laminate.
Not cheap but it's good stuff.
Flooring is quiet and sounds solid when walked on, if that makes sense.