How strong should the impact sound insulation be chosen for 8mm laminate

Hello,

after a long search, we have decided on a laminate that we like. It is 8mm thick laminate, class 32 (suitable for commercial use and heavy private use, or something like that). Furthermore, a foil will definitely be laid on the floor, which is intended to serve as a vapor barrier (0.2mm). Laying this foil was recommended to us for the new building.

Now we still have the question of how thick the impact sound insulation should be. We are considering between 3mm and 5mm. However, I wonder if you can notice the difference (no underfloor heating).

We are very grateful for any opinions.

do you mean cm or really mm? What about the rest of the floor construction?

I am talking about mm. On the ground floor there is cement screed, on the upper floor concrete, which is ready for installation (smooth)

So the impact sound insulation of concrete is moderate (we tried it before the screed and insulation were installed). Even with 4 cm of impact sound insulation and 7 cm of screed, we hear the children when they are stomping madly / running in a race (very pronounced heel strikers). Without underfloor heating and with laminate flooring (we have tiles) it is of course a bit different - still, I doubt that laminate with 3 mm impact sound insulation is that great. I would just try it: buy both thicknesses and lay down some laminate / impact sound insulation and stomp away and listen (might sound silly, but then you have it live).

Just google KORK-PARKOLAG E. It can also be used simultaneously as a vapor barrier if the joints are taped with an aluminum-coated self-adhesive tape (50 mm wide). The difference is noticeable compared to conventional underlays. However, the price per square meter is about 4.60 euros.

At our trusted laminate dealer, they had laminate stretched into small frames with a single layer of insulation underneath and once a thick one (don’t ask me how many mm). You could then drop a golf ball on it. The difference was really huge. Better a bit too thick than too thin.