ᐅ Is Impact Sound Insulation Necessary in the Basement?

Hello everyone,

In my basement (partially above ground, partially underground) I have a 50m² (540 sqft) party room that I want to cover with laminate flooring. Under the screed there is underfloor heating and thermal insulation panels. The laminate itself will be an inexpensive 7mm (0.3 inch) version from the store’s own brand.

Does it make sense to install impact sound insulation? There is no living space below the basement, and the screed is already decoupled by edge insulation strips. It would also improve the heat transfer of the underfloor heating. Or would the sound inside the room become unpleasantly loud because of it?

Did the basement itself already receive impact sound insulation during construction?

If so, the impact sound insulation placed under the laminate flooring serves only to prevent the "grinding of sand grains" noise.

Structure:

- Ground slab
- 12cm (5 inches) thermal insulation boards
- Underfloor heating
- 6cm (2.5 inches) screed

Reini1234 schrieb:

Does it make sense to install impact sound insulation?

No, impact sound insulation is meant to reduce the transmission of noise (from footsteps) to the floor below. Save your money; earthworms won’t be bothered by your stomping.

How loud the noise from your footsteps sounds inside the room depends on the material you install. Just glue down inexpensive vinyl flooring. Floating laminate flooring always sounds "loud" inside the room.

Ok, thanks.

Vinyl flooring is basically not an option for me, especially not when it costs less than 10 EUR per square meter (1 square foot).

Reini1234 schrieb:

Vinyl is absolutely not coming into my house, especially not at less than 10 EUR per square meter.

I can understand that (regardless of the price). It was more about the fact that the glued-down method is the "quietest" option.