ᐅ Timber frame construction impact sound insulation upper floor

Hello everyone,

I need your advice regarding impact sound insulation. We are in the final stages of planning. Our prefab house provider has planned a floor heating system panel 30-3 as impact sound insulation under the screed on the upper floor.

Alternatively, they offer a 30-5 mineral-based impact sound insulation board.

This would improve the soundproofing of the ceiling.

The additional cost is around 500 euros.

Is it really worth switching to the mineral insulation for impact sound, or is it better to neglect it since the improvement is minimal and invest the money elsewhere?

The children’s rooms are on the upper floor, so we are considering this carefully.

Thank you very much

Sky

Skyfire schrieb:
Alternatively, they are offering us a 30-5 mineral impact sound insulation board.

I am only familiar with loose-fill materials for impact sound insulation (just search online for impact sound insulation loose-fill, several well-known names will come up).

But why don’t you visit a show home from your manufacturer with your children and, after coordinating with the sales representative on site, have the kids make some real noise upstairs—running, jumping on the floor, and so on? That way, you can directly experience how effective the standard impact sound insulation is. Ideally, they might also have a show home with the improved impact sound insulation for comparison or at least provide measurements of the decibel levels achieved.

I am relatively new to this supplier. The planner didn’t have any measurement data available, and there isn’t a show home with the new insulation board yet.

Supposedly, the mineral insulation board should improve impact sound insulation.

I just have no idea if it’s really much better than the polystyrene.

In principle, I don’t think it makes that much of a difference.

Hi,

so we have 25 cm (10 inches) thick stone wool insulation in the ceilings (from below) and standard polystyrene panels (17 cm (7 inches), consisting of one 10 cm (4 inches) and one 7 cm (3 inches) layer) between the ceiling and screed above. We find the noise level really okay and comfortable. And that’s despite having laminate flooring upstairs ^^

Our kids aren’t the quietest, but apart from actual jumping and hopping, you can’t hear anything from normal walking down here.

Maybe this helps you a bit 🙂

We are far from that!

We will have 65mm (2.6 inches) of floating screed on top, 30-2mm (1.1 inches) impact sound and underfloor heating panels, and 30mm (1.2 inches) EPS.

In the ceiling, we will have 100mm (4 inches) of mineral wool, covered underneath with 12.5mm (0.5 inches) gypsum plasterboard.

I’m quite uncertain about this since I was told that the mineral insulation board is supposed to be effective.

From a purely physical standpoint, mineral insulation is unlikely to provide much impact sound insulation.