Leca and self-leveling compound for wooden intermediate floors (soundproofing)
Living in an old farmhouse from the 1800s where an upper floor was built around 1970. The floor between the stories consists of beams visible from the ground floor. On these lies tongue-and-groove wood, 28 mm I believe. Then there's 45 mm insulation and battens, and finally a tongue-and-groove subfloor of 22 mm. So this gives an inter-floor structure of about 10 cm with 45 mm insulation. Two small children running upstairs can be heard quite clearly, to put it that way.
Currently renovating one of the rooms and will break up the top tongue-and-groove floor and remove the battens and insulation. This is mainly because it slopes disturbingly much to one side. The idea was to rebuild it similarly, but straighter. I don't want to build a thicker floor structure.
Now I've started considering alternative filling materials. I've understood that some weight is desired in the construction to dampen footstep noise? I've previously used lightweight aggregate mixed with leveling compound for filling a concrete floor structure. It became very hard and rigid. Maybe it could work here as well? 5 cm of such a mixture would be about 22 kg/m². I'm not worried about the strength as there are walls under the room being renovated.
Or EPS concrete? I've never used it myself. Weight-wise similar to lightweight aggregate/leveling compound, but does it get as hard? It probably requires a layer of leveling compound as well?
Furthermore, the plan is to lay chipboard with underfloor heating over it.
Currently renovating one of the rooms and will break up the top tongue-and-groove floor and remove the battens and insulation. This is mainly because it slopes disturbingly much to one side. The idea was to rebuild it similarly, but straighter. I don't want to build a thicker floor structure.
Now I've started considering alternative filling materials. I've understood that some weight is desired in the construction to dampen footstep noise? I've previously used lightweight aggregate mixed with leveling compound for filling a concrete floor structure. It became very hard and rigid. Maybe it could work here as well? 5 cm of such a mixture would be about 22 kg/m². I'm not worried about the strength as there are walls under the room being renovated.
Or EPS concrete? I've never used it myself. Weight-wise similar to lightweight aggregate/leveling compound, but does it get as hard? It probably requires a layer of leveling compound as well?
Furthermore, the plan is to lay chipboard with underfloor heating over it.
Have been having the same thoughts. It's the weight that's the drawback. What can the beams, which in my case are quite sparse, handle? In my case, it ended with regular mineral wool, and I guess I'll have to live with a bit of sound transmission between the floors.
