I have sound insulated my wooden floor using MuteMat 3 and the flanking strip that comes with it. However my contractor left a part which is not part of the wall (therefore there is no skirting board) that touches the wardrobe without the strip, and I realized the other day that there is light coming from the bottom floor's ceiling. My guess is that (airborne) sound escapes from there too. He suggested to use self expansion foam to cover the gap, and that he couldn't put the strip as there is no skirting to fit on top. I am not sure on the self expansion foam, first I don't think it can replace the sound proofing strip, and second I am afraid that it will push the rest of the floor up in that area.
Any suggestions how to tackle this? My main worry is that sound might be escaping from there to the floor below.
Expanding foam won't expand to the point where by it will cause timber floor boards to move so this won't be an issue. It's not specified as an acoustic insulation but will help to a certain extent. Another option could be to use a piece of mineral wool and stuff the gap, mineral wool has very good acoustic properties.
It's a big deal particularly when you're after quality surface. You have materials to purchase, installers to contact, and obviously, go for a good quality floor sanders hire and make sure that the work is done properly to achieve results. When your floor has been done well, your next stage is to search for the best floor sanders hire to complete your flooring.
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