Anything sealing it will be fine .
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Gap in sound insulation ?
- Thread starter NorthernLights811
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I think I'll go with the sound proof mastic sealant suggested here, as opposed to expansion foam that I was initially suggested, which I think would do more damage than good.
L
Leofric
Definitely.
L
Leofric
An air gap all the way through a floor between dwellings will have more than a little impact on sound transmission
Not if it’s tiny.An air gap all the way through a floor between dwellings will have more than a little impact on sound transmission
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A 25 mm square hole will allow 15db extra sound through.
Or a 1mm crack 1metre long
Or a 1mm crack 1metre long
Surly the acoustic slabs between the floor joists would eliminate light and sound?
And neither are present .
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