We are about to move into a house (around 300 years old) where one bedroom
overhangs the lounge of the house next door by about 1 1/2 metres.
Previously, there was nothing in the roof space between the plasterboard
ceiling and (rotten) floorboards.
I had 2 main concerns: fire resistance and sound proofing.
After speaking to an architect, I placed a double layer of plasterboard in
the gap and then filled and sealed this with between 5ml and 15ml of
Now, this has done a reasonable job of cutting out the worst of the noise
and I am a lot more confident a fire would not now simply come straight
However, there is still sound coming through and I wonder if there is
realistically anything worth doing in the maybe 2" gap I have left to play
with? (I am next going to replace the floorboards and we will be carpeting