Quote:
Originally Posted by solarsailor
Do you know whether the wall between the properties is a cavity wall? If it is and it's not already filled with insulation, then getting it done should at least alleviate the problem. Also, as it's a shared wall, talk to your neighbour about dividing the cost as the result would be in both your interests.
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It is almost unheard of to have a cavity wall between two properties.
Try chatting on this site diynot.com, it has loads of experts and professionals.
Lockdown has woken me up to the fact that the neighbours children are growing up, and the guy downstairs from me chooses to have internet chats in the middle of the night, and I consider myself lucky that we have concrete floors.
Good luck.