On 7 Dec, 13:25, tvmo wrote:
I live in a Lovell-built semi-detached house, which was constructed in
2001.

A few months ago some smokers moved in next door. Since then we've
noticed the smell of smoke in the rooms that adjoin next doors house
(our kitchen, dining room and 3rd bedroom). I'm pretty sure that the
smoke isn't coming in through the windows.

Can anyone suggest where the smoke could be entering our
property? In


When I was doing some work and had floorboards up etc, I suddenly
realised I could smell the cooking and cigarette smoke from next door.
I noticed where the upstairs floor joists went into the party wall
there was some large gaps and old cement had fallen out etc. I fill
the gaps with expanding foam and the smell went away. There must have
been an air path through the wall !
The downstairs floor joists ran lengthways with the house, so no issue
there.
If 2001 build, I would have thought cavity party walls, but where
joists enter party walls is a likely place.
Also, fireplaces sharing chimneys - but not likely in a modern house.

addition is there any way I can confirm the smell we are
experiencing
is indeed smoke?

That's a tricky one.
Invite the neighbours round for dinner and give them a cabbage soup
starter, followed by bean casserole and home-made fig rolls, and see
if the smell changes !
Simon.