I have a side access of my home and the next door have a structure adjoining my property line. It was approved many years ago so it is legal. I want to put a wall against their wall (see pic) and seal it in (from the gutter down to the ground)
. The dank smell from their garage is pretty bad and I want to seal it off as my house is about 1m away.
Be great if anyone has suggestions on how best to do this.