Even if it doesn't land on a wall tie, it can drop to the bottom and bridge across the damp-proof courses at the bottom of the wall, creating a similar bridge but in this instance appearing like rising damp.
Please remember it isn't either or, damp-proof course or plaster, it's both and don't try to save money by not doing the plasterwork.
If in doubt, you should replace the damp-proof courses
before you reset the window.
The answer was to incorporate a damp-proof course
in the floor but this would involve digging up and relaying the concrete.
These trays are basically damp-proof courses
, but at high level.
This is done by damp-proof courses
called cavity trays manufactured for this purpose.
Also they tend to have pieces of timber built into these potentially damp walls without any isolation by damp-proof courses
to stop them getting wet.
Our older homes, pre-1930s, rarely have damp-proof courses
to isolate the timbers from the damp supporting brickwork.
Houses constructed post-Second World War should be adequately protected by damp-proof courses
built into the main supporting walls as well as the short walls supporting the ground-floor joists.
Roofs, gutters, flashings, patios, gardens and in some instances damp-proof courses
are all critical in determining the overall condition of our buildings.