Home DIY

The ex-tenants had all the windows locked shut, double glazing with no trickle vents, laundry drying everywhere and the heating on full blast.

I'm making an assumption that these factors, when combined, led to condensation forming on the inside of the external walls.

I am planning on fitting trickle vents, and maybe even opening a window now and then.

Am I mad?

If there is interior related damp inside the external walls, there must be some way it got in there. Such as a interior wall vent.

Wherever this hypothetical damp came from, if its inside the wall cavity you just need an air brick on the exterior wall to get it out.

Piece of piss to do. Chop out the brick with a hammer & stone chisel. Wack some mortar in, and slide the air brick in place.

• I am not an expert on this. Done a short course in bricklaying. Maintained a house and built a large condensation free animal pen recently.