I have 2 of these in my upper level external wall. The external walls are solid block construction.
I may as well leave the window wide open. The amount of air that gets sucked through these is crazy and in the cold weather makes you not want to go in the room at all.
I understand they are there to help reduce the potential for damp but in a well heated modernized house can they be bricked up. I am insulating all of the external walls and think it will be a waste of time if i leave these 2 open.
I may as well leave the window wide open. The amount of air that gets sucked through these is crazy and in the cold weather makes you not want to go in the room at all.
I understand they are there to help reduce the potential for damp but in a well heated modernized house can they be bricked up. I am insulating all of the external walls and think it will be a waste of time if i leave these 2 open.
