Air brick do you install above or below the damp course.
I have found a small damp patch in one corner of the room wall. Now its starting to have black patches.informed its your air brick blocked? No damage to the out side wall or downpipe. Bit lost on this one.
Thank you
I have found a small damp patch in one corner of the room wall. Now its starting to have black patches.informed its your air brick blocked? No damage to the out side wall or downpipe. Bit lost on this one.
Thank you