I moved into a 30 year old house this fall. The bedroom at the front of the house is colder then the others. Two sides of the room are brick exterior walls vs siding. I was in the attic running cable for a poe camera and noticed the brick wall.
Not sure if this is the cause of the cold room but the top of the brick wall is exposed? From what I have read air gaps are required. I could not find anything referring if the air gap should be sealed?
Best Answer
No. The wall insulation is presumably inside the framed wall, behind the asphalt felt we see here. The brick is outside the building "envelope". It has no involvement with insulation.