Insulating cold bedroom not in building envelope
My wife and I recently bought a brick, 1925 Victorian twin in Philadelphia. It has 3 floors + attic, but the 3rd floor and attic spaces do not extend over the top of the bedroom at the back of the house. We are planning to use this room as our main bedroom but it is significantly colder than the rest of the house.
I’ve been reading as much as I canon GBA and many other site and online videos, but I am at a loss to know how to improve the comfort level in the room.
There is no wall insulation as far as I know and the walls I believe are plaster (with the possibility of some drywall patching replacement.
I think I understand why it is so cold as the room (ceiling/ roof and 2 exterior walls) are basically outside the building envelope (please forgive me if this is the wrong terminology). i’m also assuming it will be a sweat box come summer (although we are lucky to have central air!)
Short of ripping the walls down to add interior insulation, which I am not sure is even a good idea based on many things I have read online, I don’t know if the situation can be improved. I am attempting to air seal as much of the rest of the house as I can from the basement up (which is a task unto itself as actually accessing the rim joists is near impossible due to all of the pipes and wiring added throughout the years.) adding additional insulation to the attic will hopefully help the rest of the house.
Do we just grin and bear it, or is there something practical that will not break the bank that can be done?
GBA Detail Library
A collection of one thousand construction details organized by climate and house part