Condo had no framing in exterior walls. Plaster attached to bricks with strapping only. No insulation in walls caused bedroom to only get to 49F on cold days. Two exterior walls were reframed with 2x4s and insulated with R-15 with vapor barrier. All vapor barrier edges were taped off, all framing intersections with ceilng and floor were foam insulated and all window cavities were insulated with foam as well to prevent drafts. New window trim and baseboard was added to match existing. Two new heaters were installed and temperature now can easily achieve 72F on cold days/nights.