I've purchased a nice 2 1/2 story brick fixer-upper with plaster walls in SE Nebraska. I see what looks like old dust type insulation in the attic, but most walls have no insulation... The house has a boiler and radiators in each room.
I'm wondering if I need to add insulation on top of the stuff in the attic, or just smooth it out again (high and low spots). Do the exterior walls need insulation?
How should I address insulating the windows with weighted pulleys?