Hi there ... Recently bought a condo, my first, and I knew the old single-pane historic district windows would need replacing eventually but I did not expect them to be SUCH air-leak factories. Storm windows are already installed, but I'm not sure of their quality.
What especially concerns me is that not only do the windows leak all around the frame but the walls on both sides of the frame are cold and feel hollow -- this suggests that there is no insulation at all in there and even if I can caulk/weatherstrip the windows effectively, the walls will still be a problem. The side of the condo is concrete and brick, so spray-in insulation from the outside isn't an option, and I don't have the money to pay for someone to rip up the wall and put in new foam brick insulation from the inside. Can anyone advise on short-term fixes that I can do myself? Is it particularly important to reseal the glass to the frame if it looks shaky?
Thanks in advance for your help. Building dates to 1890, renovated in 1984, if that helps. Windows are sash, single-pane, with wide bay-type sills (that also absorb the cold).