For steam pipes, use either a fiberglass wrap or molded fiberglass pipe insulation. The next stop on our weatherization tour is to weather-strip the windows and doors. Weather stripping material comes in four kinds. Spring plastic comes in a peel-off strip. Spring bronze is durable and makes a smooth surface for doors and windows.
Rope caulk is a putty-like material for windows only.
Door sweeps are installed at the bottom edge of an exterior door. If you have casement windows, weather-strip all four sides of the sash. Cover the sash cords with plastic covers or rope caulk. For any exterior doors, weather-strip around where the door closes against the frame and install a door sweep to the bottom. Next, inspect the walls for any cracks and adequate insulation.