Size the storm window frame three-quarter inch smaller than the window opening to leave room for foam weatherstripping to hold it in the opening. For the simplest construction, use 1-by-2-inch lumber.

— Dennis F. Dear Dennis: Installing exterior storm windows can be a wise choice for some homes, but they aren't an alternative to replacing old, leaky defective primary windows.

First, storm windows, if sealed well, reduce air leakage around your existing windows. Second, they create an additional insulating dead air space over your window.

Dear Jim: I want to install some exterior storm windows, but the prices are over my budget. I have more time than money now, so I could make them myself.

Dear Jim: I have double-paned windows, but I think it would still help to add some storm windows. I am planning to make them myself. Are interior or exterior storm ...

Interiors -- intended as a seasonal measure -- seal off the windows they cover for as long as they stay in place (usually a period of months). Track styles: Whereas interior storm windows comprise a ...