To reduce energy lost, seal all window edges and cracks with rope caulk. This is the cheapest option. Windows can be weather stripped with a special lining inserted between the window and the frame.

How to choose the right type of caulk As you examine your home, check the caulking on the inside and the outside of the window. The location determines what type of caulk you’ll need.

Exterior caulk is designed to seal seams in windows, doors, siding, gutters, brick, concrete, and roofing tiles to ensure that a home remains waterproof and pests stay out. The best outdoor caulk ...

A–Your simplest and least-expensive solution is to caulk around the edges of the storm window with a rope-type caulking material that you can buy in most hardware stores and home centers. It’s ...

Just be careful. You want to use real, 100-per-cent silicone caulking, not one of the new “siliconized” caulkings that are out there. They won’t work nearly as well in this application.

Window caulking is a fairly easy project, but it’s important to know the do’s and don’ts of window caulking so the job is done correctly the first time.