How to Use Weather Stripping to Seal Gaps Around Doors and Windows

Many older homes and even newer homes have numerous cracks, holes and gaps through which warm air escapes in the winter and unwanted hot air enters in the summer, resulting in higher energy bills. According to estimates, these gaps are responsible for up to 30% of a home’s heating and cooling costs. By filling these gaps, you can save money and make your home more comfortable. Weather stripping is a simple, inexpensive way to seal these air leaks around doors and operable windows. It is typically used in conjunction with caulking, to provide a tighter seal and reduce air drafts.

There are many types of weather stripping, from foam and felt to vinyl and metals. The best type for your home will depend on the size, material and durability of the gap, and the conditions it will be exposed to. Foam, sponge and felt are good choices for bridging small gaps and low temperatures, while rubber and vinyl provide excellent durability, resistance to corrosion and moisture. Metals such as aluminum and zinc are more expensive, but have the advantage of lasting a long time without deteriorating.

The first step in installing weather stripping is identifying the areas where a draft is occurring. Start by checking the area around any door that leads outside, then move on to large windows. Check mail slots, dryer vents and the chimney as well as corners, external water faucets and the place where phones and cable lines enter your house. Once you have identified the problem areas, perform a walk-around check to see if any weather stripping is missing or showing signs of wear and tear.

Before you begin, check that the window or door will open and close easily before you apply the weather stripping. If it is not, you may need to replace the hinges or rehang the sash.

It is also a good idea to do a complete cleaning of the door or window frame before installing any new weather stripping. Remove any old adhesive by using an adhesive cleaner, and sand or scrape down the surface before applying the new stripping. You will also need to repair or sand nail holes and fill any cracked or chipped paint.

After deciding which type of weather stripping to use, make sure you have the proper tools for the job. You will need a ladder, shears, a utility knife or tin snips, and, depending on the type of weather stripping you choose, an electric drill or screw driver. Once you have the tools, begin by making a test cut to ensure it will fit. Next, measure the gap and mark the length on your chosen weather stripping. Finally, cut the piece to the desired length and attach it to the door or window frame.

If you are using a peel-and-stick type, it is important to follow the instructions on the packaging closely to avoid any problems. If you are using a more durable variety, it is a good idea to cut a few inches longer than needed, and to cut several strips at once so they will all match.