Does Foam Tape Work to Seal Windows?

Inspect Windows and Frames

• Before weatherizing windows to reduce heat and cooled air loss, conserve energy and save money, homeowners must inspect windows and window frames. Make sure windows work properly by opening and closing them, checking to see if they are installed correctly and whether there the windows or frames have any damage. Conduct a thorough inspection, noting the number and size of any gaps around windows, tightening any hardware that may need it, such as hinges or slides, oiling any sticking parts and replacing broken parts or surrounding framing. If frames require replacement, consider adding insulation underneath them before attaching new framework.

Types of Foam Tape

• Neoprene foam rubber tape, ribbed foam rubber tape and vinyl foam tape are types of foam tape used in weatherproofing. They are flexible, adapt to compression, are good insulators and are usually adhesive, making them easier to apply than other weatherproofing materials that are nailed or stapled into woodwork. Foam tape comes in different widths and thicknesses to use in a range of window and door weatherproofing situations.

Durability of Foam Tape

• Foam tape is not a permanent solution and must be replaced often. The tape wears quickly, deteriorating when exposed to moisture and heating and freezing, or friction and abrasion. It should be removed and replaced every couple of years, or at the beginning of each summer and fall season.

Where to Apply Foam Tape

• Foam tape to weatherize windows must be applied so it doesn’t interfere with the opening and closing of window panes. Common places to install foam tape in windows include inside the track of double-hung or sliding windows, around the inside window frame, and at the top and bottom of a window sash. Determine how much foam tape you need to complete the project by measuring around each window to be sealed, adding up the measurements and adding 10 percent.