Sealants For Your Windows

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Window seal failure is a common problem for aging windows. If you have large windows especially older ones then you are probably losing a lot of heat. The gaps in a window can let in the elements and end up raising your energy bills. There is a wide variety of window sealants available to insulate your windows. If you’re on the lookout for a window sealant, you may be wondering which products to choose. Each of these window sealants has its own benefits and challenges.

Tape Window Sealant

Tape window sealant is a simple peel and stick system that goes on fairly seamlessly. It can be used for small emergency repairs as well as for serious renovations. The tape is easy to fold into corners and if desired it can be plastered over immediately.

Tape Window Sealant

Caulking Your Windows

Caulking requires applying a long, narrow strip along the entire length of the seam and it takes a degree of skill. If you’ve never applied caulk before, it is probably a good idea not to make your first attempt in a highly visible area. It can be messy and time consuming if it is not done properly. Caulking is cost-effective and can last for years. It is also available in a large array of colors to match your windows.

Caulking Window Sealant

Putty Sealant

Putty provides a nice smooth finish perfect for touch ups. Window putty has been in use for hundreds of years and can last for decades. It is easy to work with and applies neatly.

Putty Window Sealant

Spray Foam

Foam is perfect for larger areas to fill gaps and can bond to most materials. It is designed to create a weather tight seal around your windows. Spray foam is impermeable to water and retains its insulating capabilities regardless of how wet it gets. It remains flexible and will not crack over time.

Spray Foam Window Sealant


Inspect the trim around your windows from both the exterior and interior of your home to assess your needs. Ensure your sealant application performs optimally by comparing the different kinds of options from Home Depot, Lowe’s and Amazon.

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