Material available at a large home improvement retailer designed to create a weather-resistant seal around a window installation. It is typically made of flexible materials like aluminum, vinyl, or rubberized asphalt and is applied to bridge the gap between the window frame and the surrounding wall, preventing water and air infiltration. As an example, installers might use self-adhering modified bitumen membrane when integrating a new window into a building’s exterior sheathing.
Proper window sealing is vital for protecting structures from moisture damage, preventing mold growth, and enhancing energy efficiency. A well-sealed window reduces drafts and heat loss, leading to lower energy bills and a more comfortable indoor environment. Historically, various materials have been used to achieve this seal, evolving from simple caulking to more sophisticated engineered solutions that account for building movement and environmental factors.
