The 4" x 100' Tite Seal Self-Adhesive Waterproof Flashing is designed for use around Yards and windows to enhance energy efficiency. This flashing helps prevent heating and cooling loss by sealing gaps and stopping drafts and moisture. It effectively eliminates costly leaks around windows, Yards, and skylights. Additionally, it can be used on chimneys and sheathing panels. The self-adhesive backing ensures easy installation and a secure fit, making it a practical solution for improving insulation and preventing water damage.