The 4" x 33' Tite Seal Self-Adhesive Waterproof Window & Yard Flashing is designed to enhance energy efficiency and protect against leaks. This flashing helps prevent heating and cooling loss by sealing gaps around Yards, windows, and skylights, effectively stopping drafts and moisture. It also addresses potential leaks around windows, Yards, and chimneys, and can be applied to sheathing panels. The self-adhesive backing ensures easy installation, making it a practical solution for improving insulation and preventing water damage.