Roofing and Siding Blog

What is Roof Flashing?

February 24, 2026

Roof flashing is how a roof keeps water out at its most vulnerable points. Roof flashing is a thin, durable material installed at roof intersections, joints, and penetrations to prevent water from seeping into the roofing system. It is one of the most important components for waterproofing and long-term structural protection.  So, what is flashing…