What is step flashing?

Step flashing is a type of flashing used to prevent water from seeping into the joints and corners of the roof and walls of a building. It is typically installed in a step-like pattern on the roof or wall where two surfaces meet at an angle, such as a roof and a wall or a chimney and a roof.

Step flashing is usually made of metal, such as aluminum, copper, or galvanized steel, and is designed to direct water away from vulnerable areas and down the roof or into the gutters. It is important for preventing leaks and water damage in these critical areas of a building.

Proper installation of step flashing is essential to ensure its effectiveness. Each piece of step flashing should overlap the previous one and be properly sealed with roofing cement or other appropriate sealant. It is also important to make sure that the step flashing is securely attached to the roof or wall to prevent it from coming loose in high winds or severe weather.

Overall, step flashing is an important component of a watertight building envelope and plays a crucial role in protecting a building from water damage. Proper installation and maintenance of step flashing can help prolong the life of a building and prevent costly repairs.