Through-Wall Flashing

Through-wall flashing is designed to prevent water from penetrating building envelopes by channeling moisture that enters the wall cavity to the exterior. Installed within masonry or cavity wall systems, it spans the entire wall thickness and extends outward, typically terminating with a drip edge. Its main function is to protect structural components from water damage and ensure effective drainage.

Features:

• Directs moisture from within the wall assembly to the exterior

• Installed within cavity or masonry walls for concealed protection

• Integral drip edge helps shed water away from the façade

• Essential for long-term durability of wall systems

Commonly Paired Flashings:

• Reglet Flashing – Used to terminate and cover the top edge of through-wall flashing

• Counter Flashing – Enhances water protection at wall transitions

• Weep Vents – Often installed with through-wall flashing to allow moisture escape

• End Dams and Corner Boots – Used with through-wall systems to contain water and prevent leakage at joints