Cavity Drainage

Cavity drainage systems are your brick wall's hidden defense against water damage, channeling moisture that penetrates the outer brick layer safely to the exterior before it can cause structural damage or mold growth. Modern cavity walls include an air space between brick veneer and interior walls, with weep holes at the base allowing water to escape—a critical feature for Ontario's wet climate. When drainage systems fail due to blocked weeps, missing flashing, or mortar droppings in the cavity, water accumulates causing efflorescence, interior moisture, and accelerated deterioration. Regular inspection should check that weep holes remain clear and flashing directs water outward at windows, doors, and floor lines. Retrofitting drainage in older solid masonry walls involves installing drainage mats, through-wall flashing, and new weep systems. Fix My Brick ensures cavity drainage functions properly, clearing blockages and installing proper flashing to protect your home from hidden water damage that can cost thousands to repair.