Vent Holes In Brick Walls

Plasted or painted brick veneer.

Vent holes in brick walls.

Weep holes in brick walls provide rain screen drainage definition explanation of brick wall weep holes or weep openings. The brick and blocklayers federation recommends that where windows exceed 2 4m in length that 1 or 2 vent holes are evenly spaced under the sill. This article discusses ventilation in the cavity behind brick or other masonry walls in veneer wall construction and the use of intermediate and wall top air vents or intermediate drains in some veneer wall designs. The small vertical slots near the bottom of brick walls are known as weep holes and are used to allow any moisture from condensation to drain out of the wall as well as air to circulate.

This means the need to have air circulation to dry. In this case the drainage and ventilation of this large brick wall is left to 30 small weep holes spaced at 2 foot intervals along the bottom course of the wall. The futility of trying to ventilate the cavity space behind the brick wall thru weep holes is illustrated by the following example. Homeowners drill holes in brick walls for a variety of reasons including running cable electrical wires or pipes through the wall.

Where a brick veneer is plastered or painted the brick veneer exterior cladding is effectively a waterproof system. This article explains the purpose of drainage openings rain screens in solid brick walls and in some brick veneer walls. While you should never fill weep holes with solid material such as caulk wood or mortar you can put strips of fiberglass screen wire or scouring pad in. Brick wall weep holes and recommends their use in.