Weep holes - vented rain screen principle

Structure · Masonry Veneer Walls · printed page 70 (PDF page 71)

Book index entries

Weep Holes Weep Holes – Vented Rain Screen Principle Weep Holes – in Brick Veneer Walls Brick Veneer Wall Masonry Veneer Wall Veneer Wall Veneer

Text in the illustration

foundation wall
perspective view
weep holes allow air into cavity (to equalize pressure) while allowing water to drain out
flashing projects slightly beyond foundation wall and extends up the face of the stud wall about 6" behind the building paper
sheathing paper protects wall from moisture and extends down to overlap bottom flashing
wall framing
air gap
sheathing
high air pressure
low air pressure
medium air pressure
floor framing
foundation
cross section

Generated explanation

The illustration shows a perspective view of a brick veneer wall and a cross section through its base at the foundation and floor framing. Weep holes at the bottom of the veneer admit air to the cavity to equalize pressure while allowing water to drain out. The section identifies high exterior air pressure, medium cavity pressure, and low interior pressure. An air gap separates the brick veneer from the sheathed wood framing, and sheathing paper overlaps the bottom flashing. The flashing turns up approximately 6 inches behind the building paper and projects slightly beyond the foundation wall to discharge water.

Components

brick veneer weep holes air gap base flashing sheathing paper wall sheathing wall framing floor framing foundation wall window

Materials

brick mortar wood concrete building paper

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