A brick sill should project outward from the face of the wall. This ensures that water dripping off the sill falls clear of the wall below, rather than running down the facade and staining the masonry.
To ensure a well-designed and installed brick sill detail, follow these best practices: brick sill detail
The brick sill detail is crucial to prevent water infiltration and damage to the building's structure. A poorly designed or installed brick sill detail can lead to: A brick sill should project outward from the
“Brick sill flashing: pre-finished 0.040” aluminum, sloped 1:4, with integral end dams, extended ½” beyond brick face and bent down 30°. Weeps at 24” o.c. Maintain 1” clear air cavity behind brick.” A poorly designed or installed brick sill detail
This is the most commonly missed detail in modern construction. On the underside of the projecting sill, there should be a groove or notch known as a or drip edge .
A sill is essentially a roof for your wall. Beneath the sill material, you must install through-wall flashing. This membrane catches any water that gets through the brick or mortar and directs it to the weep holes. Without this, water saturates the wall cavity.