Opening Weeps

Chips Off the Old Block

and other ruminations about masonry by

Larry D. Jenks

Opening Weeps

Weeps should be inspected to ensure that they are open and appropriately spaced  (⁵ 24” on center maximum; 16” on center if cotton wicks or plastic tubes are used - BIA Technical Notes 7, page 5) so that moisture within the walls is able to escape to the exterior. If weeps are clogged, they can be cleaned out by probing them with a thin dowel or stiff wire. If the weeps were not properly spaced, drilling new weeps may be necessary. BIA Technical Note 7 outlines suggested types and spacing of weeps.

Since weeps are placed directly above flashing, care must be exercised to not damage the flashing when probing or drilling. The use of a stopper to limit the depth of penetration of the probe or drill bit may be effective in reducing the possibility of damaging the flashing where it turns up inside of the brick wythe.