Anchored brick-veneer wall section — air space, WRB, ties, flashing, and weep holes

Brick veneer is a non-structural skin hung on ties over a 1″ air space, not a load-bearing wall. Rain that gets behind it runs down the WRB onto the base flashing and out the weep holes — so never seal the weeps.

A vertical section through an anchored brick-veneer wall. From outside in: a single wythe of brick, a 1-inch air space, a weather-resistive barrier over the wall sheathing, and the stud backup wall. The brick is non-structural — it carries no house load and hangs on corrugated metal ties spaced about one per 2.67 square feet (roughly every 16 inches). At the base, flashing runs up behind the WRB and out under the first course, and weep holes in the bottom course let water escape. Water that gets behind the brick runs down the WRB onto the flashing and out the weeps, so the wall is a drained rainscreen and the weeps must never be sealed. — Source: IRC R703.8 (anchored masonry veneer); BIA TN 28

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A vertical section through an anchored brick-veneer wall. From outside in: a single wythe of brick, a 1-inch air space, a weather-resistive barrier over the wall sheathing, and the stud backup wall. The brick is non-structural — it carries no house load and hangs on corrugated metal ties spaced about one per 2.67 square feet (roughly every 16 inches). At the base, flashing runs up behind the WRB and out under the first course, and weep holes in the bottom course let water escape. Water that gets behind the brick runs down the WRB onto the flashing and out the weeps, so the wall is a drained rainscreen and the weeps must never be sealed.

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  <a href="https://remodelcalculators.com/construction-diagrams/brick-veneer-wall" target="_blank" rel="noopener">
    <img src="https://remodelcalculators.com/api/figure-embed/brick-veneer-wall" alt="A vertical section through an anchored brick-veneer wall. From outside in: a single wythe of brick, a 1-inch air space, a weather-resistive barrier over the wall sheathing, and the stud backup wall. The brick is non-structural — it carries no house load and hangs on corrugated metal ties spaced about one per 2.67 square feet (roughly every 16 inches). At the base, flashing runs up behind the WRB and out under the first course, and weep holes in the bottom course let water escape. Water that gets behind the brick runs down the WRB onto the flashing and out the weeps, so the wall is a drained rainscreen and the weeps must never be sealed." width="800" height="500" style="width:100%;height:auto;border:0" loading="lazy">
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    Diagram: <a href="https://remodelcalculators.com/construction-diagrams/brick-veneer-wall" target="_blank" rel="noopener">Anchored brick-veneer wall section — air space, WRB, ties, flashing, and weep holes</a> — courtesy of <a href="https://remodelcalculators.com" target="_blank" rel="noopener">RemodelCalculators.com</a>
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