Bulging of plaster due to creep in wood-frame walls

Interior · Ceilings · printed page 356 (PDF page 357)

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Plaster – Bulging Due to Creep in Wood-Frame Walls

Text in the illustration

cause
repair
step 1: cut out affected area, angling inward
keys break off and plaster bulges
step 2: reapply 3 coats of plaster (wire mesh lath is sometimes added)
alternative: flat head wood screws and plaster washers, covered with tape and drywall patching compound

Generated explanation

The illustration compares bulging plaster on a wood-frame wall with a cutaway showing its repair. On the left, plaster keys have broken off behind the wood lath, allowing the plaster face to bulge outward. On the right, the affected plaster is cut out with inward-angled edges, exposing the horizontal wood lath. The repair is shown as three reapplied coats of plaster, with a note that wire mesh lath is sometimes added. An alternative repair is annotated using flat head wood screws and plaster washers covered with tape and drywall patching compound.