Render / Stucco

Render / Stucco covers exterior cement-based finishes that protect walls and make them look good for years.

I write about substrate prep, lath and base coats, mixing, application techniques, control joints, curing, waterproofing details, and patch repairs. You’ll also see guides on diagnosing problems like cracking, hollow spots, moisture damage, and delamination.

If you’re working on an exterior wall finish, start here—prep and detailing matter more than people think.

Closeup of red brick and mortar joints in wall

Caulk Pulling Away From Stucco: Why joints fail and how to rebuild them

Introduction Caulk pulling away from stucco happens when the seal between the joint and surface fails, allowing the caulk to separate from the wall. Common causes include movement in the building, sun and weather wear, improper surface prep, and using the wrong type of caulk. These gaps can trap moisture and worsen cracking, so addressing […]

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Worker applying stucco on cinder block wall outside house

Hollow-Sounding Stucco: Diagnosing debonding and choosing the right repair

Introduction Hollow-sounding stucco means the plaster layer is pulling away from the underlying surface, making a thump or hollow note when you tap it. This usually points to debonding or voids behind the stucco. If you hear it, start by confirming where the sound is strongest and what the visible signs are. Use plain, practical

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