Cracks In Plaster Walls ~repack~ Jun 2026

Here’s how to read the cracks:

Plaster is porous. In older homes, lime plaster acts somewhat like a sponge, absorbing and releasing humidity. However, chronic moisture—whether from a leaky roof, a burst pipe, or rising damp—weakens the binders. Water dissolves the salts in the plaster, causing the layers to delaminate. Furthermore, moisture causes the wooden lath behind the plaster to expand and contract, pushing the plaster skin outward until it cracks. cracks in plaster walls

Beyond the immediate visual pattern, cracks are driven by three primary environmental factors. Here’s how to read the cracks: Plaster is porous

A crack in a plaster wall is a timestamp. It marks the settling of the earth, the passing of a damp winter, or the shifting of a century-old timber frame. While structural issues must be addressed for safety, minor cracks are simply the patina of a home that has lived. Water dissolves the salts in the plaster, causing

Those spiderwebs in your plaster? Not a ghost. Just an old house doing its thing.