Why Is My Plaster Cracking?

Can I paint over cracked plaster?

Cracks in plaster Allow the filler to dry fully, then rub down smooth and dust off to create a clean, smooth surface for decorating.

To ensure even porosity spot prime with a thinned coat of your finish before painting the affected area (only if the finish is matt)..

Is it normal for plaster to crack?

A: Old lath and plaster walls are prone to cracking. Over time the plaster separates from the lath, creating structural cracks. Plaster is also prone to thinner spider-web cracks, which occur when the topcoat of the plaster degrades. It’s common to have both kinds of cracking — and both types can be repaired.

Why does plaster get hairline cracks?

“Hi Angie, it is normal for new plaster to get hairline cracks as it dries out due to the material shrinking. It is especially prominent around ceilings if you have had new plaster boards put up.

Should I worry about hairline cracks?

Problematic wall cracks will typically start at windows, doorways or house corners. Generally, smaller hairline cracks are not cause for concern. These are usually the result of seasonal expansion and contraction of clay soils beneath your house over time, and can be easily patched and re-painted.