In brief
- Drywall, plaster, and stucco crack readily from shrinkage, humidity, and framing movement.
- Diagonal cracks at openings, tapered cracks, and recurring cracks are more likely to reflect structural movement.
- Exterior stucco cracks in a marine environment should be sealed even when cosmetic, to limit moisture entry.
- In condominium buildings, exterior walls are typically common elements.
Interior finishes
Drywall and plaster are rigid, thin finishes applied over a frame that moves slightly with temperature, humidity, and load. Some cracking is expected in any building, particularly one that is several decades old.
Generally cosmetic:
- Hairline cracks along drywall tape joints, particularly at ceilings.
- Short, stable cracks at door and window corners.
- Nail pops.
- Fine crazing in older plaster.
Warranting closer review:
- Diagonal cracks extending from the corners of doors and windows, especially if lengthening.
- Cracks noticeably wider at one end.
- Cracks accompanied by binding doors or windows. See foundation cracks, which addresses sticking doors.
- Separation between walls and ceilings or floors.
- Cracks that return after repair and repainting.
Exterior stucco
Stucco is a cement-based plaster applied over lath. It shrinks as it cures and develops fine cracking over time.
Generally cosmetic: fine random cracks, short cracks at window corners, and hairline cracks reflecting framing lines.
Warranting closer review: long diagonal cracks, offset or stepped cracks, horizontal cracks near the base of the wall, and cracks that align with cracking in the foundation below.
In Solana Beach’s marine environment, even cosmetic stucco cracks allow moisture to reach the framing and the metal lath behind the stucco. Sealing them is sound maintenance.
Considerations specific to Solana Beach
Building age. With half of the city’s housing built in the 1970s, most walls have decades of accumulated minor cracking. We distinguish historical cracking from recent change.
Multi-unit construction. In condominium buildings, cracking that appears in several units on the same side of a building, or at the same level, suggests a building-wide cause rather than a unit-specific one. Owners should report such patterns to the association. See HOA and condominium structural repair.
Seismic events. The County’s 2023 hazard annex rates earthquake as a high hazard for Solana Beach. Wall cracking that appears after felt shaking should be documented and, if significant, evaluated. See seismic retrofit.
Bluff-top properties. New or progressive cracking on the seaward side of a bluff-top building should be reported to the owner’s geotechnical engineer and evaluated promptly. See bluff-top foundation repair.
Documenting wall cracks
- Photograph each crack with a date and a scale reference.
- Mark the ends lightly in pencil.
- Note whether doors and windows in the same area operate normally.
- Check the exterior face of the same wall and the foundation beneath it.
- Recheck at regular intervals, and after rain or seismic activity.
This record is valuable to any evaluator and to associations assessing building-wide conditions.
Our evaluation
We review the pattern of cracking across the building, measure floor elevations, and examine the foundation beneath affected areas. Most wall cracking proves to be cosmetic. Where it indicates foundation or framing movement, we trace the cause and describe repair options, coordinating with licensed engineers as needed. See foundation inspection and uneven floors.
Questions from owners and boards
Does a crack above a door mean the foundation is failing?
Rarely on its own. Openings concentrate stress, so minor movement of any kind shows there first. The overall pattern matters.
Should cosmetic stucco cracks be repaired?
In a coastal environment, sealing them is advisable to limit moisture intrusion.
A crack returned after we patched it. What does that indicate?
Recurrence suggests ongoing movement, whether seasonal or structural. It is a reasonable trigger for evaluation.
Several owners in our building report similar cracks. What should the board do?
Commission a building-wide assessment rather than addressing units individually.
Request a Free Quote
Provide photographs and a description of where the cracks appear. For associations, note which units are affected.