Cracks in Walls: When to Call a Structural Engineer

Daniel Nikolla

Oct 20

1 min read

Updated: 7 days ago

Most hairline cracks are harmless, but some point to movement or overloading that needs attention. Knowing the difference saves worry and money.

This guide explains when to call a structural engineer.

Cosmetic or structural

Fine, stable cracks are often shrinkage or minor settlement. Wide, growing or stepped cracks deserve investigation.

What an inspection involves

The engineer records crack widths and patterns, checks nearby drains, trees and past alterations, and may recommend monitoring.

Common causes

Foundation movement, missing support over openings, roof spread and moisture changes in clay are frequent culprits.

Monitoring

Simple tell-tales or gauges across a crack show whether it is moving over weeks or months.

Repair options

Repairs range from simple repointing to strengthening or underpinning, depending on the cause.

Talk to Graal

Planning work on your home or a small development? Graal Structural Engineering provides structural design and project management support across North London. Call 07737188754 or request a free quote through our contact form and we will tell you what is needed and what it is likely to involve.