Not all wall cracks are the same

Sponsored content: Wall cracks in buildings can indicate a serious underlying issue.

Not all cracks are the same. The type, size and location of cracking are important factors to consider when identifying the cause of the issue and determining the best steps to resolve the problem. 

The most common types of wall cracks that generally appear in buildings are:

  • Interior cracks affecting plasterboard, gyprock or brickwork.
  • Exterior wall cracks in brickwork or cement rendering of external walls.

If wall cracks suddenly appear in your home they may be a symptom of a deeper structural issue. 

Smaller hairline cracks are fairly common in walls and not usually cause for concern.

However, larger cracks that start at windows, doorways or corners of buildings may suggest the property foundations have sunk, subsided or lost strength, causing all or part of the building to sink.  

Pay attention to whether the crack is jagged, horizontal or vertical, zig-zagged, stepped in brickwork, or follows mortar lines. 

Seek professional advice if the crack is 5mm or wider, or you notice a complete separation in the mortar or cement between bricks.

Mainmark offers some of the most advanced, non-invasive resin injection and grout technologies, perfected over more than 20 years, to quickly correct foundation ground issues with minimal mess or disruption.

Our knowledge of Queensland’s unique local conditions, from far North Queensland to central Queensland and the South Eastern corner, enables Mainmark to utilise our Teretek®  engineered resin injection solution to effectively raise, re-level and re-support footings under a home.

For more information and advice about ground issues and remediations solutions contact Mainmark on 1800 623 312 or visit