Not all cracks are cause for concern, but some are. As a general guide, hairline cracks in mortar joints are usually the result of natural settlement or weathering and can be addressed with standard repointing. Wider cracks, diagonal cracks running through brickwork, or cracks that are growing over time are more likely to indicate a structural issue and should be assessed by a specialist. If you are unsure, the safest approach is always to get a professional opinion early. Our team are experienced in diagnosing brickwork problems and will give you an honest assessment, including whether Helifix crack stitching is the right solution for your property.