Cracked Render on Your Bundaberg Home: Hairline or Something Bigger?

Almost every rendered home gets some cracking eventually. Most of it is cosmetic, but some cracks are a sign of movement that should be looked at before the walls are patched and painted.

Hairline cracks

Fine cracks less than about a millimetre wide, often in a spider-web pattern, are usually shrinkage in the render itself. They're common on older homes and after long hot spells. They can be filled and painted over, and a flexible coating helps stop them coming back. Our render repairs cover this.

Cracks along mortar lines

Straight or stepped cracks following the brick joints can mean the wall underneath has moved slightly. Bundaberg's reactive clay soils swell when wet and shrink when dry, so some seasonal movement is normal. If a crack is growing or wider at one end, it's worth getting checked before re-rendering.

Drummy or loose render

Tap the wall. If it sounds hollow, the render has lost its bond. Patching over it won't last, so the loose section needs to come off and be redone.

Repair before you paint

Painting over cracks only hides them for a while. Fix the render first, let it cure, then paint. If you're also seeing stains or bubbling on the inside walls, that's usually a plastering job rather than render, and plaster repairs inside are best done once the outside is sealed.

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