How to Identify When Your Home Needs Re-Rendering

How to Identify When Your Home Needs Re-Rendering


How to Identify When Your Home Needs Re-Rendering


19.11.2025 00:05 35

Recognising the Signs

Your home's render serves as the first line of defence against Perth's challenging climate. Over time, even the best-applied render will show signs of wear. Recognising these signs early can prevent costly structural damage and maintain your property's value.

Warning Signs to Watch For

1. Cracking

Not all cracks are created equal:

  • Hairline cracks: Common and usually cosmetic. Monitor for progression.
  • Map cracking: Network of interconnected cracks indicating render failure.
  • Structural cracks: Large cracks following a pattern may indicate foundation issues.

2. Hollow Sounds

Tap your rendered walls gently. A hollow or drum-like sound indicates the render has detached from the substrate - a condition called \"drummy render.\" This requires immediate attention as sections may fall away.

3. Moisture Problems

Look for:

  • Damp patches that appear after rain
  • Efflorescence (white salt deposits)
  • Green or black mould growth
  • Paint bubbling or peeling

4. Render Erosion

Check for areas where the render appears thin or where aggregate is exposed. This is common in areas exposed to prevailing weather or near downpipes.

5. Colour Fading and Staining

While not structurally concerning, significant colour variation can indicate UV damage and may precede more serious deterioration.

Common Causes of Render Failure

  • Age: Most renders have a lifespan of 25-30 years
  • Poor original application: Incorrect mixing, curing, or application techniques
  • Building movement: Settlement or thermal expansion
  • Water ingress: Failed flashings, gutters, or pointing
  • Impact damage: Physical damage from garden equipment or vehicles

The Cost of Delayed Action

Ignoring render problems can lead to:

  • Water penetration causing timber rot
  • Mould growth affecting indoor air quality
  • Structural damage to brickwork or framing
  • Dramatically increased repair costs

Professional Assessment

If you've noticed any of these warning signs, it's time for a professional assessment. At Magic Rendering, we provide thorough inspections to determine the extent of damage and recommend the most cost-effective solution - whether that's spot repairs or complete re-rendering.

Contact us today for a free inspection and protect your home before minor issues become major expenses.

Share: