In bushfire-prone areas, even small construction flaws can become ignition points. Poor workmanship and unsuitable materials create gaps and weak seals that allow embers, heat, and smoke to enter the structure.
Risks
When exposed to radiant heat or ember attack, poor construction can:
Leave gaps greater than 2 mm where embers can lodge
Allow sealants and joints to fail under heat stress
Expose timber framing and insulation to direct flame or radiant heat
Cause plastic fittings or low-temperature sealants to melt and open pathways
Let embers penetrate wall cavities, eaves, and roof spaces
A single ember entering through a poorly sealed joint can start a hidden fire inside your home.
Fixes
Quick fix: Inspect external joints, vents, and penetrations for cracks or gaps. Seal openings greater than 2 mm with high-temperature-rated silicone or non-combustible filler.
Long-term fix: Build and maintain to bushfire-resistant standards:
No gap greater than 2 mm anywhere on external walls, eaves, or roof junctions
Use high-temperature-rated silicone where building elements could be exposed to radiant heat
Select bushfire-rated materials for cladding, seals, and fittings
Check workmanship during renovations or repairs — ensure tight joins and proper sealing
Engage qualified tradespeople familiar with bushfire-resistant construction standards
Quality workmanship and materials are essential for keeping embers out and protecting your home.
Why it matters
Bushfire safety starts with the details. Tiny gaps and poor seals can undo all other protection measures. Using the right materials and ensuring quality workmanship make your home far more resilient to ember attack and radiant heat.
Take action today
Inspect joints and seals around your home
Take action to eliminate gaps greater than 2 mm
Use high-temperature rated silicone where heat exposure is possible
Replace low grade materials with bushfire-rated alternatives
Check workmanship during maintenance or renovation
Keep a record of bushfire-resistant upgrades for future reference
