If your build is in a bushfire-prone area, the front door isn't a place to compromise on compliance. We build doors engineered to meet BAL ratings from BAL-12.5 through to BAL-FZ.
BAL — Bushfire Attack Level — is the rating system that classifies how much radiant heat, ember attack, and direct flame a building element has to withstand. It's set by the building code (AS 3959) and assessed for every property in a designated bushfire-prone area before construction or major renovation.
Your bushfire assessor gives you a rating: BAL-LOW, BAL-12.5, BAL-19, BAL-29, BAL-40, or BAL-FZ. The higher the number, the more aggressive the protection your building elements need to provide. The front door — every external door, in fact — has to meet the rating that applies to your site.
This isn't paperwork. The rating affects what you can use, how it has to be built, and which timber species are acceptable. Get it wrong and you don't get sign-off. Get it right and the door does its actual job: keeping your house intact during a bushfire event long enough for the front to pass, embers to die, and the structure to survive.
Dense, stable, and it chars rather than combusts. When the BAL assessor signs off, that's what they're looking for — a timber that doesn't sustain combustion, doesn't drop burning fragments, and forms a protective char layer under direct heat. Australian Chestnut is one of the species that performs.
Most external door failures in bushfire are ember-driven, not flame-driven. Embers find gaps, smoulder, and ignite the inside of the building. Our BAL doors are sealed at the perimeter to BAL specification — every gap, every threshold, every transition between door and frame is detailed for ember resistance.
The threshold is the highest-risk part of any external door — closest to ground level, where embers accumulate. We run a Merbau sill the full width of the assembly including any sidelights. Merbau is dense, dimensionally stable, and holds the sealing detail under load.

A Mornington Peninsula property where the previous front door was a 1970s slider — not BAL compliant, not secure, not anything. We replaced it with a 1220mm Australian Chestnut door flanked by double sidelights, full BAL rating, dense timber that chars rather than combusts.
Read the full Sorrento story for the construction approach, the timber selection, and the conditions we engineered for.
Your BAL assessment. The bushfire assessor's report — usually a one-page certificate — tells us your rating (BAL-12.5, BAL-19, BAL-29, BAL-40, or BAL-FZ). Different ratings call for different timber species, sealing strategies, and construction approaches.
The opening dimensions. Width, height, depth of the wall, whether you have sidelights, what the threshold looks like. Photos of the existing entrance from inside and out are usually enough.
The architectural intent. Are you replacing a door on an existing build, or speccing for a new build? What's the facade material? Are you working from drawings, or just photos? We can build to a door schedule or work from a brief.
Your timeline. BAL doors are individually engineered and quoted. Lead time is 8–10 weeks from deposit. Knowing your build sequence helps us slot the manufacture in at the right point.
Search "BAL-rated front door Melbourne" and you get hardware-store generics that don't actually meet BAL spec. We build doors that do — engineered to your assessment, manufactured at our Moorabbin workshop. If you've got a property in a bushfire zone, talk to us before you spec anything.