Bullnose Roof

Few roofing details do as much for a house as a bullnose. That gentle convex curve over a verandah softens the whole façade, throws a deep, elegant shadow line across the front of the home, and immediately signals heritage craftsmanship. It is one of the very few roofing elements people notice — and comment on — from the footpath. A well-executed bullnose gives a house character and charm that no straight skillion verandah can replicate.

But It's Not for Every House

Bullnose is a period detail, and it looks wrong when it's applied to the wrong building. On a Federation, Victorian or Californian bungalow it reads as authentic. On a contemporary flat-roofed or minimalist home it reads as a costume. It also needs the right geometry: a bullnose demands sufficient verandah depth, correct post spacing, adequate fall behind the curve for drainage, and enough headroom at the drip edge so the curve doesn't close down the outlook from the verandah.

• Best suited to Federation, Victorian, Edwardian and cottage-style homes.
• Needs adequate verandah depth and post spacing to hold the curve proportionally.
• Requires careful fall and drainage design — a curve slows water at the tail.
• Heritage overlays and conservation areas often mandate specific profiles and finishes.
• Rarely appropriate on modern, flat-roofed or minimalist architecture.

Bullnose Products

Bullnose is a family of products, not a single sheet. The right combination depends on your radius, span, heritage requirements and budget.

• Curved corrugated steel — the classic profile, roll-curved to your exact radius in COLORBOND® or ZINCALUME®.
• Traditional convex bullnose sheeting — deeper, tighter radius curve for authentic period verandahs.
• Concave and ogee profiles — reverse and S-curve options for particular heritage façades.
• Heritage finishes — Wunderlich-style pressed detail, galvanised, zinc and heritage COLORBOND® colours.
• Bullnose gutters and half-round guttering — period-correct gutter profiles that finish the curve properly.
• Curved barge rolls, fascia trims and stop-ends fabricated to match the sheet radius exactly.
• Verandah posts, brackets, valance and lacework detailing to complete the streetscape.
• Insulated and anti-condensation blanket options for enclosed or habitable verandahs.
• Custom-rolled radii — we roll to the curve your building actually has, not a stock template.

Restoration and Replacement

Original bullnose verandahs are often 80 to 120 years old. Where the curve is sound we restore: strip, treat and replace corroded sheets, renew fixings and flashings, and re-detail the gutter line. Where the structure has moved or the timber has rotted we rebuild the framing and roll new sheeting to match the original radius, so the house looks period-correct rather than newly renovated.

Every ONTRA bullnose project starts with measuring the true radius on site. Curves drift over a century, and a sheet rolled to a drawing rather than the building will never sit flat.