What goes wrong with commercial roofs in Canberra?
Large roofs have large problems, and many start small. These are the usual suspects:
- Blocked box gutters and sumps. Leaves and ash can build up and overflow into the building.
- Loose fixings. Metal sheets expand and shrink with Canberra's big temperature swings, and screws can back out.
- Rust on older sheds, particularly at laps, cut edges and fixings.
- Ponding on low-pitch or flat roofs where water sits instead of draining.
- Cracked skylights and failed seals around plant and vents.
- Hail damage to sheets, skylights and rooftop equipment.
Condensation under metal roofs in winter can look like a leak, so we check for it before suggesting repairs. Smaller problems are similar to those on houses, covered under roof repair.

