Start with the gap, because everything else on this page follows from it. Nothing published defines a roof restoration. The standards reaching a roof govern installing tiles, metal cladding and how tiles are fixed — none says what a restoration includes or excludes. The roof tile industry's own technical library, representing more than 90 per cent of Australian roof tile manufacturing and installation, publishes factsheets on flashing, ventilation, fasteners and reroofing and defines the term nowhere. Buyers feel that vacuum without naming it, describing a restoration by reciting whatever happened to their own roof.
So the boundary has to be borrowed, and Queensland publishes the only one available. There is no "roof restoration" class in the QBCC taxonomy; the pieces are filed separately instead. Cutting and fixing tiles, setting out battens, bedding, pointing and installing associated flashing, and refurbishing and maintaining roofs sit in Roof Tiling, a class whose scope expressly excludes painting roofs. Painting is a class of its own, scoped as applying paint or another substance for protective, decorative or technical purposes, preparing surfaces for it, texture coatings, wallpaper, and cement render to no more than 8mm. External flashings, fascias and gutters sit in Metal Fascias and Gutters or the broader Roof and Wall Cladding class, and drainage needs an occupational plumbing and drainage licence. Read down that list: the thing sold as one purchase is visibly cut into three or four pieces by the state regulating it.
Two further rules decide how much of that division a reader has to care about. Building work valued over $3,300 must be carried out by a licensed contractor, and work belonging to another class may ride along inside a job only where it is incidental to the licensed work and totals $3,300 or less — beneath that value the classes blur; above it, each one needs its own licensed contractor. The second rule concerns who holds a class at all: where a company holds the licence, its nominee must hold a contractor or nominee supervisor licence in the same class as the company. Classes are held by name and by person, which is exactly why they can be looked up.
Which turns an unanswerable question into an answerable one. Not what do the words mean, but which licensed classes does the work in front of you span — and which classes does whoever quotes you actually hold. The second half of that has a public answer, searchable free on the QBCC register, for any contractor you are considering.