Ask most owners what a restoration involves and the answer arrives as a list: clean, repoint, replace cracked tiles, paint and seal. What it does not say is which items hold the roof down and which change how it looks — the sorting that matters when two quotes sit side by side.
Start with the ridge, the hips, the barges and the valleys. The National Construction Code treats those tiles differently from the tiles out in the field of the roof — each of them has to be held down individually, in its own words to fix each tile, and that applies to every such roof alike. So, the first question to put to a quote: when it says the capping will be re-pointed, does that cover every capping tile, or only the run that looked worst from the driveway?
Pointing is not decoration either. The Code accepts only four ways of holding a tile down: galvanised clout nails, self-embedding head screws, purpose-made clips, or flexible pointing. So the second question is shorter still: which of those four is your quote relying on along each line? The answer is worth having, because Australia's national science agency (CSIRO) treats pointing the way you would treat a fastener — soaked for three days, then pulled at thousands of times over by suction meant to imitate a storm gusting across a roof. If the answer is pointing, ask what condition it is in along each of your lines, not only where you can see it.
Almost every Banyo dwelling is a whole house on its own block — 92.2% are separate houses, against 74.8% across Queensland and 72.3% nationally. Attached housing barely registers here: 2.9% townhouses and 4.6% flats, against 11.7% and 12.5% across Queensland. So there is rarely a shared roof or a body corporate to work around, and every metre of ridge, hip, barge and valley is yours to ask about.
One thing has to be settled before anything is cleaned: what the roof is made of. Queensland guidance is that a house built before 1990 has a good chance of containing asbestos cement material, and that you cannot identify it by looking. Using high pressure water spray on asbestos cement is illegal in Queensland, and on a home that prohibition reaches the owner as well as any contractor. On older clay tiles, the tile industry's own peak body advises avoiding high-pressure washing. Your first step needs nobody else: find your build year, then ask whoever quotes what they intend to use on your roof.