Restoration is the word the trade uses; customers rarely use it the same way. In reviews of this business, people describe what they bought as "pressure cleaned, cleaned gutters, repointed, replaced tiles, painted and sealed the roof," or as "repointing, replacing cracked tiles and repainting our tile roof." Those are the component tasks — tile replacement, re-pointing of ridge caps, surface preparation, cleaning, gutter and fascia work and protective coating — on both tile and metal roofs. Metal-roof owners tend to talk about renovating rather than restoring, and may not realise the service applies to them at all. Here the translation falls to the reader: only 20.4% of dwellings are rented against 33.1% for Queensland, so there is rarely an agent in between.
The business publishes its own order as inspect, clean, repair, coat and seal, final check. That is its published process, not a universal industry order — guidance elsewhere puts repairs before cleaning — so ask anyone else you compare what order they work in, and why.
Order matters less than substrate, which is what actually decides method. The roof tile industry body advises avoiding high-pressure washing on clay and terracotta tiles because it can damage them — advice scoped to those materials, not to every roof. Queensland Government guidance states that a house built before 1990 has a good chance of containing asbestos and that you cannot tell by looking, so suspect material has to be assessed before it is disturbed. It is illegal in Queensland to use high pressure water spray on asbestos cement roofs, and that prohibition reaches homeowners doing it themselves, not only contractors. That last point lands harder where 86.9% of dwellings are separate houses against 74.8% statewide: the owner is usually the one holding the wand, and the age test that matters is the age of your own house, not the age of the suburb.
Then there is the part of the job that most often gets painted over. Under the National Construction Code, ridge, hip, barge and valley tiles including capping are to be fixed individually, using flexible pointing material complying with AS 2050. In the standards it is a fastener, not a decorative line. A coating laid over failed pointing conceals a fastening problem rather than fixing it, which is the most useful thing to know before comparing two quotes that look alike on price. On an attached roof that fastening problem is not confined to your half of it. The fair question about price is what the scope buys, not who is cheapest.