NCC 2022 Housing Provisions Table 7.2.2a lists AZ150 - the coating class sold as zincalume - among the coatings permitted for metal sheet roofing. On the code alone, that sheet is an allowed choice.
The local planning system does not narrow it. Under the Sunshine Coast Planning Scheme 2014, building work involving minor building work is accepted development with 'No requirements applicable', and roof painting alone is not building work or development at all. The scheme notes that work accepted under it may still be assessable under the Building Regulation 2006 or other State legislation. On which material goes back on, the public system is quiet.
A private document is not quiet at all. The clause quoted above names the coating class the code permits and rules it out; the same clause sets minimum roof pitches. It reaches material and pitch, and not roof colour. The document also requires each buyer, before selling, to obtain a written deed of covenant from the future buyer agreeing to be bound, and the same of every buyer after that - which is how an instrument like this outlives the release that created it.
Council's development register names the Parklakes II estate at a Bli Bli address, and it is the only public source placing that estate in the suburb. The covenanted stages appear in no council record retrieved, so treating them as part of Bli Bli is an inference from where the estate sits rather than a register entry. On the developer's own figure they come to approximately 95 lots, against Bli Bli's approximately 3,661 occupied private dwellings - a small corner of one estate, not a rule over the suburb.
And nobody administers it. Sunshine Coast Council publishes that building covenants 'can include roof type and building colour' and that they are 'a civil matter and not enforceable by council'. So a covenant can reach the roof, and no council objection will ever arrive to warn an owner off.
Does any such document sit on your title? A search of your own title and your contract of sale settles that, and nothing else does. And would it reach a restoration of a roof already standing? The document does not settle that either way: its approval wording is written around original construction and its deadlines run from purchase and from house completion, but it carries no clause about repairs, alterations or maintenance, and no expiry. Either way, your own title and contract of sale answer it.