Hi @Cranswick, I don't think there are any concerns that this could spread within your roof cavity. I've confirmed with the manufacturer that the ...

Hello @Cranswick It appears to be mould and mildew along with a form of dust deposit. It does not appear to be a heavy rust infestation. In regards ...

That's typically seen at points where the sheeting is damaged and the inner steel exposed, like on cut edges @Cranswick. It's unlikely to occur mid-sh ...

They've likely done testing and found it doesn't damage Colorbond @Cranswick. Given that they are recommending it for that purpose, I would say it's v ...

Hi @Cranswick, It could be mould or mildew, though mould doesn't typically grow on a roof. Looking at the specifications of the 30 Seconds 5L Roof T ...

@Cranswick, the only product recommended for use on your Colorbond steel sheets is a mild dishwashing detergent in warm water. All of our outdoor clea ...

Hi again @Cranswick, Vinegar is quite acidic, and while it's often used as a household mould remover, it's not listed by Bluescope as a recommended ...

Hi @Cranswick, Maintenance washing of the Colorbond sheeting should be as follows: Wash the surface with a mild solution of pure soap or mild non- ...