Resene Popular Paint Systems –
Roofing products and roof paint preparations: training notes
This web page is an edited version of the Resene Best System Selling training notes provided to Resene staff and is provided to enable you to gain a greater understanding of the substrates and paint systems you may encounter in your decorating project. It is impossible to cover all decorating scenarios in a single document, so if you are in doubt about any aspect of your project please contact Resene for assistance.
Select the roof product type you will be painting from the list below to view how to prepare and finish the surface.
Note: Refer to the PDF flowchart for a visual of the steps below:
Treat moss and mould with Resene Moss & Mould Killer
Thoroughly scrub using Resene Roof Wash and Paint Cleaner and a hard bristled scrubbing brush. Alternatively wash down using a high pressure waterblaster.
Scrape as necessary (see notes)
Spot prime bare areas with Resene Galvo One
1 To optimise the benefits of the Resene Cool Colour topcoat use Resene Cool Primer
Often roofs with flaking paint will also be dirty and have some mould and lichen growth. Preparing them is likely to be time consuming and difficult to judge the level of preparation needed. A balance between removing the paint that is unsound and not damaging the roof must be found.
This is why Resene recommend scrubbing with Resene Roof Wash and Paint Cleaner and a hard bristled brush to waterblasting
Hard wire brushing or sanding should be confined to the red rusting areas only. This will avoid damaging the protective galvanised layer, which will simply lead to more rusting.
The prepared area must be primed promptly. Do not leave overnight as dew causes the edges of the paint to lift and you will need to start over. Collect any removed paint and check that the gutters and downpipes are cleaned out.
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