When possible paint from a ladder rather than climbing atop the roof.
Painting a roof with a broom.
You can use a broom and hose but you will need some type of chemical to help remove the mould from within the pores of the surface.
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In conversation a friend advised me that her dad had always used a floor broom to paint the roof so that day as i found myself in bunnings i got hold of an interior floor broom with bristles not unlike that of a paintbrush for a mere 6 95 unlike roof roller which was 24 95.
The old timers did it.
Pour the paint at the apex and brush work it down the roof with the broom.
Painting a roof can be a difficult job that takes a long time so you should consider hiring professional painters to do the work.
This could be done with a broom and hose but for best results he advocates the use of a high pressure water blaster which provides maximum penetration of spots that are hard to access.
If the paint on your metal roof is starting to crack and peel or if you re tired of its color it might be time to paint your roof.
A large soft bristled broom is ideal.
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This is where high pressure is good it does get into all those nooks and crannies.
I found that a 5 gallon plastic bucket with a roll screen inside of it worked beautifully as a roller pan.
It is essential that new roofs are washed down before priming.
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Using a high pressure water blaster is one of the best ways to clean a roof specially any roof with a rough surface.
Far easier than a roller or paint brush.
If you re up for the challenge.
If you want to paint a roof use a doft bristle indoor broom.
Painting roofs painting roofs 2 resene roof wash and paint cleaner see data sheet d88 roof wash and paint cleaner is specifically developed to remove the form oils and other surface contaminants from new roofs.