A bleach like Janola. Dilute it and use a garden sprayer. Ideally you want to spray after a few days of fine weather. It might take a few weeks to die.
tegretol,
Jul 14, 6:38pm
Use 25yr old malt diluted 100;1. There seems to be a price war going on and it's as cheap as bleach (and a darn sight easier to work with).
yapper,
Jul 20, 3:44pm
Use Whisky?
martin11,
Jul 20, 3:50pm
What a waste ! Unless its was recycled Whiskey
denzie,
Oct 13, 1:48am
The South side of our steep pressed iron roof has a lot of moss/lichen. Hoping we can clean it ourselves with a spray on product. All suggestions gratefully received.
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