In the presence of thick moss or large patchs of lichen, effect an initial brushing or scraping.
Protect surfaces that do not need to be treated.
In case of accidental projections, clean immediately with a cloth soaked in white-spirit.
Then apply the product neat, from the top to the bottom, on a dry base with the aid of a sprayer, a paintbrush or a roller.
Never rinse after application.
Clean the tools with white-spirit after use. Important : do not apply in the rain.
Do not apply onto surrounding vegetation.
Avoid all contact with fish and all discharge into ponds, rivers, bodies of water, etc