In the presence of thick moss or large patches of lichens, effect an initial brushing or scraping.
During hot weather, dampen the surfaces to be treated in order to cool them down, then leave them to dry.
Then apply the product neat, from top to bottom of the base with the aid of a sprayer, a paintbrush or a roller.
Never rinse after application.
Clean the tools with water after use. Important : do not apply in the rain