Applied by a sprayer after being diluted to the required strength, Alkem will kill the algae living on your render. It takes time to work and may require another treatment after a couple of weeks to get the best results. Alkem is best used as a preventative treatment as it will kill the algae spores and prevent excessive growth during the year.
Syntec Alkem Algaecide
Alkem is a high grade algae remover for render and paving. It is garden friendly and can be used in most outdoor areas. It can be diluted up to 1:5 with fresh water or used neat of more stubborn areas. To be used before applying a new render to an old substrate or to freshen up a grubby render or paving area.