How to remove green from brickwork?

How to remove green from brickwork?

Bostik Green Remover can be used on external walls. First brush away loose material, soil and any thick growth, then test the diluted solution on a small, hidden area and check it after 24 hours. Once you’re happy with the result, apply the solution generously, leave it to dry and allow the green growth to loosen before brushing or washing it away.