Hello all
We have a fairly large flat roof to an extension. It is covered small, white stones all over the top.
These stones are getting a green appearance caused by, I guess, some organic growth encouraged by sunlight.
Is there anything I can use to stop and/or remove this? Perhaps a spray of some kind?
Any recommendations to products, tips for fixing this etc. most gratefully appreciated.
We have a fairly large flat roof to an extension. It is covered small, white stones all over the top.
These stones are getting a green appearance caused by, I guess, some organic growth encouraged by sunlight.
Is there anything I can use to stop and/or remove this? Perhaps a spray of some kind?
Any recommendations to products, tips for fixing this etc. most gratefully appreciated.
