Garden GenieRoof Cleaner | Fast Acting Concentrated Outdoor Treatment | Mould, Mildew, Lichen and Algae Remover - 5 Litre

I moved into a house with a considerable amount of moss on the north facing roof. I first made a scraper to remove the worst of it, then sprayed with neat vinegar. A week later, I bushed off more of the loose stuff and applied this product. I used it neat and used about 4 litres in total. Between the vinegar and this, everything is fully dead and seems to be gone (at least for now). I’m going to keep an eye on it, but interested to see how long it stays clear. Even if I had to re-apply every 6 months, I’d still recommend it.I should add that we had quotes from professionals to do this task. They came in between £800 and £1500. So I’m glad I gave it a go! Just get someone to help keep the ladder steady and you should be able to get the same results without climbing onto your roof.

It worked on the roof tiles and on our indian paved patio, the only thing is you have to be patient.Yes, I would recommend to a friend.

Coated roof and killed moss quickly

Had a lot of moss on roof, one treatment as per the instructions seem to have killed it off

Did exactly what it says on the container, sprayed onto the moss on my roof, went back to it the next day and, the moss was dead. Swept it off and it looks great

Diluted 5:1 job done seems OK

I was very disappointed with the results from this product.

Tried it on my north facing roof tiles which have started with yellow lichen after 5 years.No change after several applications.I've not tried it on other moukds/moss.