[craigR]

Hi all,

Can anyone with experience of soft wash roof cleaning give me an idea of the best S H ratio for concrete tiles after scraping all moss off.
I was thinking on the lines of  3 and half :1  using 15% Sh or benz lightning clean at 5:1. and what results I may expect.

Also how much rinsing is needed after application as I'm of the understanding it would require a lot.

Thanks in advance.

Craig.

[TomCrowther]

Those ratios are ok. You don’t need to rinse the roof tiles.

[craigR]

Thanks Tom. I was concern of salts coming out of the tiles in the future if not rinsed well, but suppose the weather deals with that and bleaching the tiles too much at those ratios.
Many thanks.
Craig