At GC Pressure Washing before any roof clean we carry out a survey to check the condition of your roof either from the ground or by using a drone.
From there will will advise you on the preferred cleaning method.
Using minimal pressure, this method with give you an instant result. Followed by an application of biocide this will remove all biofilm and any tougher staining over time.
A follow up treatment is advised after a few years to inhibit regrowth.
Our second option is a roof scrape. This is a dry removal of the moss via a collection of and brushes and roof scrapers matching the profile of your tile. Followed by a biocide treatment. Over time this has the same result as a pressure wash (8-12months)
If you have any questions or would like to know more feel free to contact us