I have a tile roof that is a nice sandy terracotta colour when wet, but dries to a pale pink. I cleaned it and sprayed with a clear acrylic about 7 years ago, but the acrylic didn't change the dry colour. I have just cleaned it again as it was just starting to get a bit of sooty mould forming. Is there a clear roof coating out there that will wet out the colour, and is resistant to mould? I don't like the look of solid colour resprays.


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