angela R asked:

My roof has hard water stains, from a leaky swamp cooler. I fixed the cooler problem but now I have hard water stains on my roof. I am not sure whether to paint them or try to clean the hard water stains. I have a power washer but I am afraid it will damage the roof shingles. If I go with the paint what type should I use? Would CLR work better? any suggestions?thanx in advance!

hertfordshire roof repair