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Name: Roger    City: London

Question: When I took down the existing tiles of the roof for the house the tiles were in a bad state as they had dirt, grime and moss all over. What I decided to do was to use a jet wash and mildly spray off the gunk. I placed 6 tiles in the garden and washed them evenly. All the dark gunk came off to leave a nice clean pink look. The only problem I noticed was that where the tiles overlap each other the gunk remained and wouldn’t come off! Now we have half pink and half dark brown tiles. I initially done a trial for 6 and realised that we would end up leaving the roof patchy in colour so I left it. I was away for 2 days and when I came back 80% of the tiles had been washed by my two sons!!!!!! If I replaced the tiles with new it would cost a lot of money, which I haven’t got! What can I do? Is it possible to spray the roof with some kind of tile dye which is water resistant & gets absorbed by the tiles? Hope someone can help!