test Some months ago I purchased 5L of your product, Wet and Forget. I intended to use your product on pavers which had need of cleaning. My house is over 50yrs old and has a teracotta tile roof which was covered with moss and grime. One could hardly see the natural colour of the tiles. I was told by the builder the tiles needed to be replaced, with a quote of $6,000. I advised him that I would consider it. I decided to try Wet and Forget and used it all, hoping for the best.
Meanwhile, I went away touring in my caravan for 4 months and on my return - to my horror - the roof tiles had been replaced!! I rang the builder accusing him of going ahead with replacement tiles without my authorization. He assured me he had not done any work at my house and was waiting for me to give the go ahead. At this point I realised Wet and Forget had done the job and my rood looks brand new. I cannot thank you enough. You may use this as a recommendation of your wonderful product at will.