House Tiles

[bluesofa]

Hi, I'm asking for a friend who is renovating a house. He wants to know the following, if any BM can help?

Cheers:

I have a tile roof on my house that has dirt and mildew on the outside of it. I want to repaint the tile with a different color, however, I need to prepare it before painting. Does anyone out there have experience on how to perform this? I have thought of bleach and water and also some type of caustic cleaner. If you have information on this subject and where to buy the cleaner please help me.

Thanks.

[Rimmer]

Maybe try a Jet washer first. But failing that a wire brush and lots of elbow grease or a wire brush on an angle grinder should fetch most of the heavy stuff off, you can then clean what remains with a strong floor cleaner such as Vixol that will get the mildew off.