I have used Tilex on my roof, and it comes out really white along with all the caulk joints. I called Dicor and asked if its OK to use and they said yes.
BUT, I also have the DW on the ground washing the sides as I wash the roof, don't want the Tiles drying on the sides of the coach. Then I re-wash the roof with Spic and Span as the DW washes the sides again. All this is done on a cloudy day so the Tiles doesn't dry up very fast.
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