Hi, I have a patio of quite badly weathered Indian slate, which could do with some rejuvenation, it's originally a dark blue. Any tips on how this can be brought back to life without replacing the tiles is appreciated. Warm regards Trevor
Assuming the slate is clean,dry, sound and prepared as detailed in the technical data sheet we can recommend Hydron Mona-Guard Nhance.
This provides oil and water repellent properties and lifts the true colour of the substrate.