Cologne - 20mm Outdoor Tiles A range of slate effect tiles with subtle tonal variations and clever surface texture. Its larger formats create a flagstone feature but as with all our porcelain it requires no sealing. Request Free Sample White – More Info >> Cream – More Info >> Grey – More Info >> Black – More Info >> Looking for Design Inspiration? Outdoor Tiles Brochure Online Tile Brochure Online Wood Brochure Brochure Request Request a Free Sample Contact Us