Walkways/decks/flooring can be made from various materials including the following: flat steel, open grating/grille, aluminium, concrete or wood. These tiles are installed onto your walkway/deck surfaces and secured by either mechanical fixing, welding or bonding with adhesive. Surface Grades: Coarse grade: 1-3mm aggregate (1/16” - 1/8” approx.) Extra coarse grade: 3-5mm aggregate (1/8” - 3/16” approx.) Colour Code: Colour code in a wide range of colour schemes to suit individual locations. Available colour codes are: Safety yellow, Black/safety yellow, Black, Green, Grey, Blue, Red, White. Photoluminescent making is available.