Blender Market - This Procedural Tile Texture Pack includes 8 procedural tiles textures, each producing a different layout of tiles. A set of custom utility nodes to help you build procedural materials
Tiling procedural textures in Blender
Simon Thommes on Twitter: "Quick study of using my procedural scales texture for aging roof tiles. If you haven't seen it, here's a snake using the same base texture: https://t.co/eiRy5I8m6M Both 100%