Rubber paving starts with a specific size of rubber crumb which is shredded recycled tires that have had all the radial metal bands removed. This rubber crumb is mixed with a specialized binder agent. This granular mix is applied to a surface, typically concrete or asphalt (but can be carefully tamped gravel mixes), in a layer of approximately one inch for driveways, sidewalks and patios. After the application, it is packed and trowelled to make a firm, smooth, and uniform surface.