How would you like to enhance your surroundings with the beauty of a stone wall, but without all of the expense or disturbance to your property? Welcome to Certainteed (formerly SimTek) Simulated Stone Fencing! Hailed us as “The Greatest Looking Fence On The Planet”, Certainteed’s simulated stone fencing has the look and feel of a real granite wall! It’s made from polyethylene, which is the same type of plastic used to make Little Tikes™ playground equipment. More on Certainteed Simulated Stone fencing.