Fitness First Rubber Flooring 1/2 inch thick is a popular speckled rubber flooring. They have become the most favored style of rubber flooring because they are easy to install, hide dirt well and have a virtually seamless appearance. Floor is easily installed using standard carpet tape or flooring glue. Sold by the Square Foot. Black Also sold in 3/8 inch thick = SKU: F1FLOOR3.8