1 Generally, rubber flooring ranges from $2 per square foot to $15 a square foot depending on the quality of the material. 2  The higher quality, the more expensive. 3  However, most purchases should be between $2 to $6 per square foot. Rubberflooringinc.com, an online flooring company, allows you to choose from different types of rubber flooring which includes rubber rolls, tiles, and mats. 2  They offer products, such as Slate Flex Tiles, which retail for $3.59 per square foot.