Without more information, this is a very difficult question to answer. The cost is generated using several factors. The type, color, size, and location of the surface. Please contact us with some basic information and we will give you an approximate square foot price. In some cases, we will visit the site to test the surface. This test will illustrate the effectiveness of the process as well as determine the ratio of chemicals that we will use. You will always know the exact cost of the job before we begin.