Grout cleaning and restoration experts. At Diamond Grout we strive to provide excellent service with the top experts in the industry in order to ensure the best experience possible for our customers. Our technicians are highly trained, polite and punctual professionals. We provide in-home estimates with one of our experts that will help you determine all your wants and needs at an affordable price for you. After Diamond Grout is done, your old grout will look as good as new!