Top quality service for you waterproofing needs. Magnesite & Diato Service since 1974. Installing in the greater Los Angeles and valley areas, Glendale, Burbank, Pasadena, Ventura County. Magnesite Diato Service is different, we don't look for shortcuts, we want the customer to know that we treat each property as if it were our own, thus the work will reflect our believe. Magnesite Diato...