San Mateo homes go from 1920s–50s houses near downtown and in the Baywood and Hayward Park areas to hillside homes facing the Bay wind and fog. Damp, foggy mornings keep roofs wet longer, so moss, worn shingles and tired flashing show up here sooner than in the South Bay. Titanium Roof Innovations replaces and repairs shingle, flat and tile roofs in San Mateo, starting with a free estimate.