Santay Design Construction is a roofing contractor located in Hayward, California. Specializing in: Serving the San Francisco Bay Area with Creative Professional Design and Installation of Decks and Landscapes. Landscape Design and Creation Decking Redwood,Ipe,Batu,Composite,Trex Rooftop Decks and Roof gardens Walkways,Retaining Walls,Hardscapes Concrete,Pavers,Stone Landscape and Deck lighting. Contact us for a free estimate.