Established in 1986, Sigma Marble and Granite is a family-owned and operated full-service fabricator of natural stones, and ceramic and quarry tiles. The firm, with a location in Dallas, also operates an office in Houston. It employs a team of project managers, draftsmen and professional ceramic tile mechanics. The firm s projects include hotels, schools, concert halls, clubs and theaters. Sigma Marble and Granite also offers installation services for vanities, kitchens, fireplaces, foyers and stairways. Additionally, it provides maintenance services that include sealing, stripping, cleaning, waxing, sanding, patching and anti-slip floor treatment. The firm s Web site features various maintenance tips and project details.