About Us

Chris S. Mast Company -- Specializing in Architectural Sheet Metal Fabrication for residential and commercial construction in the San Francisco Bay area and beyond. We produce and install quality custom-built sheet metal products including roofing metal, flashing systems, custom-designed range hoods, counter tops, lighting shrouds, residential and commercial ducting and venting, as well as many other architectural requirements.

We manufacture many custom sheet metal products including: Gutters, downspouts, leader heads, lamps, finials and fountains. Any product can be made according to your specifications and shipped to your location anywhere in the U.S!

As you'll see from our examples, sheet metal is our specialty. We work with copper, brass, zinc, galvanized steel and stainless steel.  Call us early -- when you're in the planning stage of your project.  With over 20 years experience, we are experts at integrating and providing quality sheet metal products for your construction needs.
                                                                                                                              We provide service to the greater San Francisco Bay Area including: Alameda, Alamo, Albany, Berkeley, Danville, El Cerrito, Kensington, Lafayette, Moraga, Piedmont, Oakland, Orinda and Walnut Creek.

We also serve Marin County Incuding: Tiburon, Belvedere, Sausalito, Mill Valley and San Rafael.