Diamond Certified CB Showers, in San Carlos CA, sells and installs custom shower glass, custom mirrors and other interior glass.


CB Showers – the CB stands for Custom Built – pioneered frameless showers on the Peninsula and has led the way in innovative custom shower enclosures for over 25 years.

New owner Aristotelis “Telly” Sionides and company founder and V.P. Bruce Downs are supported by a highly trained, dedicated installation team. Together they continue to build on the company’s sterling reputation for strong customer service, forward-thinking design, and top-notch materials and products.

CB Showers is a Diamond Certified business that specializes in high-end shower enclosures which can be tailored to any design plan and budget. Our installers have expertise in installing a wide range of enclosure styles. CB Showers also handles a variety of interior glasswork, including mirrors, countertops and bar area glass. CB Showers is the Peninsula’s exclusive licensee of the award-winning Diamon-Fusion® glass treatment, a unique process that seals the “pores” in the glass, protecting it from the harmful deposits found in water and providing ease of maintenance.

CB Showers has an expansive showroom that spotlights the company’s vast array of design options and outstanding products. The showroom is updated often to reflect the latest trends and the display is testimony to the company’s quality and integrity, helping visitors understand why CB Showers has an enviable reputation among its ever-growing clientele.


We can fulfill most interior glass needs, but our specialty and main concentration is top of the line heavy glass Frameless shower enclosures. Included in this category are room partitions, water closet dividers and the like. For secondary bathrooms and smaller budgets, we offer many standard models of framed, semi-framed and sliding enclosures. To seal and protect these glass enclosures and ease the burden of overall maintenance of the glass, we can treat your new enclosure with Diamon-Fusion®. Our comprehensive showroom includes a wide variety of models and options to assist in your selection process and is continually being updated to include the latest innovations on the market. In addition to enclosures, we sell and install vanity and wall mirrors as well as miscellaneous glass products such as table tops, bar shelves and backpainted glass. We stand behind our installations 100%.


Realizing that a company is only as good as its employees, we feel very lucky to have the finest. They are not only considered a company asset but extended family. All are ready to assist you with your bath enclosure needs from product selection to ordering and installation.

Affiliations & Awards

CB Showers Inc enjoys membership in the National Glass Association, and is a Better Business Bureau accredited business. We are very proud to have earned Diamond Certification  every year since 2003 for Quality, Customer Satisfaction and Trust. We received three “Best Design” awards from BEMA (Bath Enclosure Manufacturers Assoc) in 1997, 2006 & 2008.


We service the Peninsula from San Francisco to San Jose as well as the coast from Pacifica to Pescadero. When you are ready to complete the bath retreat of your dreams, please give us a call or visit our showroom.