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Replacement Windows in St. Louis

Welcome to Masonry & Glass Systems

Masonry & Glass Systems is committed to be the “Contractor or Supplier of Choice” through product, service and installation excellence. Our emphasis is on being a responsible, innovative business partner providing value added services to our customers.


Masonry & Glass Systems was incorporated in the state of Missouri in 1980. It’s first location and current home office is at 1503 S. Kingshighway in St. Louis, MO.

1985 was an important year as Masonry & Glass opened its other location to Houston, Texas. As popularity of glass blocks increased in the Texas market, the company took the opportunity to expand to San Antonio, Texas in 1997.

Today, Masonry & Glass Systems and Masonry & Glass Systems of Texas are one of the nation’s leading glass block distributors and fabricators. The firm services the glass block requirements of contractors, dealers, homebuilders, remodelers and consumers. In all of its locations, Masonry & Glass Systems offers large inventory for same day pick-up or delivery, custom installation service, design assistance, pre-fabricated glass block windows and shop at home service for the consumer.

The company, in 1993, at its St. Louis location, diversified into the window and entry door replacement business.  Today, Masonry & Glass Systems is a prominent buyer of the Restorations window by Sunrise as well as a volume purchaser of replacement entry doors from Pro Via Door.   The company in 2006 was awarded the distributorship for Wedi which is a shower system that is mold proof and leakproof.  Both St. Louis and our San Antonio offices stock Wedi products for immediate delivery.  Recently, the St. Louis location added another innovative product, Rhino Gutter Protection, as system that prevents clogs in gutters at a reasonable cost.

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