Clearly Sustainable

The inherent properties of glass make it a strong sustainable solution for the design professional. Recycled glass surfaces meet high performance criteria for quality and durability. The checklist for selecting the best recycled glass surface includes the following:

• Ease of maintenance:  A recycled glass surface can be cleaned with a damp cloth, liquid soap or mild detergent.  Used as a countertop it requires periodic sealing like granite and other stone. For surfaces that do not need to be water repellent a zero VOC sealant can be applied, for most countertops, low VOC sealants should be used.  Surfaces will require occasional waxing for enhanced stain resistance, however, glass by its nature is vitreous and non-staining.

• Heat resistance: A resin-based surfaces such as quartz and solid surfaces can withstand only up to 300 degrees F however, recycled glass surfaces can withstand temperatures of over 600 degrees F making them superior surfaces for kitchen counters.  The process of combining the thermal properties of cement with the thermal properties of glass creates a product with superior thermal resistance.^vii

A subtle, multi-colored glass counter created from a mix of glass bottles contribute to the modern design of this kitchen. Photo courtesy of Polycor Vetrazzo Inc.

• Durability: Recycled glass surfacing is similar in density to granite. It has greater strength than concrete or marble. Some recycled glass surfaces have 10-year warranties. 

• Scratch Resistance: Recycled glass surfaces have been tested and found superior to marble or solid surfaces for scratch resistance and they are comparable to stone surfaces.  As mentioned above, glass is highly resistant to scratches falling between a 6 to 7 on the Mohs scale.

• Stain Resistance: The porosity of recycled glass surfaces is better than concrete and similar to marble because glass itself is an inert substance impervious to stains.  Although most of the surface is comprised of glass,  regular sealing will extend performance.

• Colorfastness: These counters can be used near windows, skylights and outdoors.  Recycled glass surfaces with cement binders are impervious to UV light, unlike polyester resin binders that may be prone to discoloration.

• Standard Fabrication: Recycled glass surfaces use the same equipment and techniques as those used for natural stone. Fabricators who work with stone find it easy to fabricate recycled glass surfaces however Manufacturer training and certification is key. As with any high-end material, the fabricator should measure thrice to cut once. Because of the unique quality of the glass mosaic pieces, the installer may need to cement inlays to fit. Recycled glass panels are typically 1’ 1/4 thick and do not require a plywood substrate. A variety of edge profiles, are available and skilled fabricators can work with the client to determine which profile is best for their project. Typically same skilled craftsmen who work with granite, etc. can expertly fabricate recycled glass surfaces. Standard tools like CNC machines and gantry saws can be used to install counters. Training and certification are important so look for brands that support their network of fabricators.

• Food safety:  Some recycled glass surfaces are tested and certified by NSF for food safety and can be used in numerous commercial applications.

• Freeze Thaw cycle: These surfaces can be used outdoors as cladding for outdoor furniture and wall surfaces. When installed outdoors during the winter season in cold climates, the product should be covered up.

This outdoor kitchen at Sunset Magazine’s headquarters in Menlo Park, California was clad with recycled glass surfaces. Proper sub tops will prevent cracking. Photo Courtesy of Andy Ferguson