What is GlassPass?

GlassPass is a first of its kind up-cycled glass certification service. A service that provides a Glass DNA database that collates, tags and tracks certified glass products. 


Starting with your mobile phone you can buy and read our unique GlassPass certified ID tags to print on certified glass products,  to use and access our database to help bridge the gap to ensure the glass is efficiently recycled, reused on your own projects or sold in future. Certified products include internal and external windows, balustrades and much more. 


This simple yet unique database and tagging system aims to create a community of glass manufacturers, facade engineers, landlords and architects, by introducing an environmental certified glass seal (soon to be recognised by ISO 14025*) to encourage the use of recycled glass, improve sustainable procurement, reduce waste, and demonstrate commitments to the environmental aspirations of our customers within the construction industry.




Why GlassPass?

The UK construction industry generates around 200,000 tonnes of glass waste every year [1].

Despite having the potential to be remelted indefinitely, end-of-life construction glass is very rarely recycled into new flat glass.

Most of the construction glass waste goes either to landfill or is crushed and mixed with other aggregate materials. From the construction glass waste that is collected from the demolition site and taken to a recycling plant, most of it is downgraded and only a very marginal percentage is sent back to flat glass manufacturers to be remelted. Almost the entirety of the glass currently recycled by glass manufacturers comes either from their own plant or off cuts retrieved from window manufacturers, not glass that was installed. See diagram below.

"UK generates 200,000 tonnes of glass waste annually"[1]

Currently, the main obstacles to recycling construction glass waste are ensuring the quality of the glass that is retrieved and that it contains no contaminants. Any contaminants within the recycled glass cullet could lead to a defective product batch, production loss and additional glass waste [1].


GlassPass helps sorting and identifying the composition of the glass so that it can be properly disassembled, stored and transported back to glass plants to be remelted into new glass.

"Contaminated Cullet could lead a defective product batch and additional waste"

By using Glass Pass and including recycled glass on glass production you will be:

  • Saving natural resources, by reducing the need of raw materials in the production;

  • Reducing carbon emissions ( 1 tonne of cullet saves 1.2 tonnes of raw materials and 0.3 tonnes of CO2 [1]).

  • Reducing energy consumption. For every 10% of cullet used, 3% less energy is used [3] (Saint-Gobain estimates that their inclusion of 40% cullet has saved 15% energy).;

  • Reducing waste sent to landfill and saving in related landfill taxes;

  • Saving in the overall life of the furnace, as the decreasing melting temperatures and a less corrosive batch can increase the life of the furnace by 30% [2].

Current Pending Certifications

  • ISO Certification 

  • EPDM 

  • BREEAM accreditation 


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