Glass Forever – Principle Demolition: Sustainability First Ethos

gf solid green 2025

Principle Demolition undertakes a wide range of soft strip and structural alteration contracts, consistently delivering high-quality and efficient services. Committed to expanding its glass recycling capabilities, Principle Demolition collaborated with the Glass Forever team at Saint-Gobain Glass to collect waste glass material from 40 Grosvenor Place, London.

Constructed between the mid to late nineties, Grosvenor Place is a six-storey building featuring a communal central atrium with oces on other levels. Principle Demolition’s project involved the soft strip and salvage of approximately 14,000m2 of office and retail areas back to the shell over five floors, while the ground and first floors remained fully occupied and operational with existing tenants.

Sustainability first ethos

Principle Demolition operates with a sustainability-first ethos, and Glass Forever demonstrated an efficient and effective glass collection methodology. Under the Glass Forever programme, it was calculated that for every tonne of recycled cullet collected from a site, 1.2 tonnes of virgin raw materials would be saved. This approach has significant long-term benefits for conserving natural resources, making Glass Forever’s circular economy principles a sensible standard practice.

Principle Demolition swiftly integrated the Glass Forever programme into its operations. Within 48 hours of the initial site visit, they began collecting the first load of cullet using roll-on, roll-off (RoRo) skips. This efficient recovery method allowed the entire collection process to be completed in just three weeks.

A highly motivated team

Richard Calcutt, Technical Project Manager at Saint-Gobain Glass, commented on the success: “The Principle Demolition team approached this project with high levels of motivation. They were well into their deconstruction work when we joined, and they employed clever collection and segregation methods. They understood the importance of preventing cullet contamination and effectively transported it off-site. In just three weeks, we recovered 41.9 tonnes of glass from the site, saving 50.3 tonnes of virgin raw materials and 29.3 tonnes of CO2. A fantastic result.”

“With sustainability and the circular economy foremost in our approach to carrying out and completing the numerous soft strip and structural alteration jobs we do; working with Saint Gobain Glass enhanced our ability to achieve the highest possible recycle rates for this project. Glass, among the various waste streams of materials and products we handle, can now be recycled for as long as possible, thanks to collaborations like this.” Rob Unwin, Contracts Manager at Principle Demolition Ltd.

Other case studies you might like

glass forever
glass forever
glass forever
glass forever
glass forever
glass forever
glass forever

Glass Forever – John F Hunt: Collaborative Success

In the spirit of advancing sustainable practices within the UK construction industry, Saint-Gobain Glass is working collaboratively with John F Hunt, a respected construction firm with a heritage dating back to 1982 to implement our Glass Forever programme. This partnership reflects a shared commitment to circular economy principles, environmental responsibility, and a collective vision for promoting transformative change.

img 5182
img 5190
img 6691

Glass Forever – General Demolition: Building a Sustainable Future

Established in the mid-1970s, General Demolition provides deconstruction and enabling works across London and the home counties. The company’s expertise encompasses strip-out, cut-and-carve, and total demolition works in and around central London. With a recycling heritage exceeding 30 years, notably at their Walton on Thames site, General Demolition is richly poised for continued growth, having achieved an increased turnover of £15 million in 2024.

water house square glass recycling
water house square glass recycling
water house square glass recycling
water house square glass recycling

Glass Forever – Salter Demolition: Glass Recycling Excellence

Seeking to enhance their existing repurpose and recycling approach to sustainability, the team at Salter approached Saint-Gobain Glass with a keen interest in participating in the Glass Forever Programme for the historic Waterhouse building in Central London. With the support of the client M&G, Salter Demolition enthusiastically embraced the opportunity to actively engage in the programme, identifying Saint-Gobain Glass as the ideal proactive partner.