Piles of waste awaiting crushing
Marley Roofing - Sustainable Factory Waste
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Harris Vallianatos
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Marley Roofing has instigated a significant program to reduce waste at source, including the crushing of concrete waste and re-use as a partial replacement for aggregate. This has achieved savings of 15,000 tonnes aggregate/year.
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Overview
In the mid 1990’s Marley Roofing set itself a challenge to become the environmental leader in the building materials sector. This is being realised through numerous environmental improvements at all sites and through working with the Building Research Establishment (BRE) to develop life cycle assessment data for all its products.
Customers:
• Can be reassured that all Marley’s products are produced in an environmentally responsible way
• Can specify any product from Marley’s roofing range to achieve credits in BREEAM and EcoHomes
• Can be assured that the environmental impact of Marley’s products is kept to a minimum
Marley:
• Is leading the way by having Life Cycle Assessment (LCA) data for all of its products
• Is reducing the environmental impacts of its products
• Is influencing the supply chain by running CPD seminars on sustainable pitched roofing.
Marley Roofing has instigated a significant program to reduce waste at source. At our Beenham site, concrete waste is crushed and re-used as a partial replacement for aggregate. This not only reduces disposal to landfill, but also achieves savings of 15,000 tonnes aggregate/year.
In addition, an earlier project has successfully treated pigmented waste water, saved on tanker disposal of waste, whilst at the same time re-using treated water in the process. However, this latter initiative still resulted in solid filter cake having to be disposed of to landfill.
This project describes how the site has taken the next step, combining waste streams in order to provide the factory with a sustainable solution to the problem of disposal of pigmented slurry waste arising from its production processes.
Benefits realised have included:
• Elimination of a hazardous waste stream, previously sent for landfill
• Reduction in waste costs
• Elimination of a bulk waste storage facility
• Elimination of a risk of leakage of semi-liquid waste to groundwater
• Improved housekeeping
• Reduction in lorry movements
The solution has seen waste handling costs reduce by 50%, saving £25,000 per annum and diverting 288 tonnes of hazardous waste from landfill.
» Read the full project case study (PDF)
In 2001, Marley was the first company to be awarded Certified Environmental Profiles and certificates (based on Life Cycle Assessment data) under BRE’s Certified Environmental Profiles Scheme.
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materials
transport
waste initiatives
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