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The Double Glazing & Conservatory Ombudsman Scheme aims to protect consumers and improve the reputation of the glazing industry. Find out more about DGCOS by selecting the relevant page on the right.
Windows
Most properties lose heat through their windows, but energy efficient glazing keeps them warmer and quieter. Energy efficient windows can also make your home more comfortable and reduce your carbon footprint.
Doors
Doors are available in a range of modern materials including uPVC, Composite and Timber. Each material has its own benefits including thermal efficiency and acoustic performance. What's more Doors are available with a range of glazing options including Triple Glazing. Different types of doors include: French Doors, Bi-folding doors and Patio Doors.
Conservatories
Conservatories are a great way to add style and value to your home. They are available in a huge range of bespoke, classic and contemporary designs that can help open up your property and allow more light to enter.
Orangeries
Roofline
Roofline products are designed to protect your home from the elements that can lead to damp and mould on the inside of your home. Replacing your roofline with a modern uPVC alternative will prevent rotting, discolouration and improve the performance of your roof.
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Other products covered under the DGCOS scheme include garden rooms, garage doors and porches. Click on the relevant product to find out more.
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Double Glazing News | Date: July 2026

ISO 9001 Recertification Confirms Strength of DGCOS Quality Framework

The Double Glazing & Conservatory Quality Assurance Ombudsman Scheme (DGCOS) is pleased to announce the successful completion of its ISO 9001 recertification, with the external audit identifying zero non-conformances and no opportunities for improvement. This outstanding result demonstrates the strength, consistency and maturity of DGCOS’s quality management system and its commitment to maintain…