Business Details
Trusted Double Glazing & Conservatory Protection Scheme
The Double Glazing & Conservatory Ombudsman Scheme (DGCOS) has been a cornerstone of consumer protection in the glazing industry since its inception. Established to address the need for trusted dispute resolution and installer accreditation, we have safeguarded over 455,000 customers through rigorous vetting processes and comprehensive protection schemes. Our team of industry experts, supported by George Clarke - a renowned TV presenter and architect with over five years as our Brand Ambassador - ensures homeowners receive impartial advice and access to certified installers. We provide deposit and stage-payment protection insurance covering up to 5,000, insurance-backed guarantees ranging from two to ten years, and a robust alternative dispute resolution process.With ISO 9001 certification reaffirmed in 2025, our commitment to quality management systems demonstrates our dedication to maintaining the highest standards in consumer protection. Our operations are built on transparency, with clear terms for accessing ombudsman services and dispute mediation conducted by experienced professionals. Through continuous member vetting and collaboration with Companies House for verification, we maintain industry integrity while offering homeowners confidence throughout their home improvement journey.
Services
Double Glazing
Conservatories
Roofline Products
Orangeries
Window Installation
Door Installation
Garage Doors
Porches
Garden Rooms
Highlights and features
- Vetted installers with strict accreditation processes
- Deposit protection covering up to 5,000
- Insurance-backed guarantees for completed installations
- Expert mediators for dispute resolution
- Free access to independent ombudsman services
Associations and certifications
- ISO 9001
What people say
Vetted installers
Deposit protection
Expert mediators
Free ombudsman service
ISO 9001 certified
Services
Double Glazing
Our double glazing solutions significantly improve home insulation and noise reduction while maintaining aesthetic appeal. The service combines advanced thermal efficiency technology with comprehensive protection schemes for homeowners. Each installation comes with insurance-backed guarantees and access to our impartial dispute resolution process, ensuring complete customer satisfaction throughout the product lifecycle.
Conservatories
We accredit installers for bespoke conservatory solutions that add valuable living space and natural light to properties. Our members offer traditional and contemporary designs with full compliance to building regulations. Customers benefit from our financial protection schemes and expert mediation services should any installation issues arise during the process.
Roofline Products
Our accredited installers provide durable uPVC roofline solutions that protect against water damage and weather exposure. The service includes fascias, soffits and guttering systems designed to prevent damp and mould formation. All installations qualify for our financial protection schemes and dispute resolution services, ensuring long-term customer confidence.
Orangeries
We offer accreditation for premium orangery installations that combine traditional architectural elements with modern energy-efficient materials. Our members ensure structural integrity while maintaining aesthetic harmony with existing properties. Customers receive full access to our financial safeguards and impartial dispute resolution mechanisms throughout the installation process.
Window Installation
Our accredited installers provide comprehensive window solutions including casement, sash and energy-efficient double-glazed units. The service incorporates strict quality control measures and compliance with British Fenestration Rating Council standards. All projects qualify for our financial protection schemes and expert mediation services when required.
People
George Clarke
Brand Ambassador
Renowned TV presenter and architect with over five years' endorsement of DGCOS, advocating consumer protection in home improvements through his role on programmes like Amazing Spaces Shed of the Year.
Questions
What are the objectives of DGCOS?
We protect consumers by accrediting quality installers, providing financial safeguards, and offering impartial dispute resolution services for double glazing and conservatory projects.
How can I make a complaint?
Contact the installer directly first, then escalate to DGCOS if unresolved within 14 days. We offer free access to independent ombudsman services for eligible cases.
What types of complaints can be investigated?
We investigate complaints about service quality, contractual disputes, and installation issues that occurred during a member's active accreditation period.
What is the accreditation process?
Installers undergo credit checks, document verification, and compliance assessments before receiving accreditation covering specific products and services they offer.
How does the ombudsman service work?
Our free service provides binding decisions on members but not consumers, with investigations typically taking around eight weeks from receipt of complete documentation.
What financial protections are available?
Deposit protection up to £5,000 and insurance-backed guarantees ranging from two to ten years, subject to specific terms and conditions.
Reviews (7)
Michael Molloy
May 23, 2020
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After 2 years of back and forth between the DGCOS, their member company and the Ombudsman I've been left with an unfinished extension which according to the independent inspection carried out by the DGCOS has poor workmanship and requires remedial works to put right, no financial or insurance back guarantee and no other avenue except through the courts as the member company has already breached the Ombudsman ruling by not carrying out agreed works. All I have had is an apology for the way my case has been handled and that they will learn from this and no other customer will have my experience
Helen Kendall
May 08, 2020
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This Ombudsman Service is quite honestly a life saver!! An 100% amazing and free (yes free!! ) mediation service which is most definitely an essential requirement for everyday consumers, when thinking of purchasing Double Glazing/Conservatories. Please make sure your supplier is a member with the DGCOS, please!! When many others let us down, this Service did not. They are to the point, factual and steadfast where fair, unbiased consumer advice is required and this mediation resolution service is executed in a controlled, concise, efficient and highly effective manner, outstanding is an understatement
Rachel Ward
Oct 11, 2019
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This service was outstanding and an absolute godsend for us. We were dealt with professionally and, as you would expect, impartially but with a good level of sympathy given our circumstances. DGCOS put in a lot of effort to helping us out and provided good levels of communication and explanation throughout the process. Myself and my husband were very impressed with the service and words cannot express how grateful we were that it was available to us, all free of charge too. 10 out of 10.
Sarah Yorke
Oct 06, 2019
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After months of fighting with large companies 1 phone call and within the same day Tracy got me a resolution. She was polite helpful and most of all caring cant recommend them enough. Wish I had called them sooner. First class service from Tracy, prompt and efficient 5 stars as I cant give 10.
Linda Bowman
Sep 08, 2019
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We dealt with Tracy in a matter that has been going on for over 2 years With her first class help and assistance the matter was resolved within days We cannot praise Tracys persistence enough Outstanding service and first class manner and approach
Thank you so much Tracy
Kind regards Mr & Mrs Bowman
Thank you so much Tracy
Kind regards Mr & Mrs Bowman
Christopher Gale
Jun 06, 2019
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Having reached a point of impasse in endeavouring to resolve issues of poor workmanship and a leaking roof, we decided to utilise the services of DGCOS as a last resort before legal action. Fortunately, this decision proved to be the right one and we would like to thank Tracy for her intervention and resolving what could have been a long and expensive drawn out process. The matter was subsequently concluded to the satisfaction of all concerned and I would not hesitate in recommending this organisation.
Nick Wood
May 05, 2019
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It's been a pleasure dealing with DGCOS. Tracy Dilworth took up our case and she was extremely efficient and thorough. She put in a lot of effort researching all the necessary background issues and supported us fully when representing us to the company we were in dispute with. Tracy kept us informed all the way about the progress she was making with a cheerful, no nonsense manner. An excellent service, Tracy. We're really impressed and grateful to you. Thank you. Mr Wood, Derbyshire
