Cost of Double Glazing Installation
across the UK

# Double Glazing Installation Trade Body Accreditation

The main UK trade bodies overseeing double glazing installation include the Double Glazing and Conservatory Ombudsman (DGCO), Fensa, and the Glass and Glazing Federation (GGF). Fensa is a government-approved scheme that certifies installers meet Building Regulations standards, while the GGF is an industry association that vets member companies for technical competence and business practices. The DGCO provides an independent dispute resolution service specifically for the double glazing sector. Additionally, some installers may hold membership with Trading Standards or be certified by schemes like TrustMark, which identifies vetted traders across various home improvement services. Understanding these designations matters because they indicate different levels of regulatory oversight, insurance cover, and recourse if something goes wrong. Fensa registration, for instance, means a company's installations have been checked for compliance with current Building Regulations, which is a legal requirement for any double glazing work in England and Wales.

To verify a provider's credentials, ask for their scheme membership numbers and check directly on the relevant organisation's website—Fensa and GGF maintain public registers of accredited installers that you can search by postcode or company name. Request evidence of their insurance, particularly public liability and guarantee coverage, as this protects you financially if the installation is faulty or causes damage. You should also ask how long their workmanship guarantee lasts and whether it's insured-backed, meaning a third party guarantees the promise if the company goes out of business. Don't rely solely on testimonials or reviews; accreditation provides independent verification that a company meets industry standards rather than relying on self-assessment. It's worth noting that rogue traders often make false claims about accreditation, so verification through official registers is essential.

Accredited double glazing