TrustMark is a non for profit organisation which is licensed by Government and supported by various consumer protection groups.

TrustMark endorses local, ethical companies in a variety of trades which work within Governmental approved standards and guidelines.

Trust Mark

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The good news is that there is no cost to the consumer in using a TrustMark registered company. TrustMark credit checks all companies before joining their scheme so you can be confident you are dealing with a financially sound double glazing installer or home improvement company.

High Standard of Workmanship

Members are expected to perform to the very highest standards of workmanship as set out against recognised British, international and industry standards.

As a result, TrustMark carry out regular checks on their companies through their approved Scheme Operators which include a range of organisations such as trade associations, local authorities and trading standards.

The TrustMark Core Criteria

The TrustMark Core Criteria is reviewed and updated each year – this is an 18 page document setting out the standards TrustMark accredited companies must operate to.

The document includes:

  • Scheme Operator’s organisation
  • Members Code of Practice
  • Members assessment and monitoring
  • Customer care
  • Disciplinary processes
  • Warranty protection
  • Branding & communication
  • Monitoring by TrustMark Board

Why Choose A TrustMark Tradesman?

All TrustMark traders work to a code of practice set down by an approved Scheme Operator to give you greater confidence and protection. Registered firms are checked and monitored against recognised British and International industry standards which means you have peace of mind that you are dealing with a professional organisation.

Checked and Vetted

Before a company is even accredited with the TrustMark logo, they go through a series of stringent checks. Their record and financial position are investigated and once accepted, they continue to be independently checked through regular on-site inspections. This is to ensure that all members continue to meet a high standard of workmanship, quality and service.

Code of Practice

When companies sign up to TrustMark they must agree to work to a code of practice that includes insurance, good health and safety practices as well as customer care. The approved scheme operator will continue to monitor a member’s quality of work, trading practices and customer satisfaction for as long as they are a member of the organisation.

Avoid Rogue Tradesmen

If a double glazing company displays the TrustMark logo you know that they have been approved and inspected through a scheme operator. All accredited companies as part of the scheme are required to meet current UK Building Regulations.

Insurance Backed Warranty

All company members must also offer consumers an insurance backed guarantee or warranty. This is extremely important since this insurance policy covers you against certain problems if the firm should ever go out of business.

Each accredited company will offer a different warranty (depending on the product and type of installation) through their chosen scheme operator but TrustMark dictates that the warranty must at least cover the following points:

  • Pre-payments
  • Quality of Workmanship
  • Rectification of defects or major damage
  • Non-compliance with Building Regulations

The warranty offered must be designed for the individual home owner and it is a requirement that it covers most jobs between £500 and £50,000. The duration of the insurance cover must be a minimum of two years – longer subject to trade.

Deposit Protection Insurance

All TrustMark Tradesmen must offer some form of deposit protection insurance for their customers. This is to ensure consumers are protected in case of a company ceasing to trade.

Government Supported

The TrustMark scheme is fully supported by the Government, the building industry and consume protection groups so you can have complete peace of mind whenever you choose one of their accredited installers.

Double Glazing on The Web Recommended

If you are considering replacing your windows or doors or carrying out other home improvements to your property then it is very important that you choose an accredited company. At Double Glazing on The Web, we ensure that each of our trusted suppliers and installers are registered with appropriate industry regulatory and accredited bodies.

If you would like us to put you in touch with an accredited company local to you, then please call us on freephone: 0800 015 5679

Frequently Asked Double Glazing Questions

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