Become an Installer

Become a Trustmark Registered Business

TrustMark is the only UK Government-Endorsed Quality Scheme for work carried out in or around the home. 

Since they started in 2005, they have been working to help drive up standards across the industry and improve the protection offered to homeowners when having work done. 

They’re a not-for-profit business which means they can focus on their customers – homeowners and tradespeople - and not on shareholders.
Planning permission LABC Certified Guardian Warm Roof Installers
Guardian Building Systems became a Trustmark scheme provider in January 2025. This means we commit to meeting operating requirements of their Quality Scheme. 

As a Certified Installer we can work with you to ensure that you meet and maintain the required standards of technical competence, trading practices and customer service.
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These practices help to provide assurance and confidence for homeowners when they engage a TrustMark Registered Business and for trades, it helps to demonstrate their quality and professionalism.

If you want to demonstrate your commitment to high standards of work and customer service, you can apply to join TrustMark through us.
Charter

Key Reasons We Work With TrustMark:

  1. Commitment to Quality:

  • Quality Assurance
  • High standards of competence, customer service and trading practices
  • Driving up standards across all trades

 

  1. Giving our Registered Businesses access to new work opportunities:

  • Working with third parties to create new work opportunities
  • Exclusive finance and cashback options for tradespeople from leading financial institutions
  • Recommended by one of the UK’s leading architectural practices, RESI

 

  1. Commitment to Protecting the Consumer:

  • Giving homeowners the confidence that they’re protected
  • Support for businesses and customers if things go wrong
  • Access to support, training and an independent Ombudsman to help resolve difficultcomplaints

  1. Access to Government Funded Schemes

  • You need to be TrustMark Registered to access Government funded schemes, such as; Energy Company Obligation (ECO), Great British Insulation Scheme (GBIS) and the Social Housing Decarbonisation Fund (SHDF)

As well as giving you:

  • Exclusive cashback offers for your customers
  • Eligibility to join their national Trading Standards Approved Scheme
  • Access to support, training and an independent Ombudsman to help resolve difficult complaints
  • Simple, free and legally approved contracts

With over 500,000 unique visitors to the TrustMark website each year, it’s easy for customers to find your business. Through TrustMark’s ‘Find a Trader’ online directory, customers can easily find your business. With your unique profile, you can link to your website, manage customer enquiries, manage your presence and build positive feedback.

Grow Your Business – With TrustMark’s Free Portal

Whether you have your own website or social media channels, your free TrustMark Business Portal is yours to promote and an opportunity to share your expertise with both new and existing customers.

Let customers know the areas you cover and showcase up to 30 images of previous projects you're proud of, increasing your chances of local homeowners finding your business.
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