New code of practice for external wall insulation installers

Latest News Fri, Oct 30, 2026 7:06 AM

INCA, the recognised trade association for the external wall insulation (EWI) industry in the UK, announces the launch of a new EWI installer member code of practice designed to help specifiers, contractors, clients and consumers identify and engage with trusted EWI industry professionals who maintain overarching values of quality, customer service, best practice and business excellence.

Developed by the members – for the members, all current INCA EWI installer members have signed up to the new code which will be a mandatory requirement for all new members to agree and adhere to moving forwards.

The new code of practice underpins the trade association’s work to promote high standards, best practice, competent installation and professionalism across the external wall insulation industry and defines precisely what is expected from an INCA installation contractor member in terms of:

  • Quality and Best Practice
  • Guarantees
  • Training and Competence
  • Environmental and Sustainability Policy
  • Health and Safety
  • Legal and Regulatory Compliance
  • Disputes and Conflict
  • Integrity, Behaviour, Ethics and Communication

John Sparrow, CEO of INCA said: “It’s important to recognise and not underestimate the role that a credible, trade association code of practice can play in raising standards, improving transparency and giving specifiers, clients and consumers greater confidence when commissioning works.

“It also helps distinguish the experienced, professional and responsible businesses from those who endanger trust, confidence and industry reputation.”

The new INCA Installer Member code of practice is in addition to the existing and extremely robust membership criteria which, on top of the standard business expectations, requires applicants to have a minimum of two years of direct industry experience and for quality and competence to be proven through references and historical works.

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