External Wall Insulation Association
PO Box 12 Haslemere Surrey GU27 3AH
Tel: +44 (0)1428 654011
Fax: +44 (0)1428 651401
Chairman (Exec): Gillian A Allder MIPR


  • This Association represents the external wall insulation industry, initiating and upholding technical and professional standards. It promotes systems proven in the UK and experienced specialist installers.
  • External wall insulation is used in refurbishment to clad the outside of solid and defective walls for thermal insulation and weatherproofing purposes. Around 25% of heating costs can be saved.
  • It is also used as a simple, speedy and effective new build process, offering a wide range of interesting and advanced finishes. Building Regulations require a u-value of 0.45W/m²K for the walls, easily achievable with external wall insulation.
  • Professional installer members, trained in this highly skilled process, are essential. Systems are installed to EWIA Codes of Practice and British Board of Agrément Certificates and an industry BBA surveillance scheme is promoted.
  • EWIA offers technical and product literature, an insurance - backed guarantee scheme and Registers of Systems and installers.