INCA represents the external wall insulation (EWI) industry and our members are at the forefront of innovation and design and reflect the highest quality standards. Click on the boxes below to find an INCA Contractor member in your area or to find out more about our System Designer and Associate members.


INCA Contractors must meet the INCA criteria for membership and operate in accordance with the INCA Code of Professional Practice. INCA Contractors have a proven track record of delivering EWI projects including private homes, social housing and non-residential.

System designers

INCA System Designers design, manufacture and supply certified external wall insulation systems in a range of insulation materials and finishes to meet the needs of the UK market.


INCA Associates manufacture and supply the key component parts which go together to make up the range of external wall insulation systems.


Worcester High Rise, Worcester - Domestic Refurbishment - High Rise: Winner

External wall insulation offers a wide range of solutions to suit every type of project.

Click here to view award-winning EWI projects by INCA members