British Board of Agrement
Certification body for most CWI systems

Communities and Local Government (CLG) Building Regulation pages

CWISC Competent Persons Scheme
Competent Persons Scheme operated by CIGA

Department of Energy and Climate Change
Operate Grant and Carbon Emissions Reduction Target Commitment initiatives

Energy Savings Trust
Installing CWI

National Insulation Association
The definitive voice of the insulation industry