By installing an External Wall Installation System on your property, you are increasing its thermal performance.  This is both cost effective, saving up to 40% on your heating bills in addition to being more environmentally friendly. All of our EWI systems are over-coated with aesthetically pleasing custom finishes. All of our EWI systems are backed with a minimum 10 year guarantee and are issued with a BBA (British Board of Agrement) certificate and are compliant with current building regulations.