Block walls in present houses could be insulated from the inside. Check out insulation materials To find out more concerning the goods generally accustomed to insulate concrete block. You're going to be qualified for ECO4 should you live at personal domestic premises and therefore are a member of the Help https://freeecogrants.co.uk/how-to-find-a-genuine-agency-to-get-help-to-receive-eco-grants-wales/