Some companies include polystyrene beads into concrete blocks, while others make concrete blocks that accommodate rigid foam inserts. You may be qualified for ECO4 should you are living at personal domestic premises and they are a member of the Help to Heat Team (HTHG). Membership with the HTHG entails receipt https://freeecogrants.co.uk/what-you-should-know-about-solar-energy-grants-uk/