The record is subject to alter on occasion and probably the most updated is usually discovered on OFGEM’s Site. Some much less common free-fill insulation materials involve polystyrene beads and perlite. Free-fill insulation can be put in in possibly enclosed cavities for example partitions, or unenclosed spaces for instance attics. https://freeecogrants.co.uk/what-are-the-advantages-of-insulating-your-house/