PIR (Polyisocyanurate) plasterboard is the insulated plasterboard commonly associated with the term. It boasts a rigid foam ...
When it comes to what's in insulation and what it's made of, the answer will depend on the type of insulation. Its make up, ...
I live in a 1960s bungalow which I have insulated as much as I am able to (proper thickness loft insulation, blown polystyrene wall cavity insulation and double-glazed doors and windows). My problem ...