2400mm x 1200mm
Polyisocyanurate (PIR) is one of the most efficient insulation materials used in construction. PIR insulation provides acoustic and thermal properties, rigidity, durability, and excellent compressive strength. These boards require approximately half the thickness of traditional forms of insulation to meet the same level of thermal performance.
Mostly known as Celotex, other brands are available and supplied.
They are simple and easy to fit and come in a wide range of thicknesses, to ensure you can find the board you need for your project.