20mm Foilboard Green has been engineered and designed to ensure a quick and easy installation of a non-itchy, fibre free rigid insulation panel that will provide continuous thermal performance for the life of the building. It is a superior insulant, thermal break, and non-permeable moisture barrier. With a 25-year performance guarantee, Foilboard Ultra 20mm is a great solution to bulk insulation. The material’s ability to create a more consistent ambient temperature means you are not reliant on inefficient artificial heating and cooling. This reduces energy use and the production of greenhouse gases creating a more sustainable future for all and saves you money.