The Bluewind Vermiculite Insulating Firebrick is a state-of-the-art building product that has been specifically developed for use on industrial furnaces. These insulating bricks expanded with silver vermiculite non asbestos are light weight and excel in thermal insulation while also resisting deformation at high temperatures. These bricks with controlled pore structure can be effectively used as transitioning refractory lining or backup thermal insulation significantly improving the service life and performance of the industrial furnaces for various industries.