Core-Fill 500™ is a superior insulation material used in commercial and industrial construction, and has excellent thermal and acoustical properties. This product has proven itself for over 35 years, making it America's most commonly specified and installed thermal and masonry foam insulation. We have the most extensive certified dealer/insulation contractor network in the industry which has installed our product in more than 100,000 new and existing commercial and industrial construction projects throughout the United States.