Fi-Foil M-Shield is a high performance reflective insulation solution for mold & mildew sensitive projects. An industry leading paperless masonry wall insulation, M-Shield contains no cellulose thereby eliminating the food source for mold growth. A green factor for wall systems, M-Shield improves air quality and the low-e surfaces enhance air space for greater energy efficiency. Learn more at Fifoil.com/mshield.