Fallon Tuttle May 18, 2020 We've made a splash...gb&d Summer ’20 feature! Fallon Tuttle May 18, 2020 Rmax has been featured in the gb&d Summer ‘20 magazine! Find out how polyisocyanurate (polyiso) can be used as an air and water barrier, as well as why it’s fast becoming a preferred material for sustainable building and design. gb&d Summer 20' feature: Rmax