A new insulation product with significantly improved thermal resistance as compared to conventional insulation products. Its thin profile, superb flexibility, and compression resistance allow for thermal protection in hard to insulate spaces. It can be easily cut and conformed to complex shapes and tight curvatures and adhered without difficulty to building products. An ideal solution for sealing tough connection points in building envelopes, such as where glazing systems meet cavity walls, where below grade systems meet above grade systems, and where parapets meet roofs. Building Insulation Blanket is also fire-resistant, hydrophobic and does not settle over time.