This is derived by on-site mixing of our two basic chemicals, MDI & Polyol; and spraying the chemical in liquid form onto a surface for it to solidify. The spray foam expands to seal all cracks and crevices, providing a seamless air barrier. It is generally applied using a small volume, pressurized containers. It is used to seal doors and windows in construction. Insulate pipes, roofs, cavity filling. The beauty of spray foam is that it takes up the shape of what you’re insulating, thereby reducing the chances of low thermal conductivity.