To maintain the thermal performance, closed cell foam typically emits less than 2% of the foam blowing agent annually. When injected into or sprayed upon the foam precursors, the blowing agent, which can be either a liquid or a gas, dissolves in them and expands to form the foam. Because the formulation has a significant impact on thermal efficiency and overall performance, optimization is essential. The blowing agent migration out of the foam, which increases its thermal conductivity, is minimized by choosing the foam blowing agent and foam matrix, which may be connected to impermeable metal facings. Low thermal conductivity foam Blowing Agentscan enhance the foam’s insulating qualities, enabling either improved thinner profiles for the same insulation value or improved insulation performance. Blowing or foaming agents are chemicals that quickly vaporize or break down at specific temperatures, releasing enormous amounts of gases or vapors. As a result, they might be classified as chemical blowing agents or physical blowing agents.