Vermiculite is a naturally occurring mineral that is often used in various applications, including construction, gardening, and insulation. It is a lightweight and porous material that expands when heated. In construction, vermiculite is commonly used as a loose-fill insulation material. It is poured into wall cavities, attics, or other areas where insulation is needed to enhance thermal efficiency and reduce heat transfer. Vermiculite is also utilized in horticulture as a soil amendment or growing medium due to its excellent water retention and aeration properties. It helps improve soil structure, retain moisture, and promote healthy root growth. With its versatility and beneficial properties, vermiculite plays a valuable role in multiple industries.

With the introduction of cost-effective, easy-to-use, high-efficiency ceramic insulation, perlite is no longer necessary in wood oven construction.