Rooflock Exfoliated Vermiculite Powder, 25 Kg

Vermiculite roof insulation is a lightweight, fire-resistant, and non-combustible material made from expanded mica minerals, providing excellent thermal and acoustic insulation. It is commonly used as a loose-fill in attics or as an aggregate in lightweight concrete for roof screeds, reducing thermal conductivity and energy consumption. Key Aspects of Vermiculite Roof Insulation: Benefits: It acts as a fire-resistive barrier, reduces noise, is easy to apply, and can help keep buildings cool in the summer by reducing heat flow. Applications: It can be used as loose-fill in roofs/attics or mixed with cement to create lightweight, insulating concrete for roof decks. Performance: Vermiculite concrete improves thermal efficiency while reducing the dead load on building structures. Important Safety Warning: Older, loose-fill vermiculite insulation (particularly from the Libby, Montana mine, popular in the U.S. before the 1990s) may be contaminated with asbestos. It is critical to assume older insulation might be hazardous and avoid disturbing it. Alternatives: Modern vermiculite is generally safe and non-toxic, but testing is advised for older, existing installations. For installations, it is recommended that vermiculite concrete roof deck systems be applied by professionals familiar with the material.