Block Fill Insulation 24# Bag

Jones & Sons Verified independent store

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Ryolex is a high-performance, industrial-grade expanded perlite designed to provide superior thermal insulation and energy efficiency for a wide range of applications. Created by h eating crushed perlite until it expands into lightweight "macroparticles" with a multi-cellular glass structure, this all-natural mineral is non-combustible, non-toxic, and non-carcinogenic. Its unique ability to flow easily into odd-shaped spaces makes it an ideal loose-fill solution for masonry and cinderblock walls—reducing heat transmission by 50% or more—as well as for chimney linings, under-slab insulation, and cryogenic environments. With a high fusion point of 2300°F and a chemically inert profile, Ryolex offers a sustainable, low-density insulation choice that significantly boosts R-values while ensuring long-term structural safety. Show more