Perlite is a material commonly found in potting mixes. It is a volcanic glass with a fairly high water content. Perlite expands explosively when heated. Perlite is used in the ceramic industry to ...

Why bother adding a layer of insulation to a brick wall, if you can just build that wall using hollow bricks that are stuffed with insulation? That's the thinking behind self-insulating bricks which ...

Those little squishy white balls in your potting soil aren’t styrofoam. They’re actually perlite, AKA volcanic popcorn. In the building industry, perlite is used in ceiling tiles and lightweight ...