Perlite, a naturally occurring volcanic glass, is thermally expanded to form a low-density, porous aggregate prized for its insulating and lightweight characteristics. When incorporated into composite ...

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 ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images Whether you’ve been gardening for years or are looking to become that bit ...