InsulGuard Cavity Shield is a unique, locally made cavity wall insulation designed for Australian homes with a double brick cavity. Uninsulated, a double brick cavity offers little barrier between external temperatures. Cavity Shield sits between the inner skin and the outer skin of your double brick walls inside the vacant cavity. This creates a thermal break between the two brick skins, reducing heat transfer and protecting your home from external temperature changes.
Not dissimilar to a bean bag bead, Cavity Shield is made predominately from expanded polystyrene. No different from how a thermos keeps your coffee warm, or an esky keeps your beers cold, polystyrene is one of the most widely used insulators in the world.
We add graphite to the polystyrene which not only gives it the grey colour, but also increases the thermal performance of the product.