Hajjar says: "As well as being waterproof and fireproof, it’s also insect proof and offers good thermal and acoustic insulation. It will not rot, warp, or corrode.” Unlike concrete which is hard, heavy, cold and difficult to work with, AirCrete is easy to use and dries overnight. The inventor claims that it has “sufficient strength to make excellent foundations, subfloors, building blocks, poured walls etc and can be moulded to practically any shape.” Plus it can be cut, carved, drilled and shaped with wood-working tools, so it is easy to repair.