Cladding is a material that is attached to the exterior of your home?s walls to form an outer weatherproof skin to the home. Cladding may be made of timber, masonry, fibre cement or metal. Newer products may combine several materials, such as insulated aluminium panels or poly-timber composite boards. Cladding systems need to be waterproof and should protect the interior of your home from the weather. They may also provide thermal and sound insulation, and be resistant to fire.