In England, a temporary restriction on using flammable materials in cladding systems was imposed in November 2018, however it only applied to buildings taller than 18 meters. Unless the government is persuaded to alter its mind during the consultation, the restriction will be extended to all residential constructions taller than 11 meters. In Scotland, legislation on this matter is planned to be introduced into Parliament in 2019. The proposed Cladding Materials (Scotland) Bill would require manufacturers and suppliers of clad products to ensure that they cannot be used as an accessible route for fire to spread from building to building. In Wales, there are no current plans to introduce any new laws on this matter. In England, there are two main types of clad material that can be used in building construction. One type is called composite material, which is made up of layers of wood or plastic bonded together with resin. The other type is called metal panel, which is made up of sheets of aluminum, steel, or other metals that have been coated with both paint and adhesive to form a single unit. In general, composite materials are considered better insulated than metal panels because they include some organic components (such as wood) that provide some resistance to heat flow. However, they can also produce toxic gases when burned, so they should not be used in structures where access may be limited by smoke, for example, in apartment blocks or hospitals.