Sisalation foil wall wrap provides a radiant barrier between a hot surface and the area on the other side – e.g. between the exterior brick walls of a home and the internal walls and adjoining living areas. When installed properly, foil insulation will decrease the amount of radiant heat moving through the walls and into the building, which will then work in preserving the overall temperature inside the home to be stable and comfortable. Sisalation minimises draughts and is combined with bulk thermal insulation. This allows the insulation to be the most effective it can be.