The Aislamax Asphaltic Membrane is elaborated with oxidized asphalt and an aluminum coating which protects it from heat and grants an optimum UV rays reflection capacity and also prevents an early ageing. The set is an asphalt sheet suitable for outdoor exposure, resulting in a simple, quick and definitive waterproofing. It is a membrane used to solve waterproofing on surfaces where the membrane is exposed to the weather. Applied on flat or curved roofs which are not crossable, horizontal or sloping surfaces, terraces which are not easily reached (e.g. restoration, renovation), on roofs with a steep slope, on flat concrete slab and in some cases on sheet metal or fiber-cement.