A layered thermal insulation system generally conformable to three-dimensioned surfaces of heat-producing elements in need of insulation is described. The system comprises:



i) an inner high temperature resistant insulation layer;
ii) an outer high temperature resistant insulation layer adjacent the inner high temperature resistant insulation layer; and,
iii) a first reflection layer and a second reflection layer. Each of said reflection layers is formed of a material selected from a group consisting of metal foils and are provided with a plurality of dimples and/or protrusions. The first reflection layer is adjacent the inner high temperature insulation layer such that, in use, an opposing surface thereof is in close proximity to said surfaces of said element to be insulated. The second reflection layer is adjacent to the outer high temperature insulation layer such that, in use, an opposing surface thereof comprises an exposed surface having a lower temperature than said surfaces of said element.