Thermal protective system

A fire wall comprising a core of sheet mesh, an active thermal protective material applied in a continuous layer on each side of said mesh core, and a self-stiffened mesh applied to the exterior of said active thermal protective material, said self-stiffened mesh including a plurality of ridges formed integrally in the mesh.

A method of protecting a substrate from thermal extremes by applying a thermal protective assembly to the substrate, said method comprising, in a desired order, a step of applying an active thermal protective material to one side of a mesh, leaving the other side of the mesh at least partially exposed, the at least partially exposed side of the mesh including an integral spacer, and a step of placing the mesh around the substrate as an envelope with at least a part of its integral spacer in contact with the substrate, said integral spacer spacing the thermal protective material, through a major part of its extent, from the substrate.

A fire wall comprising a core of relatively heavy sheet mesh, a continuous layer of an active thermal protective material on each side of said mesh core, a relatively light mesh applied to the exterior of said active thermal protective material on at least one side of said core, and a relatively light mesh support structure having a plurality of spacers formed integrally therein, said spacers being in contact with said core and holding said thermal protective material, through a major part of its extent, spaced from said core.