Abstract: A composition for manufacturing a product, comprises: finely subdivided inert materials, a metal oxide, a metal chloride, a resin, a thickening agent, a surfactant; a method for manufacturing a product comprises: mixing a solution of metal chloride with a metal oxide and finely subdivided inert materials, so as to obtain a mixture; adding to said mixture a resin, an a surfactant; pouring said mixture into a mould in such a way as to impregnate a fibre material sheet positioned inside said mould; enabling said mixture to solidify, so as to manufacture said product.