A façade cladding system, comprising: - support profiles which are fixed to a façade structure, arranged in a horizontal position, said support profiles having a base portion which is applied against said façade structure and a cantilevered portion forming at its end a cradle; - panels which are supported by said support profiles, such that they are arranged parallel to said façade structure and spaced from same; said panels being prefabricated flat cement mortar panels provided with sleeves embedded in the cement mortar mass of the panel, each of said sleeves forming a hole visible on face of said panel facing said façade structure; - resting arrangements through which said panels rest on said support profiles, each of said resting arrangements comprising a rod which is inserted into one of said holes formed by a sleeve in a panel, and a resting part which is fixed to said rod and rests on a bottom of said cradle of the support profile; said resting part comprising a through hole snugly receiving said rod; - first fixing means (12, 13, 14) for fixing to said sleeve said rod inserted into said hole of the sleeve; - second fixing means (15, 16) for fixing said resting part to said rod; - said first fixing means (12, 13, 14) and said second fixing means (15, 16) being configured such that they allow regulating a gap between said resting part and the panel to which it is fixed through said rod; wherein said resting part comprises at least two resting sides, suitable to allow said resting part to rest on the bottom of said cradle alternatively through each of said resting sides, and said through hole snugly receiving said rod is at a different distance from at least two of said resting sides; characterized in that an identifying mark is made in said resting part next to at least some of said resting sides, the identifying mark next to a resting side being different from the identifying mark next to another resting side which is at a different distance from said through hole. - support profiles which are fixed to a façade structure, arranged in a horizontal position, said support profiles having a base portion which is applied against said façade structure and a cantilevered portion forming at its end a cradle; - panels which are supported by said support profiles, such that they are arranged parallel to said façade structure and spaced from same; said panels being prefabricated flat cement mortar panels provided with sleeves embedded in the cement mortar mass of the panel, each of said sleeves forming a hole visible on face of said panel facing said façade structure; - resting arrangements through which said panels rest on said support profiles, each of said resting arrangements comprising a rod which is inserted into one of said holes formed by a sleeve in a panel, and a resting part which is fixed to said rod and rests on a bottom of said cradle of the support profile; said resting part comprising a through hole snugly receiving said rod; - first fixing means (12, 13, 14) for fixing to said sleeve said rod inserted into said hole of the sleeve; - second fixing means (15, 16) for fixing said resting part to said rod; - said first fixing means (12, 13, 14) and said second fixing means (15, 16) being configured such that they allow regulating a gap between said resting part and the panel to which it is fixed through said rod;