A wall element with a heat-insulating core and a continuous support matrix, said heat-insulating core made of heat-insulating materials with strength sufficient to enable formation of said continuous supporting matrix, for which, during its production, it forms part of a mould, said wall element comprising two parallel faces and two parallel sides perpendicular to said faces, the heat-insulating core containing face blocks, that are disposed next to said faces of said wall element and penetrating inside said wall element, side blocks forming part of the side surfaces of the element and penetrating inside the element, and internal blocks, that are disposed inside the area that is defined by said face blocks and said side blocks, said heat-insulating core containing connecting members (4, 5) that connect said face blocks with said side blocks and with said internal blocks, said connecting members (4, 5) further connecting said side blocks with said internal blocks and further connecting said internal blocks between them, the heat-insulating core further integrated by means of interpenetrating shapes and forces of adhesion of said blocks with the continuous supporting matrix, wherein the continuous supporting matrix forming the faces and part of the side surfaces of the element, the continuous supporting matrix filling the spaces between the blocks of the core and containing longitudinal face walls, that form the faces of said element and longitudinal internal walls (7, 18), said longitudinal face walls and said longitudinal internal walls being interconnected by means of direct joints, namely: face side joints, interfacial side joints, middle-line joints, and/or off-middle-line joints, and/or interconnected by means of perpendicular transverse walls with a direction perpendicular to the faces of the element, namely: side walls, interfacial side walls, middle-line walls and/or off-middle-line walls, and/or interconnected by means of Z oblique transverse walls with a direction oblique to the faces of the element, namely: oblique walls connected with said longitudinal walls by means of oblique middle-line joints and/or oblique off-middle-line joints, whereby the middle-line is defined by a line in the middle of the element, perpendicular to said faces, whereby said wall element contains at least two internal blocks, wherein the widths (A 1, A 2) of each of said internal blocks along lines that are perpendicular to said faces of said element at a first point of contingence of a direct joint, of a perpendicular transverse wall or of an oblique transverse wall oblique to the faces of the element to the longitudinal surface of the respective internal block, is smaller than the distance defined along a line between said first point of contingence of a direct joint or perpendicular transverse wall or oblique transverse wall oblique to the faces of the element abutting the longitudinal surface of the respective internal block on one side of the internal block and a second point of contingence of a direct joint or perpendicular transverse wall or oblique transverse wall oblique to the faces of the element abutting the longitudinal surface of that internal block on the other side of the respective internal block that is located opposite to said one side along a line perpendicular to the faces of said wall element, whereas the direct joints, perpendicular transverse walls or oblique transverse walls that connect one pair of adjacent longitudinal walls (6, 7, 18) are spaced from the middle line of the element at a distance different from the distance between the middle line of the element and direct joints, perpendicular transverse walls and/or oblique transverse walls that connect the next pair of adjacent longitudinal walls.