Method for simultaneously weaving two pile fabrics (C1, C2) with shadow cut pile zones on a face-to-face weaving machine, wherein: - an upper backing fabric and a lower backing fabric are woven one above the other with: - at least one filling warp yarns (f1, f2), - at least one binding warp yarn (b1, b1', b2, b2'), - weft yarns (Wi, Wb) inserted in successive weft insertion cycles (P1-P32) between binding warp yarns and filling warp yarns, the weft yarns comprising inner weft yarns (Wi), which are inserted on a pile side of the filling warp yarns, and back weft yarns (Wb), which are inserted on a back side of the filling warp yarns, opposite to the piles (D1, D2) of the fabric, - patterning pile yarns (PY; PY, QY) are interlaced in the upper backing fabric and in the lower backing fabric, each patterning pile yarn turning externally around an inner and a back weft yarns (Wi, Wb) in each backing fabric, - weft yarn groups (G1, G2), made of an inner weft yarn (Wi), a back weft yarn (Wb) and another inner weft yarn (Wi), are inserted in at least one backing fabric (F1, F2), in successive weft insertion cycles, and - at least one patterning pile yarn (PY; PY, QY) follows a path where: - in a first series of weft insertion cycles (P1-P13; P1-P16) and at least in a first backing fabric (F1, F2), the patterning pile yarn (PY; PY, QY) turns externally around a first inner weft yarn (Wi), then internally around a second consecutive inner weft yarn (Wi) before it turns externally around a consecutive back weft yarn (Wb) and - in a second series of weft insertion cycles (P19-P32) and at least in the first backing fabric (F1, F2), the patterning pile yarn (PY; PY, QY) turns externally around a back weft yarn (Wb) before it turns internally around a first consecutive inner weft yarn (Wi) and externally around a second consecutive inner weft yarn (Wi), characterized in that - two binding warp yarns (b1, b1', b2, b2') are used to bind all weft yarns (Wi, Wb) to the filling warp yarns (f1, f2) in at least one backing fabric (F, F2) and - all weft yarns of a weft yarn group (G1, G2) are inserted in a single opening (O1, O2) defined by the binding warp yarns. - an upper backing fabric and a lower backing fabric are woven one above the other with: - at least one filling warp yarns (f1, f2), - at least one binding warp yarn (b1, b1', b2, b2'), - weft yarns (Wi, Wb) inserted in successive weft insertion cycles (P1-P32) between binding warp yarns and filling warp yarns, the weft yarns comprising inner weft yarns (Wi), which are inserted on a pile side of the filling warp yarns, and back weft yarns (Wb), which are inserted on a back side of the filling warp yarns, opposite to the piles (D1, D2) of the fabric, - at least one filling warp yarns (f1, f2), - at least one binding warp yarn (b1, b1', b2, b2'), - weft yarns (Wi, Wb) inserted in successive weft insertion cycles (P1-P32) between binding warp yarns and filling warp yarns, the weft yarns comprising inner weft yarns (Wi), which are inserted on a pile side of the filling warp yarns, and back weft yarns (Wb), which are inserted on a back side of the filling warp yarns, opposite to the piles (D1, D2) of the fabric, - patterning pile yarns (PY; PY, QY) are interlaced in the upper backing fabric and in the lower backing fabric, each patterning pile yarn turning externally around an inner and a back weft yarns (Wi, Wb) in each backing fabric, - weft yarn groups (G1, G2), made of an inner weft yarn (Wi), a back weft yarn (Wb) and another inner weft yarn (Wi), are inserted in at least one backing fabric (F1, F2), in successive weft insertion cycles, and - at least one patterning pile yarn (PY; PY, QY) follows a path where: - in a first series of weft insertion cycles (P1-P13; P1-P16) and at least in a first backing fabric (F1, F2), the patterning pile yarn (PY; PY, QY) turns externally around a first inner weft yarn (Wi), then internally around a second consecutive inner weft yarn (Wi) before it turns externally around a consecutive back weft yarn (Wb) and - in a second series of weft insertion cycles (P19-P32) and at least in the first backing fabric (F1, F2), the patterning pile yarn (PY; PY, QY) turns externally around a back weft yarn (Wb) before it turns internally around a first consecutive inner weft yarn (Wi) and externally around a second consecutive inner weft yarn (Wi), characterized in that - two binding warp yarns (b1, b1', b2, b2') are used to bind all weft yarns (Wi, Wb) to the filling warp yarns (f1, f2) in at least one backing fabric (F, F2) and - all weft yarns of a weft yarn group (G1, G2) are inserted in a single opening (O1, O2) defined by the binding warp yarns. - in a first series of weft insertion cycles (P1-P13; P1-P16) and at least in a first backing fabric (F1, F2), the patterning pile yarn (PY; PY, QY) turns externally around a first inner weft yarn (Wi), then internally around a second consecutive inner weft yarn (Wi) before it turns externally around a consecutive back weft yarn (Wb) and - in a second series of weft insertion cycles (P19-P32) and at least in the first backing fabric (F1, F2), the patterning pile yarn (PY; PY, QY) turns externally around a back weft yarn (Wb) before it turns internally around a first consecutive inner weft yarn (Wi) and externally around a second consecutive inner weft yarn (Wi), characterized in that - two binding warp yarns (b1, b1', b2, b2') are used to bind all weft yarns (Wi, Wb) to the filling warp yarns (f1, f2) in at least one backing fabric (F, F2) and - all weft yarns of a weft yarn group (G1, G2) are inserted in a single opening (O1, O2) defined by the binding warp yarns.