Abstract: There is disclosed a gutter installation (50) secured at an edge (52) of a roof (54) of a building (56). The gutter installation includes a gutter (58) having a gutter channel (60) to receive water flowing from the roof (54). The gutter installation (50) further includes gutter mesh (62) to cover at least a portion of the gutter channel (60) and a gutter mesh fastener (64) operatively adapted to secure the gutter mesh (62) to the edge of the roof (54). The gutter mesh fastener (64) includes (i) a fastener body (66) operatively adapted to be secured to the roof (54) and (ii) a plurality of fastener teeth (68) outwardly extending from the fastener body (66). The fastener teeth (68) are operatively adapted to pass through mesh openings (70) of the gutter mesh (64) to secure the gutter mesh (62) to the roof (54).