How Many Feather Edge Boards Per Metre Or Foot

To calculate how many 125mm feather edge boards you need per metre, taking into account a 25mm overlap, you first determine the effective coverage of each board. If each board is 125mm wide but overlaps by 25mm, the effective width per board is 100mm (125mm - 25mm). Therefore, to cover one metre you would need 10 boards (1000mm / 100mm = 10 boards).

To determine the number of feather edge boards required per foot when using 5-inch boards with a 1-inch overlap, you need to account for the effective coverage of each board. The 5-inch board, once overlapped by 1 inch, provides a net coverage of 4 inches (5 inches - 1 inch). Since there are 12 inches in a foot, you would divide 12 inches by the net coverage provided by each board (4 inches). This results in a requirement of 3 boards per foot (12 inches / 4 inches = 3 boards).