Place the securing washers along the edges of the board and down the centerline of each board. The securing washers along the centerline should be staggered in relation to the edge fastenings, creating a crisscross pattern on the board's surface.
It's also acceptable to position securing washers directly along the board's edges so that they can secure adjacent boards, reducing the number of fasteners required. If necessary, additional fasteners can be used to firmly secure the Larsen Thermal Construction Board to the floorboarding.
Each pack contains...