Step 8: Attach the Decking

Starting from one side of the deck, attach the first 2"x6" surface board so it's flush to the edge of the deck. The surface board will overhang the first support board closest to the house. Leave a 1/8" to 1/4" gap between the end of the surface board and the edge of the house. Next, secure the connection of each support board with two 2 1/2" deck screws. If the surface boards are pressure treated and wet, position the boards with their edges touching. Within a few days, a small gap will form as the boards dry and shrink. If the surface boards are cedar, redwood, or composite decking, leave a 1/8" gap between the surface boards.