It's important to know what board sizes you'll need to purchase for your deck. Here is a table of board sizes, to help determine the different lumber sizes available.
Decking. Updated on, 17 Sep 2018. Pressure Treated Deck board --Green. 144mm(W) X 32mm(Thickness). lengths (in meters), Price (ex. VAT), Price (inc.
All lumberyards and home centers carry 16-ft. deck boards, but many also stock or can order 20- and 24-ft. boards, though they may cost more. Full-length.
Purchase boards in lengths that fit the deck with minimal cutting. Cut edges absorb more water, and nails driven near the edge often split the wood.
The size of the deck can have a large influence on its overall cost. The average size of a deck is about 12x20 feet, but larger decks are.