Butting the deck boards up against each other as tight as possible is the correct method. (acmetools.com) The joint between the boards is not watertight. When the deck boards shrink, the gap remains small. The only thing that affects water sitting on a deck is the crown of the board. (renovation-headquarters.com)
Butting the deck boards up against each other as tight as possible is the [correct method.](https://www.acmetools.com/shop/tools/cepco-bw2?cm_mmc=Bing-_-PRODUCTFEED-_-CEPCO-_-BW2&msclkid=6545473955a91867c844277233f85761&utm_source=bing&utm_medium=cpc&utm_campaign=Shopping-National-Search%20Only-All%20Products&utm_term=4579053613270773&utm_content=GS_cepco) The joint between the boards is not watertight. When the deck boards shrink, the gap remains small. The only thing that affects water sitting on a deck is the [crown of the board.](http://www.renovation-headquarters.com/board-crown.html)
(post is archived)