Re: Deck Board Gapping In the 80's and early 90's before the dawn of the composite age, lumber yards all over the nation told people to install the treated or cedar deck boards tight, under the reason, of women walking with heels on decks will fall in the cracks and get hurt.
Leave gaps between deck boards to achieve drainage. But most decks need and can achieve spacing between the deck boards for drainage. As discussed in Best Practices Guide to Residential Construction: Here is a deck poorly installed with no deck spacing, and no ventilation. I'm sure the deck joists and structure have suffered from this
If your wooden decking is slippery, blackened, faded, dirty, warped or marred by unsightly gaps, all is not lost. Read on for expert advice about getting timber decking back into tip top condition for a long, hot, lazy summer of alfresco fun.
Green lumber with a moisture content of more than 19% can be installed with nearly no gaps in arid environments, and in a few short months, will shrink to a desired size gap. Overall, conventional decking profiles should be installed such that when seasoned, will have gaps between 1/8 and 1/4 of an inch.
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