Most decks use 16 on center spacing for joists.
Spacing between deck boards uk.
A convenient way to get consistent spacing is by using a 6 penny or 8 penny nail between each course of decking.
Decking subframe design guidance decking beam span guidance.
Many jurisdictions following the international building code which requires a minimum 1 8 inch spacing between boards.
In this instance the maximum span between deck post centres is 2 07m c16 or 2 24m c24.
Adjust spacing between deck boards.
The most common spacing measurement between deck boards is 1 8 inch.
Joist spacing for composite decking.
Joist and deck board spacing guidance.
Some builders reduce joist spacing to 12 on center to strengthen the deck frame or to increase maximum allowable joist spans.
If you have poor ventilation wider is always better.
Ensure there is a minimum gap of 5 6mm between each deck board.
Generally an acceptable gap between deck boards is between 1 8 inch and 1 4 inch.
The width of the nail is 1 8 inch.
Proper side to side deck board spacing allows for air water and debris to flow around the decking leading to a long lasting low maintenance deck.
The primary function is to drain water from the deck.
Larger gaps such as 1 4 allow more of this material to fall through the deck.
Position the fixing at least 20mm from the edge of the deck board.
We recommend beams are constructed from two 44 x 145mm q deck deck joists and are placed at maximum centres of 1 8m.
Gaps that are narrow 1 8 can catch debris specifically on top of the joists and can be difficult to clean out.
Spacing between deck boards provide a few critical functions.
Most decking is not strong enough to support longer spans than 16.
Joining two boards in a run.
Both sizes have their pros and cons.
For timbertech azek decking it s recommended to have a minimum 1 8 to 1 4 side to side gap between deck boards.
When joining two cut deck boards together in a run fix with screws 15mm from the end of each board at an angle to ensure secure fixing into the joists below.
Measure to the house at both ends and in the center when you get within about 5 ft.
Adjust the spacing between deck boards gradually over the next 10 rows of decking until the distance to the house is equal.
Spacing between deck boards.