Baluster Spacing Code
The 4 rule many building codes specify that a 4 ball must not be able to pass between balusters.
Baluster spacing code. Your railing can t be less than 3 feet 90 cm from the surface of the deck. It is recommended to replaced the railing with vertical balusters that are no more than 4 inches apart to reduce the risk of small children falling. This relatively tight amount of spacing still allows for visibility between spindles but also stands as a safety measure to prevent small children from becoming stuck between spindles or from slipping through the balusters.
Most city inspectors carry a 4 inch ball with them. Baluster spacing is important for building code and visual reasons. We explain below how to space balusters for best results and show 4 baluster spacing examples.
Building codes mandate that balusters have no more than a 4 inch gap between them. And no matter where you are in north america the rule of 4 or 10cm in canada remains consistent for baluster spacing. Balusters the vertical guards that support the handrail must be installed close enough that the space between them is no greater than 4 inches.