What is the safest deck railing height for a second-storey deck in NB?

For a second-storey deck in New Brunswick, the minimum safe railing height is 42 inches (1070mm), which exceeds the standard residential requirement of 36 inches due to the increased fall risk from elevation.

The New Brunswick Building Code requires a minimum guard height of 36 inches (900mm) for residential decks 24 inches or higher above grade. However, for second-storey decks that are typically 8-12 feet above ground, many builders and homeowners choose to install 42-inch railings for enhanced safety, especially in homes with young children or elderly residents.

Key safety requirements for your second-storey deck railing:

The structural requirements become even more critical at this height. Your railing system must resist a horizontal load of 0.5 kN/m (about 35 pounds per linear foot) applied at the top rail. This means posts must be properly sized and spaced - typically 6 feet maximum spacing for wood railings, closer for some materials. The balusters (vertical spindles) must be spaced so that a 4-inch sphere cannot pass through anywhere in the railing system.

New Brunswick's climate adds extra considerations for second-storey deck railings. The increased exposure to wind, snow loading, and freeze-thaw cycles means your railing materials and connections must be robust. Aluminum and composite railing systems often perform better than wood at this height because they resist moisture penetration and don't expand/contract as much with temperature swings. If you choose wood railings, ensure all connections use stainless steel or galvanized fasteners rated for exterior use.

Installation is definitely professional territory for second-storey deck railings. The combination of working at height, structural load requirements, and building code compliance makes this a job for experienced deck builders. Improper installation could result in catastrophic failure. Most municipalities in New Brunswick will require a building permit and inspection for second-storey deck construction, including the railing system.

Consider upgrading to 42-inch railings even if 36-inch meets code - the extra 6 inches provides meaningful additional safety for relatively little extra cost, and many homeowners find the higher railing feels more secure when entertaining or relaxing on an elevated deck.

Need help finding a qualified deck builder for your second-storey project? New Brunswick Decks can match you with experienced contractors who understand both the safety requirements and building code compliance needed for elevated deck construction.