If your deck is below 30 inches, a railing is not required. With that said, if you choose to build a deck, even if it is only 24 inches off the ground, that is still high enough that even an adult could injure themselves. When you take your kids and pets into account, the risk is even higher.
Aluminum railings are some of the most low-maintenance, durable, and nice railings on today’s market, and the best part is that you could install them yourself quite easily. Understanding aluminum handrail components is a crucial step for installation.