What are tail joists primarily used for?

Tail joists are primarily used to support the ends of the floor joists. They serve as the outer supports that connect to the wall or foundation, helping to create a stable and level structure for the flooring system above. By providing this support, tail joists contribute to the overall integrity and durability of the floor framing. This function is crucial in ensuring that the weight of the flooring and any additional loads are properly distributed, preventing sagging or structural failures over time. Understanding the role of tail joists is fundamental for builders and contractors in providing a safe and effective building framework.