How to build a set of stair stringers. Stair stringers are the structural backbone of a staircase. They’re the angled boards that support the treads (steps) and risers, transferring weight safely down to the floor. In this video, I’m showing how to measure, mark, and cut stair stringers accurately so your stairs are strong, level, and code-ready. #remodel #construction #contractor #diy #carpenter | Cody Romer