beams, posts, decking, and stair stringers must be decay-resistant, meaning either preservative-treated in accordance with the AWPA U1 standard, or a naturally durable species of wood. In Chapter 2, the 2024 IRC defines “naturally durable” species...
Skirting board is an architectural element used to enhance the appearance of a staircase. Also known as stair stringers, skirt boards are installed along one or both sides of a stairwell, depending on the design. When one side of the staircase butts against a wall and the other side features...