Install Pre-Cut Corner Trim Pieces

What happens here

The worker then bends down to pick up several pre-cut, L-shaped pieces of composite trim. These specialized pieces are designed to fit precisely over the corner where a stair tread meets its corresponding riser, wrapping around both surfaces. The worker holds up one piece to demonstrate its shape and then carefully places it onto a stair, aligning it flush with the existing tread and riser. This creates a clean, continuous edge, often referred to as a "waterfall" or fully wrapped stair edge. The video shows this piece being placed without visible fasteners, implying it will be secured in a later step (e.g., with hidden fasteners, adhesive, or face screws).

Goal: Create finished, seamless stair edges with pre-cut composite trim.