Put on a pair of safety glasses and cut a scrap piece of stair trim molding of the same type that you plan to install.
Trim work around stairs.
The scrap piece should be about 1 foot long.
Adding trim between the stairs and drywall hides any gaps and adds architectural value to a staircase.
Whether the stairs install between two walls or have one open side with handrails 3 4 inch.
Diy instructional video to make the perfect miter cut for your stair trim.
Cut the scrap piece at a simple 90 degree angle.