From Stair Skirt Boards and Trim Refresher · Step 5 of 10 · Video by stairbuilding

Showing 2:14–2:33 of the source video.
After cutting the recesses for the nosings, slide the skirt board into place against the stairs. If all the measurements and cuts were accurate, it should fit snugly and correctly. If the fit isn't perfect, minor adjustments can be made through additional trimming or sanding until the skirt board sits flush.
Goal: Ensure the skirt board fits snugly around the stairs
This video demonstrates two methods for installing a skirt board on a stairway that features an overhang (nosing) on the steps. The first method involves marking and cutting the skirt board to precisely fit around each nosing. The second, easier method involves cutting a section of the stair tread's nosing to allow the skirt board to slide in directly, simplifying the skirt board cut.
Hold each cut skirt board in its intended position along the wall. Check for gaps, awkward angles, or areas where the board doesn't sit flush against the wall or stairs. Make any necessary adjustments by trimming small amounts from the edges or ends. This step is crucial for a professional finish and helps identify any measurement errors.
This project involves removing old stair skirt boards and trim, preparing the wall and stairs, and installing new skirt boards and trim for a refreshed look. It includes measuring, cutting, fitting, fastening, and finishing the new trim pieces.
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