As shown in the drawing I made a pattern out of taped-together 812-in. We had to mark every curve on that piece of paper. Take The Side Street Are Your Stairs Skirtless Stairs Skirting Stairs Trim Stair Moulding When one side of the staircase butts against a wall and the other side features an open railing a skirting board is typically used only on the side that butts the wall. Stair skirt board alternative . Decorating Your Interiors With Copper. If your stairs will be showing the treads or if there is an overhang I would suggest installing the skirt and then the treads. The lines otherwise would have been a 90 degree angle. In a recent remodel I had to put in a skirtboard the hard waywith the treads and risers already in place. Also good luck notching out the skirt to. Advantagefaster no cutting around nosing of treadalso if you but risers and treads to skirt between walls a little over fit tread opens a gap on the riser below and vise a versa but if skirt. Plac...