The Step Profile

There are four basic step profiles that a stair nosing will follow.The square stair nosing profile is fitted to steps that are at 90 degree angle to the tread.The rake back stair nosing profile is fitted to steps whose riser is slopping backwards at 83 degrees  angle to the tread.This type of step profile is normally found in new build projects.Bullnose stair nosing is fitted to steps that have a rounded edge,a wide majority which are found in wooden staircases.The chevron stair nosing profile  is often used to accomodate all steps profiles,particularly those whose edge has been chipped or worn out.