Stair Nosings for Vinyl. The quantum slenderline range of stair nosing give the best solution for stairways fitted with vinyl or thin carpet. Some of the stair nosing profiles have ramped back edges these are available in straight front 90 degree and Rake back 83 degree nosing. The rear ramp on the nosing would allow top fitting. Please use the drop down boxes and click to select your options. To fit the coloured infill we would recomend the use of a heavy hand roller RWS134