How thick are stair risers?

1/2″Click to see full answer. Hereof, how thick do stair treads need to be?As you may have noted from the sketches and text above, typically building codes for stairs specify minimum stair tread thickness (1″ if supported by a riser at front, or 1 1/2″ thick treads if the stairs are open-construction without risers), but they do not specify a maximum allowable tread thickness.One may also ask, what is the maximum rise of a step? The maximum riser height shall be 7 3/4 inches (196 mm). The riser shall be measured vertically between leading edges of the adjacent treads. The greatest riser height within any flight of stairs shall not exceed the smallest by more than 3/8 inch (9.5 mm). In respect to this, what wood is used for stair risers? Poplar is a good choice to be painted but its almost as soft as pine so it will dent. Not many people kick their toes into the risers as far as I know. Poplar is probably fine. Even pine should be OK.Should stair treads or risers be installed first?Do work at least one riser ahead before installing treads. Installing two risers is one way to ensure proper strength and performance. The important thing is to remember to install riser, tread, riser, tread or install the risers first. Do use both adhesives and fasteners when possible.