A 42 left return tread is 42 long overall and has a 40 3 4 throat 42 tread 1 1 4 return return this is a 1 1 4 solid stave that is bullnosed on one side and glued to fit along the open end of the stair tread.
Stair tread return length.
Single return treads are measured by the overall length.
Double return stair tread.
There are three main components in a standard staircase.
Simply choose a length of return that matches the thickness and type of wood as the tread rout shape as desired cut to length and attach to the tread using a biscuit and glue join or a finish nailer.
The stringer is the backbone of the structure.
Returns can also be added to existing treads as molding.
Double return stair treads have a mitered return on both the left and right ends.
Stringers are the diagonally placed boards anchored at the top the header and the bottom the footer of the staircase.