Stair layout template and method for using the template

A stair layout template, comprising:

• a first side comprising:
• a first scale along at least a portion of a first edge for marking cutting lines along tops of right stringers of a set of stairs to be constructed, the first scale comprising a plurality of index lines perpendicular to the first edge and corresponding to a plurality of possible rises-per-tread of the set of stairs;
• a second scale along at least a portion of a second edge, the second edge being parallel to the first edge, the second scale being a copy of the first scale, for marking the cutting lines along bottoms of the right stringers, the second scale having the plurality of index lines perpendicular to the second edge;
• first and second indicators for marking a first set of tread screw set points along the right stringer, the first indicator being adjacent the first edge and the second indicator being adjacent a second edge, parallel to the first edge;
• and
• a second side, being a mirror of the first side, comprising:
• a the third scale along at least a portion of the first edge, the third scale being a copy of the first scale, for marking cutting lines along the tops of left stringers of the set of stairs, the third scale having the plurality of index lines perpendicular to the first edge;
• a fourth scale along at least a portion of the second edge, the fourth scale being a copy of the first scale, for marking the cutting lines along bottoms of the left stringers, the second scale having the plurality of index lines perpendicular to the second edge;
• and
• third and fourth indicators for marking a second set of tread screw set points along the left stringer, the third indicator being adjacent the first edge and the fourth indicator being adjacent a second edge;
• the first and second sets of tread screw set points indicative of locations on the right and left stringers where holes screws will attach tread modules between the right and left stringers.