Structural stringer for stairways

A kit for producing a stringer assembly for use in stairways, comprising:

• a first stringer member in the form of an elongated single piece panel having one lateral flat surface for being positioned on a lateral side of a previously assembled stairway along the length thereof and an opposite lateral flat surface, the first stringer member being adapted to be secured to at least one step of the stairway with at least one first fastener adapted to be driven through the first stringer member from the opposite lateral flat surface thereof and then into the step;
• and
• a second stringer member in the form of an elongated single piece panel having one lateral flat surface thereof for being positioned on the opposite lateral flat surface of the first stringer member along the length and the width thereof such as to conceal the first fastener, the second stringer member being adapted to be mounted to the first stringer member, the second stringer member including a support section extending beneath the one lateral flat surface thereof and defining a flat support edge that is perpendicular to the one lateral flat surface, the first stringer member defining a bottom flat edge adapted to be directly mounted on the support edge along the length thereof, the support section having a thickness at least equal to the thickness of the first stringer member,
• wherein the first and second stringer when assembled together form a stringer.

A method for assembling a stringer to steps of a stairway comprising:

• (a) providing first and second stringer members, the first stringer being in the form of an elongated single piece panel having one lateral flat surface and an opposite lateral flat surface, the second stringer member being in the form of an elongated single piece panel having one lateral flat surface thereof, the second stringer member including a support section extending beneath the one lateral flat surface thereof and defining a flat support edge that is perpendicular to the one lateral flat surface, the first stringer member defining a bottom flat edge adapted to be directly mounted on the support edge along the length thereof, the support section having a thickness at least equal to the thickness of the first stringer member;
• (b) mounting the one lateral flat surface of the first stringer member to the steps with first fasteners, the first fasteners being driven through the first stringer member and then into the steps;
• (c) positioning the one lateral flat surface of the second stringer member to the one lateral flat surface of the first stringer member such as to conceal the first fasteners;
• and
• (d) mounting the second stringer member to the first stringer member with second fasteners, the second fasteners being driven through the first stringer member and then into the second stringer member.