How to Secure Stringers at the Top of Stairs

Stringers are stair supports that typically attach to the side of the staircase to strengthen the overall construction so the stairs won't collapse. The stringers connect stair structures to each other so weight on the stairs distributes more evenly instead of one stair section having to bear all the weight at one time. Staircase construction should always be done carefully to ensure a long lasting job and to prevent accidents. Calculating the size and length of the stringers is the more challenging process but the actual securing of the stringer to the staircase just requires a few basic tools.

Things You'll Need

• Aluminum or steel 90-degree angle brackets
• Hammer
• Drill
• Nails
• 14-by-1 inch stainless pan head screws

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Instructions

1. • 1

     Hammer a 90-degree angle bracket underneath the side of each tread at the top of the stairs on both sides. The angle brackets should be aluminum or galvanized steel for best results.

   • 2

     Line up the stringer with the angle brackets and then screw the brackets into the side of the stringer using a drill once it is in proper position.

   • 3

     Screw four to six 14-by-1 inch stainless pan head screws into the underside of the stringer at the top of the stair so it attaches to the underside of the stair landing. Leave a 1/4-inch gap between the landing and the stringer for temperature expansion. This also assists drainage if the stairs are outdoors.