There are three key trim pieces used to install Modin Rigid on stairs: risers, tread, and stair nosing. You'll also need sandpaper and a general construction adhesive to complete this installation.
Start at the bottom of your staircase with a riser. You may need to trim the height of the riser to match the height of your step. Sand the back of the riser and lay strips of glue on the back of the riser approximately 6-inches apart. Press the riser into place and use painters tape to hold the riser in place while you prepare for the next step.
Measure your stair tread to determine if it needs to be cut to fit your step. Once you have a piece that is the right size, sand the back of the tread, remove the painters tape from the previous step, and lay down glue approximately every 6-inches. Press the tread piece down.
On the next step, the riser will now sit on top of the tread piece so you may need to cut it shorter than you did for the first step.
Repeat these steps until you reach a landing or the top of your staircase.
You cannot use Rigid Stair Tread on your landings.
Instead, you'll install actual planks of flooring with the Rigid Stair Nosing at the edge.
Measure the distance needed to accommodate the nosing and draw a line. Remove the last plank, closest to the stairs, and lay down a strip of glue just inside of that line. Replace the plank, interlocking with the rest of the planks on the landing or level of your home. Only the piece closest to the stairs is glued down. This will prevent any gaps from forming between your planks and the stair nosing.
Sand the back of the stair nosing, lay down a strip of glue, and install the nosing. Tape it down while the glue dries.