Step 4 · Install Stair Treads

Apply a generous bead of construction adhesive along the back and sides of the stair tread, ensuring it covers most of the surface that will contact the original tread. Also, apply adhesive along the front edge of the tread. Carefully place the cut stair tread onto the prepared step, aligning it properly with the front edge and side walls. Press down firmly to ensure good contact with the adhesive. To further secure the tread, drive wood screws through the tread and into the underlying stair structure. Pre-drill pilot holes to prevent the wood from splitting. Typically, two screws near the front and two near the back of each tread are sufficient. Ensure screws are countersunk slightly below the surface of the tread.