Step 5 · Install Treads
Position the first tread board on the lowest step notch of the stringers. Ensure it is flush with the front of the stringer (or has your desired overhang) and is level. Secure the tread to each stringer using exterior-grade screws. Work your way up, installing each subsequent tread. If installing risers, attach them to the back of the tread above and the front of the tread below, ensuring a snug fit.