Azek PVC Adhesive Squeeze Bottle Fiberon Decking posts at the tops should

posts at the tops should match the height of regular level posts unless set back significantly from the step edge

Just add privacy-panel posts to have a full system for decking or tongue-and-groove infill

Bucket of 4" contains 600 screws

or stainless steel Concealoc hidden fasteners

Azek PVC Adhesive Squeeze Bottle Fiberon Decking posts at the tops shouldEasy dispense, no mix adhesive for Azek PVC boards and trim pieces. For the strongest bond, apply to cut surfaces (open cells) of trim or decking. Can be used with Azek biscuits if desired. Dries clear white, use care if using on materials that are not white or won't be painted.