Wash the area with a concrete degreaser and rinse thoroughly with clean water. Let it dry completely. Step 2: Apply the Bonding Adhesive
: Avoid using the basic Simple or Extrude parameters if you are building flush residential steps. Switch to Make Stair - Slab or Make Stair - ZigZag . These profiles generate a uniform concrete or timber-carved underside that anchors cleanly into floor framing. s4u stair crack top
If "S4U" refers to a specific product, it might be beneficial to: Wash the area with a concrete degreaser and
If you can share a screenshot or describe the gap (e.g., "There is a gap between the top step and the second floor"), I can give you a more precise step-by-step fix. s4u stair crack top