If you want epoxy or polyurethane to last, the substrate has to be right. That starts with concrete grinding Sydney to remove contaminants, open the surface, and create a profile that coatings can actually grab onto. Why Surface Prep Makes or Breaks a Floor Epoxy and polyurethane don’t fail because the product is “bad.” They fail because they can’t bond. Dust, curing compounds, paint overspray, oil, and laitance act like Teflon. Grinding removes these barriers and exposes sound concrete, so the coating keys are mechanically inserted instead of just “resting” on top. The Right Profile: CSP Matters Resin manufacturers specify a Concrete Surface Profile (CSP), usually in the 2–3 range for most epoxy primers and polyurethane systems. Grinding with the correct diamond sequence creates that micro-texture deep enough for adhesion and smooth enough for even film build. Skip this and you’ll see issues like peeling, fisheyes, or uneven gloss. Moisture & PH: Don’t Trap a Problem Moisture...