To preserve the high-gloss shine and structural integrity of these granite stairs:
Daily Cleaning: Use a soft microfiber cloth with warm water and a few drops of pH-neutral dish soap. Avoid acidic cleaners like vinegar or lemon juice, which can "etch" and dull the surface.
Prevent Scratches: Regularly sweep or vacuum (using a soft brush attachment) to remove grit and sand, which can act like sandpaper underfoot and scratch the polish.
Sealing: While very dense, it is generally recommended to apply a high-quality stone sealer every 1–2 years to maintain stain resistance and luster.
Safety Note: Polished granite can be very slippery when wet. Consider adding anti-slip treatments or discrete copper/metal inlays to the stair treads for better traction.