On Thu, 18 Nov 2004 21:22:45 +0000, "Ed Sirett"
wrote:

Hi all,

Does anyone know if there is an off-the-shelf product for treating/coating
some rather smooth and slippery flag stones

Had a problem with an old stone doorstep, well two steps, that got
very slippery when wet. We mixed sand with clear non-gloss
(polyurethane?) varnish and simply painted it on. Worked a treat.