Vulcaseal always recommend trying a test area first before cleaning a larger area. Once this has been done and the results are satisfactory, pour or spray Natural Stone Deep Cleaner over the area you are about to clean. Leave this to act for 2-3 minutes and then begin scrubbing with a hard bristle brush, in a circular hand motion.
Once scrubbed, leave this for approximately 5-10 minutes and then scrub the surface clean with water – hot if possible. A pressure washer is also a good method of rising off. You can then soak the water up with a sponge or equivalent. This process works well when cleaning areas between 5 and 10 square metres at a time.