Cleaning Sandstone

We were asked to restore a large 70m2 riven Sandstone floor in the historic market town of Boston where the customer had been sealing with an impregnator sealer but the stone just kept absorbing the daily dirt despite repeated cleaning. The Sandstone was now very dull with ingrained dirt and mopping just seemed to make it worse. Unhappy with the appearance they decided to call us in to resolve the issues and add a resilient finish with a slight sheen.

Something clearly was not right so after discussing the issue on the phone I arranged to visit the property and survey their problematic stone floor. I concluded that the sealer the client was using was not effective at sealing the floor properly and had let dirt get into the stone. This could be because the floor had not been cleaned well enough prior to sealing, insufficient sealer had been applied or perhaps the sealer wasn’t suited to Sandstone. Either way to resolve the problem the solution would be to deep clean the Sandstone stripping off the old sealer in the process and then use something more suitable for Sandstone such as Tile Doctor Seal & Go which would also give the subtle shine appearance they were after.

I worked out a quote to renovate the floor, which was accepted and a date agreed to do the work which would take two days, one to deep clean the stone and the second to seal.

Deep Cleaning a Riven Sandstone Tiled Kitchen Floor

The first day started preparing the area which in this case was simply a case of removing the kickboards from under the kitchen units. Next, I created a strong cleaning, sealer stripper solution by combining Tile Doctor Pro-Clean with Remove and Go and then working in sections sprayed it on to the Sandstone and left it to soak in for ten minutes.

The solution was then scrubbed into the stone using a brush pad fitted to a rotary buffer machine with added weight to improve contact. Using a brush pad is an important factor when cleaning riven stone as a normal flat pad would struggle getting into the grooves of the stone and works well on the grout lines as well.

The scrubbing action generated a lot of slurry which was extracted using a high pressure Rotovac system which is a great time saver. The Rotovac works by applying hot water under high pressure onto the floor to further force out ingrained dirt and muck from the stone whilst simultaneously extracting the soil back to a tank on our van.

The results were amazing leaving the stone both clean and free of the old ineffectual sealer. After this the floor was inspected and stubborn stains were spot treated and the floor given a final rinse. Now satisfied the Sandstone was clean I left a couple of air movers in place to assist with drying overnight.

Sealing a Riven Sandstone Tiled Kitchen Floor

The following day the moisture levels in the floor were checked with a damp meter, its important the stone is dry before sealing otherwise the results can be patchy. Fortunately, the air movers had done an excellent job and I was able to start applying the sealer.

Seal and Go is a water-based sealer (so no smell as it dries) that works by protecting the stone with an impermeable layer. It takes multiple coats to fully protect the stone but does give the Sandstone a lovely appearance and will protect the floor from everyday wear and tear as well as making it easy to clean.

The customer was over the moon and said it was better than when they first had it installed and mentioned they would definitely recommend our services going forward.

 

Professional Sandstone Floor Renovation Service in Boston