This was a job I did earlier in May this year where I was asked to clean this lovely Limestone patio installed at the rear of a house in Haddenham near Thame on the Oxfordshore borders which had succumbed to the ravages of the English winter weather and was far from looking its best.
As a Tile Doctor and carpet technician I have invested a lot in powerful high pressure machinery that can make light work of interior and exterior installations so taking on this patio was not a problem and it was nice to work outside for a change.
Power washing a Limestone Patio
On arrival I set-up the high pressure equipment and then proceeded to pressure wash the patio in order to get the worst of the dirt out of the tile. Then I soaked the tiles in a strong dilution of Tile Doctor Pro-Clean which was left to dwell for thirty minutes. The next process was to use a deck brush to scrub the cleaner into the stubborn areas and then rinse the patio with clean water which was then removed using a wet vacuum. After letting it dry I then had to re clean the worst areas again following the same process until I was satisfied with the condition of the tile.
Sealing a Limestone patio
The patio soon dried in the warm sun and later that day I was able to seal it using a couple of coats of Tile Doctor Colour Grow which is a colour enhancing impregnating sealer that can be used internally and externally, it works really on Limestone and did well to bring out the natural colours in the stone.
Source: Professional Tile, Stone and Grout Cleaning service in Oxfordshire