A sealer for internal use had been applied to this external black limestone patio in Crowborough and as you can see from the photograph below it had become badly affected by weather and was basically looking a real mess.
Cleaning a Limestone Patio
Working outside does have advantages in that there is a lot less preparation to do to protect other surfaces so it wasn’t long before we got to work with the application of a strong dilution of Tile Doctor Pro-Clean which is a multi-purpose cleaner and stripper. The Pro-Clean was left to soak into the Limestone for a while so it could get to work on the remaining sealer and make it easy to remove; the next step was to use a high pressure washer fitted with a spinner attachment so not to upset the grout between the tiles. This action removed the dirt and old sealer and just needed a final rinse to wash off any remaining cleaning product before sealing.
Sealing a Limestone Patio
The patio was left to dry off overnight and fortunately due this year’s warm summer we were able to return the next day to seal the Limestone with two coats of Tile Doctor Colour Grow which unlike the previous sealer can be used on external applications, it will also protect the patio going forward making it easier to clean as well as bringing out the natural colours in the stone.
I think you will agree the patio has been transformed.
Source: Limestone Patio Cleaning in East Sussex