You may be surprised but we just clean interior stone and tile we also specialise in exterior stone cleaning as well as you will see with the post below where we cleaned and re-pointed a neglected patio at a house in Rushden.
The first photo shows the condition of the patio which hadn’t been professionally cleaned for over forty years, weeds and moss had eaten through all the original mortar and made any remaining cement very lose and would need to be replaced after pressure washing.
The second picture shows the equipment set up ready to pressure wash the patio, the power of the pressure washer blasted away most of the dirt and we used Tile Doctor Remove and Go on any stubborn stains that became evident.
Source: Patio Cleaning in Northamptonshire