When cleaning brick or stone work the procedure of cleaning is to use a high pressure cleaner.
The high pressure cleaner uses high pressure but with a low volume of water. This system is more eco friendly and does not waste valuable water.
This cleaning system requires no chemicals.
The correct procedure for re-pointing of brickwork is to first grind out with diamond tips.
Then clean out all existing loose dust and particles from and around the brickwork.
Then re-point by the means of a re-pointing gun, which gives the correct amount of mortar required back in to the area round the bricks.
After the procedure of injecting mortar between the bricks, at a consistant rate
Leave the mortar to settle for a short time and then the process of barring off to ensure the mortar has been correctly forced between the bricks to get the smooth finish required.