To clean your concrete wall firstly blow all the loose dirt and debris off your concrete surface.
You then pretreat the concrete surface with mixture of algaecide and degreaser. Use a gardening watering can and give the surface a good even coat as this will breakdown the algae and mould on the concrete surface, use a broom and broom the mixture onto the wall.
Use your pressure cleaning wand to clean the edges of the wall, if you don’t have a little surface cleaner clean the whole wall with your pressure cleaner wand. You can use a turbo tip that makes the pressure washer clean the concrete quicker. Take your time and make sure you clean the whole surface.
When you are finished blasting away the algae and dirt use your pressure cleaner to clean down the surface and other surfaces that mud would have splashed up on.
Now this is one of the most important part post treatment of the concrete. Reapply the mixture of algaecide to the clean surface of concrete and leave on there.
In 5 days time you will have the most clean and brightest concrete in the neighbourhood.
The same process works well for concrete pathways and driveways
Or you could call 0402741670 at Pristine Washing and get a Professional to do it for you at a great price.
www.pristinewashing.com.au