Quora User, Curious by nature;RDH. Honestly, it depends on where you live and what type of cleaning you need. This is the internet, it will be different in India than the US. Even in the USA the suburbs will usually be a little less than the city - the costs of running a business, education, skill... Are all taken into consideration.
Depending on the type of concrete used and the size of the sidewalk it will take anywhere from 24-72 hours before it can be walked on. The edges of driveways that will bear more weight may need longer. Check with the instructions provided by the manufacturer for specific dry and cure times.epending on the type of concrete used and the size of the sidewalk it will take anywhere from 24-72 hours before it can be walked on. The edges of driveways that will bear more weight may need longer. Check with the instructions provided by the manufacturer for specific dry and cure times.
You will literally see the dirt and grime lift off the concrete. After you have scrubbed it good, hook up the water hose to your brush, turn on the water, and scrub some more while rinsing the sidewalk off. Step five. Depending on how dirty your sidewalk is, you may have to repeat the cleaning process twice. I did. After the second cleaning, I still had some little black spots lingering just near the porch steps. Since this sidewalk hadnât been cleaned in the history of ever, they werenât budging very easily.