Typically, the process of waterproofing involves three main steps: 1. cleaning, 2. crack filling, and 3. coating.
With two labors, it should take around 3-4 hours to clean the area. After that, crack filling and grouting would take approximately two hours, while 1 coating would require another two hours. In total, 1000 square feet of terrace can be four-coated in about 8 hours.
If two laborers are working, it may take around two days for one person to work 14-16 hours (8 hours per day) to complete the waterproofing project. However, if you have more laborers working, the project can be completed faster.