How much does it cost to paint the walls of a 100-square-meter second-hand house?

It’s about 35 yuan per square meter of wall! For a 100-square-meter house, the cost is 3,500 yuan. And when painting the walls of a second-hand house, it is of course not possible to directly apply putty and paint latex paint. You must first mix the latex paint with clean water. The water ratio for roller coating is generally controlled to 20% to 30% based on the volume ratio.