How much cement render will you need to render 25sqm?

To determine how much cement render you need for 25 square meters, you'll generally require about 1.5 to 2 bags of cement render per square meter, depending on the thickness of the application and the texture desired. Thus, for 25 square meters, you would need approximately 37.5 to 50 bags of cement render, assuming each bag covers around 0.5 square meters at a thickness of about 10mm. It's important to check the specifications of the specific product you are using for more accurate calculations.