Mix in a wheelbarrow, on a plastic sheet or on a pre-wet surface using clean, drinkable water wherever possible.
Empty contents of cement bag and mix thoroughly with sand and stone.
Gradually add water and mix to an even, pasty consistency. Use a maximum of 4,5 to 5 litres of water. Too much water will result in a weaker screed.
Do not try to rework by mixing in additional water when semi-dry.
After completing the surface finishing, the screed should be covered with plastic sheeting for at least 7 days.