It is important to remember that we are dealing with concrete, which contains different kinds of sand and gravel as well as water, cement and possibly a plasticizer. Every truckload of concrete can vary in its proportions of water and raw materials.

This will have an impact on the final product of the floor. It’s hard to control this to 100%,but below you will find some points to take into consideration that will give you a better chance of a good result. 

1. Make sure that the concrete is of good quality. Less water in the concrete will reduce the lime precipitation and the colour differences.
2. Try to apply Herkulit Top as late as possible, even if it seems dry. Herkulit Top will still absorb moisture from the concrete base.
3. In case plastic film and water is used, make sure that the plastic film isn’t removed during the first 7-14 days and that it covers the whole floor during this period.
4. Avoid walking with dirty shoes on freshly laid Herkulit, especially if lighter colours have been used (yellow, light grey and beige).
5. Avoid low quality pans and blades. These can give off steel which darkens the surface. It is preferable to use Allen composite pans, see “Allen Compodisk®” chapter for more information.
6. Hand tools, pans and blades should be clean and free from dirt and residues!
7. When using petrol driven machines, make sure that you don’t fill the petrol tank on the newly made floor.
8. Avoid trowelling too hard with pan and blades while using lighter colours, this work will have a big effect on the end result!

Please observe that possible colour differences have no effect on the quality. It is only a cosmetic difference and the material will not be less good or less strong!