There is a chance that after a few weeks or months pass, a white haze may
appear on the surface of the pavers. This is known as efflorescence. It may
appear randomly or in certain areas, and will be more pronounced on dark
colored pavers. The white haze may give the impression that the color of the
brick pavers are fading. When wet, the white disappears and the color of the
pavers are enhanced. When they dry, the white haze reappears.
Efflorescence is completely natural, and will disappear with time.
There is no reason to be concerned that your pavers are damaged or defective. The concrete pavers are experiencing a natural process. It is a condition in all cement-based products, as well as in many other paving products. But the condition will usually correct itself with time and exposure to the elements. Here in Florida it only takes between 2-4 weeks after installation depending on the season. The reason it is season dependent will be explained in the next section.