What are the causes of concrete discoloration?
Concrete discoloration happens for a variety of reasons. Temporarily covering concrete with poly sheeting can cause the hardened concrete to be darker in appearance. Another cause of dark, mottled concrete can be due to uneven application of curing products. Curing, or Sealing products should be applied in a uniformed fashion with a nozzle that will produce a fine mist. There can also be differences in coloration between slabs placed on different days. This is usually due to variations in temperature and weather conditions from day to day. Discoloration can be greatly reduced by following recommended placing, finishing and curing practices. Consult your concrete contractor.
