What caused the discoloration at the metal divider strips?
This question arises frequently with poured in place floors and is also a consideration with precast terrazzo base, treads or any item with accent strips. Metal divider strips in various gauges have been used extensively in terrazzo floors for many years. Initially the strips may tarnish or discolor temporarily. This temporary discoloration is beyond the control of the terrazzo contractor as it is created by the water and cement combination that is used in the installation of the terrazzo. Do not be alarmed; this condition has developed from the trapped moisture that remains in the system. The moisture used in the flooring system must dissipate during the curing period. Thus, with the sealer on the surface, the moisture moves laterally to the nearest divider strip to escape and that moisture can temporarily lead to discoloring.
