Concrete Line Marking in Humid Conditions

Working in humid conditions can be tricky when it comes to distribution centres or warehouses. Working in the spring and summer months is usually fine when you are working outdoors. It is when you get indoors that the trouble can sometimes occur. It comes down to the moisture of the concrete. Depending on the level of moisture in the air and how that is effecting the concrete it would be very difficult to try and line mark in such conditions.
The concrete has a level of moisture in it which is often referred to as “moisture content”. This refers to the water or water vapour that is present in the concrete. Ultimately these elements of the concrete are all related to the adhesion of the coating. How well the paint will stick to the concrete. If the levels of moisture are high then the concrete line marking will fail. The accepted level of moisture is 7% anything above will mean that the line marking would be unsuccessful.

Concrete Line Marking and Moisture Testing

The moisture in the concrete exists as either water or water vapour. This can be found in the capillary pores of the concrete. These provide a level of humidity that will be present in the concrete. The amount of moisture will always vary depending of the time of year and sometimes, depending on the time of day. The water moves with in the concrete in order to establish an equilibrium with the changing temperatures.
If there is extra moisture present when the coating or paint is applied then moisture will be trapped under the coating. Over time the moisture will move upwards in an attempt to escape. Because of the coating that you have applied, the moisture will cause the paint to split and crack. Therefore, causing the line marking to deteriorate faster.