Recently, in the autumn, with the rain, the air pressure is generally low, and the humidity in the air becomes large. Many companies say that it is best not to carry out the construction of epoxy floor paint on rainy days. Why?

We often say that humidity refers to the amount of moisture in the air, usually expressed as a percentage. If condensation occurs, the relative humidity of the air reaches 100%. When the relative humidity of the air is higher than 85%, the curing of the coating is easily affected, and the water mist is liable to cause whitening on the surface of the epoxy floor, thereby affecting the use effect.

At this time, it is easy to leave a lot of harmful substances in the construction. These substances are not volatile and easily cause deformation of the floor. Therefore, in the case that we feel that the surface moisture content is not large, in fact, the construction conditions are often not reached. The blind construction of the epoxy resin floor will cause subsequent delamination of the ground, bubbles, and easy whitening. Cracks and other diseases. (except for moisture-curing polyurethane coatings).

Humidity not only affects the construction of epoxy floor paint, but also affects the curing of floor paint. Its influence is often greater than people think. If the humidity is too high, it will cause condensation on the surface of the coating. The condensed water will cause damage to the curing agent, causing whitening, loss of light, stickiness and stickiness of the coating film, which greatly reduces the surface decoration effect and causes rework when it is serious.

Especially for solvent-free topcoats, the drying time is generally long. It is dangerous to spray immediately after painting or to paint in the evening in winter and spring. But sometimes because the owner asks for the construction period, if the construction period is more urgent and the ideal weather conditions are not easy to occur, then the ground must be dry before construction. At this time, measures must be taken to improve the coating environment. If the air conditioner is warmed and dehumidified, and the surrounding protective measures are taken, the industrial dehumidifier needs to be prepared for the bottom layer construction, and the partitioning treatment can be used for the wet and dry soil.