In winter, as the temperature gradually decreases, cold air activities become more frequent. In this low-temperature and dry environment, the construction of imitation stone paint for exterior walls faces new challenges. In the winter in the north, the exterior wall imitation stone paint project is generally not suitable for the project. Many construction companies will choose to suspend construction and wait for spring temperatures to warm up before starting construction. However, due to schedule requirements, some works had to be carried out in winter. The key to overcoming construction difficulties in a cold environment and ensuring the finished product is to master construction skills. The following will detail the precautions for the construction of imitation stone paint on the exterior wall in winter.
Construction environment. 1.During winter construction, the outdoor temperature should be greater than 5, and the wind force should not exceed 5 sunny, dry and windless weather for construction.
2.During the construction process, it is necessary to pay attention to the weather forecast to avoid drastic fluctuations in temperature. Due to the characteristics of some products, the drying time is long, so special attention is required.
3.During the construction period, it is necessary to pay attention to the weather changes in time, especially 12h before the rain and 8h after the rain, and it is not recommended to carry out construction.
4.When the temperature is below 10, make sure the bottom layer is dry and spray colorful paint between 9-15 o'clock to ensure that the paint is fully dried to form a film before sunset.
5.For the sunny side, try to avoid afternoon construction.
Drying time. 1.The most suitable temperature for drying and film formation of the coating is 5-35, therefore, the autumn and winter construction should be avoided under the condition that the temperature is lower than 5 and the humidity is higher than 85%, so as to avoid the phenomenon of flowering, whitishing, rain marks, soft paint film or being washed away by rain.
2.The recoating time of the stone-like paint film should be moderately extended to 48h, or even longer, to avoid the quality problems of the paint film caused by the recoating time being too short.
3.The spraying density and regional temperature are different, and the drying time should generally be covered after 24-48h. When covering the surface, it is necessary to ensure that the temperature is above 5, and avoid brushing the oil before the color main paint is dry to prevent whitening.
Paint storage 1All on-site materials should be stored indoors in a cool and ventilated place, avoid direct exposure to the outdoors, and it is strictly forbidden to store below 5 to prevent frost and deterioration of materials.
2.In the process of transporting coatings in autumn and winter, if there is an area below 0, insulation measures need to be taken. In an environment below 0, the coating is prone to problems such as demulsification, non-filming, and poor water resistance.
Pay special attention. 1.Imitation stone paint products are divided into winter and summer formulas, taking 3A villa paint as an example, the products produced from April to September are summer formulas, and the rest of the months are winter formulas (subject to the label production date). In order to ensure the quality of construction, the construction must be carried out in strict accordance with the summer and winter formula.
2.Imitation stone paint is a thick-build coating, the slurry film is thicker, the drying process is longer, and the environmental temperature and weather changes should be paid attention to in time to avoid construction in bad weather, which will affect the quality of the paint film. If it cannot be completed at one time, the construction should be completed in the shortest possible time to avoid obvious color difference caused by temperature difference in the joint. In a low-temperature environment, if emergency construction is required, it should be sprayed as thin as possible many times to avoid being sprayed too thick at one time and affecting the film formation.
3.There may be color differences in different production batches of imitation stone paint, and the same batch of materials should be used for the same wall. A portion of each batch of paint should be set aside for later repairs.
If you want to know more about putty, please pay attention to Elcometer Good Putty***