The environmental temperature factor is also an important factor affecting the quality of the external wall insulation system, so we must pay attention to this problem during winter construction, and how to carry out the external wall insulation construction in winter.
Be aware of temperature changes
Pay attention to the weather forecast at any time and keep abreast of temperature changes. If the weather cools down and rains and snows, construction should be stopped immediately. Moreover, it is necessary to ensure that the construction temperature is not less than 5°C, otherwise not only the curing time will change, but also the quality of the product will be damaged after the material is frozen, resulting in cracks and a decreased in water resistance, which seriously affects the quality of the entire external wall insulation system.
External wall insulation construction
During the construction phase, attention should be paid to:
1. The water-cement ratio and glue-cement ratio should be used within the specified range. Do not mix the material too thinly, otherwise, it will prolong the setting time.
2. The mesh cloth cannot be soaked in water to prevent the mesh cloth from being damaged by freezing.
3. When plastering the surface, try to choose noon time for construction to reduce the influence of temperature fluctuations.
4. Due to the lowering of the temperature, the foaming and curing time of the styrofoam is prolonged, so the time for grinding the seam of the board during construction should also be extended to avoid grinding the styrofoam before it is cured.
External wall insulation material
1. Storage of external wall insulation materials:
All liquid materials or pasty materials (such as imitation brick decorative mortar, plastering compound for two-component plastering mortar, real stone paint/acai stone, styrofoam, etc.) should be stored at a temperature not lower than 5°C and placed Put it indoors and covered with cotton felt to increase the storage temperature. All powder materials should be stored in a dry place.
2. It is strictly forbidden to add any auxiliary materials such as early strength agent and antifreeze to protective mortar, bonding mortar, and various supporting materials of the company. Anti-sizing agents and early-strength agents only work on cement hardening and have no effect on polymer film formation.
3. Since it is winter, many construction sites will be shut down soon, and dealers should also make a material plan to avoid excessive surplus materials. The storage environment of the construction site is very unfavorable for external wall insulation materials, resulting in unnecessary losses.
