1. Construction technology of putty for exterior wall

1. Clean the porcelain surface thoroughly with clean water and detergent first, and apply batch coating after the wall is completely dry.

2. According to the water-cement ratio, first pour clear water into the mixing tank, add powder, and then use an electric mixer to stir into a uniform and particle-free paste. After standing for a few minutes, stir for a while, the effect is better.

3. Use point repair method to repair the base surface cracks and places with large differences in flatness. Make sure that the base surface is flat, without hollowing, and without oil stains. The thickness of each construction is controlled within 0. 5-2mm.

4. After the putty construction is completed, it should be polished as soon as possible. When grinding, it is enough to smooth the knife marks and remove the floating ash. It should be avoided after the putty layer has dried (24 hours under standard conditions) or after being exposed to rain. Construction at high temperature, grinding Finally, it needs to be watered and maintained, and it is advisable to enter the next process after four days.

5. The formula of this product is reasonable, and it is strictly forbidden to mix other brands of putty powder or cement, talcum powder, and glue wait.

6. The putty that has been stirred should be used up within four hours, adapting to the environment without rain at 5°C-38°C use below.

2. the external wall putty construction should be precautions:

1. The flexible and water-resistant putty for external walls is generally a paste or two-component product, which is a putty with certain flexibility and water resistance made of high molecular polymer emulsion, auxiliary agent box powder, etc. The flexible water-resistant putty on the exterior wall not only has the function of leveling the base, but also prevents the occurrence of fine cracks and cracks (excluding structural cracks) on the wall.

2. Before the construction of putty on the exterior wall, ensure that the base is solid, dry, smooth, clean, free of floating dust and oil. New walls generally need to be maintained for about 28 days. The putty must be even and free of lumps.

3. Before scraping the putty, a layer of elastic primer must be applied to the back cover to play the role of waterproof and breathable.

4. The flexible water-resistant putty on the outer wall generally needs to be scraped and coated 2-3 times. When scraping the next time, make sure that the previous putty is dry and does not affect the scraping. It is strictly forbidden to carry out construction when the putty coating film is not dry.

5. Because there is an elastic emulsion in the flexible water-resistant putty for external walls, there is a minimum film-forming temperature limit, so it should be applied under the conditions that the surface of the object to be coated and the ambient temperature are higher than 5°C and the relative humidity is lower than 85%.