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The quality supervision department has taken action, and the public wall requires the use of water-resistant putty

The quality supervision department has taken action, and the public wall requires the use of water-resistant putty

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  • Time of issue:2020-12-29
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(Summary description)Shandong Weihai Quality Supervision Station requires that from October 1, 2016, the stairwells and corridors of new residential construction projects need to be scraped on the walls of public parts on the ground

The quality supervision department has taken action, and the public wall requires the use of water-resistant putty

(Summary description)Shandong Weihai Quality Supervision Station requires that from October 1, 2016, the stairwells and corridors of new residential construction projects need to be scraped on the walls of public parts on the ground

  • Categories:Company News
  • Author:
  • Origin:
  • Time of issue:2020-12-29
  • Views:0
Information

       Shandong Weihai Quality Supervision Station requires that from October 1, 2016, the stairwells and corridors of new residential construction projects need to be scraped on the walls of public parts on the ground, as well as the stairwells and elevators of new public construction projects. For putty walls, the design unit should clearly use water-resistant putty in the construction drawings; for new public buildings, underground garages, basements and other residential construction projects that need to be putty off and damp-prone public parts walls, the design unit should include the construction drawings Clearly use water-resistant putty or exterior wall putty. (From Weihai Evening News)

       The purpose is clear: to prevent the wall from falling off and damage the indoor public parts of the building, and to ensure the durability and visual quality of the wall.

       This time, the Quality Supervision Bureau requested the implementation of the "Water-resistant Putty on Walls" policy to be implemented on the National Day this year, and analyze the reasons for it.

1. Compared with ordinary putty, water-resistant putty mainly has the following characteristics

1. Water resistance, moisture resistance and mildew resistance

       Ordinary putty is afraid of water, it dissolves when it meets water, and its water resistance is extremely poor. If the environment in the east and southeast coastal areas is high in humidity and rain, especially in areas with frequent typhoons, ordinary putty is used. After the putty layer absorbs external moisture and humidity, it is easy to loose and chalk, providing conditions for mold growth to grow wildly, and the wall is very easy Moldy, even peeling. The water-resistant putty is highly hydrophobic, blocking moisture and moisture, and the firm putty layer is water-resistant, moisture-resistant, and mildew-resistant, ensuring the coating quality and service life of the wall.

       After the last typhoon "Nibert", a resident of Bandong, Fujian, whose home was destroyed and soaked in a century-old house. When the flood rushed through, the first floor was basically immersed in water, and the corner of the small building adjacent to the outer street had collapsed, and the central lobby was slightly damaged. The walls made in different periods had different endings-some of the room walls were used in the early stage It is ordinary putty, and the wall is severely chalked and peeled off, and part of the wall in the later painting is made of Dajiang environmental putty. The wall is strong, flat and intact, and there is no mildew. Just use cloth. It can be scrubbed to remove the marks caused by the flood on the wall. The resident repeatedly praised the water resistance of Dajiang Waterproof Putty.

2. Good durability, no need to eradicate the second decoration

       Ordinary putty has poor water resistance, so it must be removed and cleaned together with the original paint when re-decorating in the future, and then the putty will be scraped again. Not only does it increase decoration costs (material costs, labor costs), but the removed waste also causes a waste of resources, which is difficult to recycle and pollute the environment. Water-resistant putty is done once and for all. When two, three or more decorations are carried out after several years, the putty layer does not need to be shoveled, the surface layer is polished, and the next process can be carried out after partial repair, which saves time and effort and protects the wall. body.

3. Save paint consumption

       Traditional putty has strong water absorption. When the first time latex paint is brushed, the coating film is not fully leveled, and the water in the paint is absorbed by the bottom putty. Therefore, the latex paint is applied on the surface of the traditional putty because it absorbs water quickly , Poor leveling. As a result, the coating film after painting the finished product is not smooth and delicate enough, and latex paint is also used. The unique whiteness and density of water-resistant putty make it possible to save 25-30% of the amount of paint per unit area paint compared to walls using ordinary putty.

4. High bonding strength

       The JG/T298-2010 "Putty for Building Interior" standard clearly stipulates the strength of the putty. The standard state bond strength of ordinary putty is greater than 0.25MPa, and there is no requirement for the strength after immersion, while the water-resistant putty requires the standard state bond strength Reach 0.50MPa, and the bond strength after immersion in water is greater than 0.30MPa. It can be seen from the standard that the strength of water-resistant putty is higher than that of ordinary interior wall putty, so the use of water-resistant putty is not easy to produce hollowing and falling off.

5. Low overall cost

       Use water-resistant putty, no need to add any ingredients during construction, just add water, and there is no need to spend extra money to buy white latex, glue and other ingredients. The wall decoration effect and service life after making water-resistant putty are far beyond the reach of ordinary putty. And from the comprehensive calculation of the amount of paint and the cost and construction cost of the putty during the second decoration, the cost of using water-resistant putty is lower than that of ordinary putty.

2. Comparison of environmental protection between water-resistant putty and traditional putty

       Traditional putty not only has extremely poor water resistance (it melts immediately in water), and the glue used to reconcile putty contains free "formaldehyde". "Formaldehyde" is a recognized carcinogen, and its volatilization cycle is several years. The wall area of ​​home decoration accounts for about 70% of the space of the whole house. If the wall is filled with 2-3 times of traditional putty, a lot of glue is needed. The consumption per household ranges from more than ten barrels to more than ten barrels. After the construction is completed, a certain amount of free "formaldehyde" will be permeated in the residential air, and long-term life in it will inevitably bring health hazards.

       The interior wall water-resistant putty uses the world-class core raw material-imported redispersible latex powder, adopts internationally advanced German environmentally friendly non-toxic formula, meets international environmental protection standards, and does not contain any free formaldehyde, benzene, harmful heavy metals and harmful volatile organic compounds. Moreover, it can be constructed by adding water, saving labor and time. The walls painted with water-resistant putty are environmentally friendly and healthy, which guarantees 70% of the healthy space for home environmental protection.

       In places like Shandong, Jiangsu, Zhejiang, Shanghai, Guangdong and other eastern and southeastern coastal areas, especially the typhoon-prone areas, there is plenty of rain, and the overall humidity is high throughout the year. In the wet season, the walls are prone to mold. Moldy walls not only affect the appearance, but also troublesome to deal with stubborn diseases such as cracking and falling off, and bring many inconveniences to life and living environment. Public building walls have begun to use water-resistant putty, which also illustrates the importance of water-resistant putty to ensure the quality of wall coating.

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Time of issue:2020-12-29 13:52:21

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