echemi logo
Product
  • Product
  • Supplier
  • Inquiry
    Home > Coatings News > Paints and Coatings Market > Common knowledge of coating: common problems in construction of waterproof coating

    Common knowledge of coating: common problems in construction of waterproof coating

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
    Search more information of high quality chemicals, good prices and reliable suppliers, visit www.echemi.com
    Core tip: the construction of building waterproof coating is to ensure that the structure of the building is not affected by water and the internal space is not damaged by water The construction of building waterproof coating plays an important role in the whole construction The construction of building waterproof coating involves the basement, wall ground, wall body, roof and many other parts of the building Its function is to prevent the leakage of rainwater, production and living water and the erosion of groundwater within the design durability period of the building or structure, ensure that the building structure and internal space are not polluted, and provide a comfortable and safe living space environment for people 。 So the common construction of building waterproof coating Paint knowledge how about Akzo Nobel Powder Coating Recommended introduction: powder coating is a kind of coating with different form from general coating, which is in powder form It is a new type of coating, because of its own advantages and more and more known by people Let's introduce Akzo Nobel Powder coating Akzo Nobel Powder coating is a cost-effective coating solution, which can be applied to different kinds of products After the treatment of static electricity and fire baking, a tough and durable coating surface will be formed, with the least impact on the environment Since the introduction of this technology, powder coating has been able to continue to maintain the Paint Home News: the construction of building waterproof coating is to ensure that the structure of the building is not affected by water, and the internal space is not damaged by water The construction of building waterproof coating plays an important role in the whole construction The construction of building waterproof coating involves the basement, wall ground, wall body, roof and many other parts of the building Its function is to prevent the leakage of rainwater, production and living water and the erosion of groundwater within the design durability period of the building or structure, ensure that the building structure and internal space are not polluted, and provide a comfortable and safe living space environment for people 。 So what are the common problems of building waterproof coating construction? 1、 The concrete phenomenon of poor adhesion with the base course: the coating fails to adhere to the base course or blisters or the adhesive force is not enough Prevention measures: 1 The base course must be cleaned up; 2 Check the strength of the base course, No sanding, peeling, loosening 3 No open water for water-soluble coating 4 Solvent based coating base must be dry 5 Primer must be used for the first coating 2 Specific phenomenon of uneven thickness: prevention measures for uneven thickness after coating film formation: 1 The base must be flat and free of holes 2 The coating must be applied in several times 3 The coating consistency shall be adjusted according to time and place 3、 Specific phenomenon of pimples: there are pimples in the coating After the coating construction, the coating contains small particles prevention and control measures: 1 Do not use the coating that has expired or has been used for too long after mixing; 2 Manual mixing or mechanical mixing of two-component materials is not in place, and pay attention to the inspection of the mixing materials; 3 Use the mixing bucket that is not dry, and pay attention to the cleaning of the mixing bucket 4 The proportion is not correct, and the proportion should be correct 4 Specific phenomenon of coating stratification: coating stratification occurs after coating construction and film forming, or there are blistering prevention and control measures between the coatings: 1 Cleaning is not in place before each construction in the process of film forming in several times 2 The waterproof film formed in the previous time is not completely dry 5 The drying speed is slow Specific reasons: because the one-component acrylic coating is formed by the evaporation of water into film, high humidity and low temperature environment, which hinders the evaporation of water in the coating, so the drying speed is relatively slow prevention and control measures: 1 Strengthen indoor ventilation conditions can be more conducive to the development of water 2 Thin coating and multilateral coating are more conducive to the volatilization of water During the construction, it is necessary to wait until each coating is dry before the next coating 3 Use cement-based coating for construction, or use other waterproof coating 6 After the completion of waterproof construction, the specific reasons for the cracking of the coating are as follows: 1 The base course is not cleaned and there is a large amount of floating soil 2 If the coating is too thick at one time, the uneven evaporation of water will lead to the cracking of the coating during the drying process of the coating 3 In outdoor construction, the external conditions are windy and other weather conditions, which may easily lead to the cracking prevention and control measures: 1 Before construction, remove the floating soil of the base course, treat the base course with the coating primer, and adopt the method of thin coating for many times 2 Avoid the construction in outdoor in windy weather 7、 Specific reasons for the phenomenon of tofu dregs in waterproof coating: too much water is added to the coating, resulting in the separation of the liquid and powder materials of the coating, and the powder materials sink, just like the prevention measures of tofu dregs: control the water addition, and strictly follow the product instructions for the proportion Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,
    This article is an English version of an article which is originally in the Chinese language on echemi.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to service@echemi.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

    Related Articles

    Contact Us

    The source of this page with content of products and services is from Internet, which doesn't represent ECHEMI's opinion. If you have any queries, please write to service@echemi.com. It will be replied within 5 days.

    Moreover, if you find any instances of plagiarism from the page, please send email to service@echemi.com with relevant evidence.