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    Home > Coatings News > Paints and Coatings Market > Coating knowledge: seven common problems in waterproof coating construction

    Coating knowledge: seven common problems in waterproof coating construction

    • Last Update: 2020-04-03
    • Source: Internet
    • Author: User
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    Core tip: the house has just been waterproof, blistering, color difference, cracking, how to deal with it? Today I will tell you the reasons and solutions: 1

    The concrete phenomenon of poor adhesion with the base: the coating and the base are not glued, or the blistering or adhesion is not enough prevention and control measures: 1

    The base must be cleaned; 2

    Check the strength of the base, No sanding, peeling, loosening 3

    No open water in 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 without holes 2

    It must be divided during painting Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint

    In fact, there is no ugly color in the wall paint, only the disharmonious color matching

    The use of wall color contains the knowledge of health

    Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health

    Grasp the basic principles of wall color and paint a colorful space

    1、 Wall paint color selection notice 1

    Light color is generally used for the top surface

    Light colors make people feel light, dark colors make people feel heavy

    Usually, the treatment of rooms is from top to bottom, from shallow to deep

    For example, the ceiling and walls of rooms are white and Paint Home News: the house has just been waterproof, blistering, color difference, cracking, how to deal with it? Today I'll tell you the reasons and solutions: 1

    The concrete phenomenon of poor adhesion with the base: the coating and the base are not glued or blistering or the adhesion is not enough prevention and control measures: 1

    The base must be cleaned 2

    Check the strength of the base, 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 Seven, the waterproof coating official account for the phenomenon of bean curd residue: the excessive amount of water added to the coating causes the separation of liquid and powder from the coating, and the powder sinks as if the bean curd residue is to be prevented and treated: control the water consumption and strictly match the product instructions

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