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    Home > Coatings News > Paints and Coatings Market > To make a good external wall water bag sand imitation stone paint project, what kind of base surface is to meet the standard?

    To make a good external wall water bag sand imitation stone paint project, what kind of base surface is to meet the standard?

    • Last Update: 2020-10-04
    • Source: Internet
    • Author: User
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    With its excellent performance and atmospheric appearance, water-wrapped sand imitation stone paint has been a popular product in the construction exterior decoration market in recent years. However, to make a good external wall water bag sand imitation stone paint project, the grass-roots treatment and testing steps are essential.
    1, strength
    low grass root strength will affect the adhesion of the coating

    . Qualified grass-roots should not drop powder, sand, no empty drum, no skin, cracking and peeling phenomenon.
    2, flatness
    the unevenness of the grass roots will affect the final decorative effect of the faux stone paint of the outer wall. There are four main aspects of flatness inspection: surface flat, yin and yang angle vertical, facade vertical, yin and yang angle square.
    3, dryness
    grass moisture comes from mixed cement, moisture will bring alkaline substances to the surface to damage the coating, so the grass must be thoroughly dried before spraying primers.
    4, acidity
    base alkalinity will not only affect the bonding of the coating, but also cause the coating color change, peeling, whitening, flowering and other quality accidents, usually the base pH value should be less than 10.
    5, the degree of
    to remove the grass surface of the slurry, dust, oil, etc. , so that the surface is conducive to the bonding of the coating.
    bed surface treatment, only the outer wall of water-wrapped sand imitation stone paint construction has a basic guarantee, and to make the entire water-packed sand construction project to achieve an ideal effect, Ismanho crystalite imitation stone paint construction master in the continuous practice also summed up the following experience: . First, stirring
    due to the water bag sand imitation stone paint production immediately package sent to all parts of the country, in long-distance transport or shelved for too long, precipitation phenomenon will occur, open the barrel before construction can be used hand from the bottom to gently stir a few times can be uniform, imitation stone paint color point before the factory has been adjusted viscosity, not recommended water dilution.
    2, the temperature
    is usually above 5 degrees C, 35 degrees C below the temperature conditions of construction, suitable for construction of air humidity of 60%-70%, rainy days can not be constructed, to ensure that the spray within 24 hours can not rain;
    3, air pressure
    air compressor air storage capacity of more than 12 kg, air pressure to reach more than 8 kg, the actual amount of water sand coating per square about 1.2KG to 1.5KG, the demand is relatively strong Convex shape imitation stone paint will use 1.6 to 2KG, so the coating rate of imitation stone paint will vary due to the size of the product itself particles, product construction modeling, roughness of the base surface, before construction should be based on the site conditions to test the coating rate.
    Se four, hair flower
    imitation stone paint hair flowers in the construction is more common, the phenomenon of flowering is not sprayed uniformly, sprayed thick place and spray thin place color is not consistent, spraying is recommended thin spray many times, multiple molding can avoid hair flowers, recommended the use of the same color primer.
    Five, color difference
    products arrive at the scene first small area spray test imitation stone paint color, imitation stone paint color in line with the standard model can be large-scale construction, because imitation stone paint is basically the use of natural color sand raw material configuration, so there will be a slight color difference between batches, which is a normal phenomenon, it is recommended that the same batch of materials used in the construction of the same group of people to build on the same wall. The whole wall should be from the top down, one breath into one go, to avoid intermittent construction caused by the old and new colors. Plane effects and hair effects produce sensory differences, noting that certain colors differ in backlight and positive light, direct sunlight, and refraction.
    6, repair color difference
    after the construction of a wall as far as possible to leave a few barrels of the same batch of products in order to repair the defective wall during the project sweep phase, to avoid the color difference caused by the sweeping tail repair phenomenon. If there are two batches of imitation stone paint on the same wall, it is best to bottom with the second batch at the joint, the spray surface construction of the last batch, the color difference between the transition two batches, construction a distance after the construction of the second batch.
    7, whitening
    there are 2 kinds of whitening, one is the phenomenon of concrete wall re-alkali, fingers will touch a white powder, and the other is no roller coating glossy paint when there is no such phenomenon, roller coating after the appearance of whitening, like fog on top, This is due to the rough surface of imitation stone paint uneven, roller coating glossy paint when no roller coating uniform, resulting in the surface paint accumulation in the groove will appear this phenomenon, it is best to use spray construction, imitation stone paint construction after 48 hours after drying cover glossy paint.
    8, window sill, platform position
    because the window sill, platform position is better spray, easy to cause a one-time thick coating phenomenon, in the spray window sill and platform position should be the window sill and platform on the top of the falling gravel removed clean, and then sprayed window sill or platform position.
    , professional
    construction party should choose a strong professional water-packed sand construction team, to ensure that the entire external wall water-wrapped sand imitation stone paint construction effect.
    .
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