The wall is old and then refurbished

The refurbishment of the old wall is much more complicated than the painting of the new wall, so the complex steps naturally will be indispensable.


01

Clean the wall

Before the renovation, the old wall surface must be treated with a wall surface base. All the powders must be thoroughly removed, and the white cement should be removed after eradication. The original wall was too smooth, and after brushing off the paint, it was polished and the loosely bonded skin was removed to facilitate the adhesion of the new paint and the wall.

02

Brushing primer

The role of the wall primer is to resist alkali moisture, to seal the substrate, to protect the topcoat, and to improve the texture and hiding power of the topcoat. For the renovation of old houses, the walls must be painted with primer. If the paint is applied directly on the walls, the walls will tend to foam and mold in the future, and the sun will take a long time to discolor.

03

Large area repair

In the repair of painted walls, it is relatively difficult to achieve the desired results. Therefore, it is best to repair the wall surface by repairing the whole wall surface or selecting a larger area for repair as much as possible. In this way, the color difference can be avoided as much as possible, and the quality after repairing is also better.

04

Color difference

Color differences occur on walls, which is avoided when repairing walls. To this end, it should be noted that according to the description of the paint bucket, brushing, it is best to estimate the amount of good. It is important to prepare a sufficient amount at a time so that the color of the wall can be guaranteed.

Of course, after all, the old wall is different from the new wall. When refurbishing it, you must pay special attention to:

铲 If necessary, remove the wall: If it is a water-resistant putty for more than five years due to the aging of the material, it must be removed to the bottom of the wall during the second decoration, otherwise it will affect the construction quality of the wall surface emulsion paint and the long-term use effect after the decoration.

❷ Pay attention to ventilation: The ventilated condition of the old house is poor, and the xylene component in the thinner chemically reacts with the components in the latex paint, resulting in yellowing of the walls. Therefore, it is not enough to strengthen ventilation. Several electric fans must be placed to enhance ventilation.

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