Brush latex paint for wall decoration, you must avoid these 8 misunderstandings!

Misunderstanding 1: Primer is not very useful, it can be used without it

As long as it is a wall that has been scratched with putty, primer must be applied.
Even if the old wall is refurbished, the part that has been scratched with putty must be painted with primer.
Because the putty used now is water-resistant putty, which is more alkaline, and the primer has the effect of anti-alkali.
If the primer is not applied, the putty will return to alkali and the wall will become flowery.

Correct way:

Add less water to the primer, and the interval between applying the topcoat should not be too short (preferably not less than 24 hours), otherwise the putty may return alkali after the primer is com" href="http://">applied .
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Misunderstanding 2: The smoother the grassroots treatment, the better

Most people know that the wall surface should be treated before the latex paint construction to ensure that there are no bubbles, cracks, dust, etc.
, so that the latex paint construction effect is smooth.

But is the smoother the wall the better? This is probably another misunderstanding.

Correct way:

Use a fresh brush to brush the bristles of the base layer and remove the oil stains with a solvent.

Misunderstanding 3: Layered latex paint can no longer be used

If there is some latex paint left after decoration, you can cover the bucket and store it in a cool, backlit place.
However, after standing for a period of time, the latex paint may still be stratified.
Many owners think that layered latex paint can no longer be used.

Correct way:

In fact, since the latex paint is a water-based solution, it is normal for layering to occur.
As long as there is no yellowing, mildew, or peculiar smell, it can still be used normally after mixing it evenly, and will not affect the final coating.
Attire effect.

Misunderstanding 4: There is white powder on the hand, and the paint has quality problems

After painting the wall surface, the white powder is stuck with your hand.
You don't need to be nervous.

Most of the “powder” that falls is dust on the wall.
During the construction process, a lot of dust will slowly adhere to the wall, and a similar phenomenon of powder falling may occur after touching it by hand.

Correct way:

It is best to touch the latex paint 24 hours after it is applied to the wall.
If the application temperature is below 5°C, this time should be extended to one week.
Before buying latex paint, it is best to ask the merchant about the grade of latex paint.

Generally speaking, medium and high-end paint will not drop powder, but the lower grade paint has poorer rub resistance and is more prone to powder drop.

Misunderstanding 5: The more expensive the latex paint, the better the effect of brushing

Whether the wall effect of the latex paint is good or not is affected by the quality of the latex paint itself and the construction process.
A "good horse" also needs a "good saddle" to exert its maximum effect.

The higher the grade of paint, the higher the content of raw materials such as emulsion, and the higher the requirements for the construction process.

Correct way:

Before construction, the construction personnel must be required to strictly follow the construction requirements in the product description, especially pay attention to the three requirements of water addition, grassroots treatment and interval time indicated in the product description.

Misunderstanding 6: Qualified latex paint is environmentally friendly

It is not the same national standard that is used to judge whether the latex paint is qualified and whether it is environmentally friendly.
Only the latex paint that has passed the national green ten-ring certification is a truly environmentally friendly product.

Correct way:

Only the surface of the latex paint products that have passed the Green Ten Rings certification will have the corresponding label, and consumers can check whether there is this label when purchasing.
At the same time, you can also ask the merchant for the test report produced by the National Coating Quality Supervision and Inspection Center to check VOC (Volatile Organic Compounds) and other indicators.
The lower the value, the safer and environmentally friendly products.

my country's environmental label certification standards require walls The VOC content of the paint after water removal is 80 g/L.

Misunderstanding 7: The number of times of scrubbing resistance is high, and the wall can be scrubbed with a towel at will

The scrubbing resistance of latex paint is tested by wiping the paint surface with a special machine brush, not the result of testing with tools such as towels.
If you use a towel to wipe as hard as rubbing clothes, the paint film may be wiped, and even the latex paint with a high number of scrubbing resistance may fall off.

Correct way:

If stains appear on the wall, wipe them off in time with a wet towel with normal strength.
For too long, poor quality paint may penetrate and it will be difficult to remove.

Misunderstanding 8: Open doors and windows to dissipate odor

Although latex paint is a water-based paint and has excellent environmental performance, many owners still like to open doors and windows wide after use, one is to accelerate the drying of the wall, and the other is to dissipate the peculiar smell of the paint.
It seems to kill two birds with one stone, but is this really correct? It is not the case.

Especially in the northern dry areas, if the paint drying time is too fast, the latex paint will lose water quickly in a short period of time, which will easily cause the wall to crack and finally have to be reworked.

Correct way:

It is advisable to open a small slit in the window and let the wall completely dry in 1-2 days under the premise of ensuring indoor ventilation.