Is there any requirement for humidity when painting paint during decoration?

Latex paint is generally in hydropower, carpentry is done, after sticking to the ground, you can do the wall wall needs to be brushed three times fixed glue, the first time the fixing glue is dry, in order to brush the fixed glue again, the wall brush fixing glue is mainly used to protect the wall, to avoid new cracks, peeling, falling off and other situations at the cracks after fine decoration. If the second-hand house decoration wall, it is not recommended to use wall fixing glue, the bottom layer of the wall paint is brushed, after the overall solidification and drying, you can scrape the putty, there are many kinds of putty, and the wall decoration of the new house uses 821 water-resistant putty. Water-resistant putty cures well, is insoluble in water, the first putty smooths the wall, the last two putty also smooths and whitens, and the first putty is dry.

It is best to carry out the construction at about 15-25 degrees, which is also a relatively comfortable temperature for the human body. The lower the temperature, the lower the activity of the internal components of the latex paint, which is not suitable for construction, which may affect the construction quality, and the slow water volatilization under low temperature conditions affects the film-forming effect of the latex paint. The wall base putty should be in a dry state, generally about a week after the completion of the wall putty for latex paint construction, the specific putty drying situation shall prevail, generally the putty is fully dried after the construction.

At the same time, check the putty wall, no cracking, no hollowing, high wall flatness, no sandpaper polishing marks. If there is a problem, the latex paint can be repaired in time in hydropower, carpentry, and the wall can be made after the ground is pasted.

After your hydropower renovation is completed, repair the holes in the wall, use the wall solid to treat the wall base layer after repairing, and then scrape the putty twice on the wall, and after the second putty is dry, polish the putty, and then brush the wall paint after the putty is polished, remember to primer once, topcoat twice! According to their own preferences and needs to choose the right color, it is important to be sure to choose environmentally friendly water paint products with low VOC content and low odor, so as not to unconsciously get used to an air that is not good for their health after living in, such as the bird's nest series of Chenyang water paint natural deodorant series lotus leaf series products can be.

There are certain requirements, because if the humidity is relatively high, it will take longer for the paint to dry, so it is required to be proficient in the worker.

On the one hand, the moisture in the cement or mortar that has just been constructed has not completely faded, and on the other hand, the humidity is too high due to excessive humidity or rain. Excessively wet walls can affect the adhesion of the paint film, causing the film to blister, crack, fade and promote mold growth. And in the process of water evaporation and drying, the salt and alkali of the wall will seep out and accumulate on the surface, which will damage the paint film and fade the color.

Therefore, the humidity of the wall before construction is limited to less than 6%. There should be a curing period of at least 28 days after the cement wall is formed and the mortar is plastered, so that the cement is completely cured, the dimensions are stable and the wall alkali seeps out and is washed off before painting.

Of course, there are requirements for humidity, if it is too dry, the paint is easy to crack, and the effect of burning out is not particularly good, we must maintain a certain humidity, and the paint will be beautiful when brushed out.

There are certain requirements, so that the decoration of the home can feel better, and the paint can be used for a longer time.

There are requirements for humidity when decorating paint, relative humidity.

Not more than 85%. Therefore, it is not suitable for yellow plum in the rainy season.

Day painting, preferably in sunny and dry weather.

In general, the best order of painting seasons is: Autumn, Winter, Summer, and Spring. Autumn is the best season to paint, with relatively stable temperatures and climate.

Since it takes a while for the new paint to dry, the external environment is relatively stable in autumn, which is more conducive to the drying and curing of the paint film. On the contrary, spring brushing is immediately followed by summer, and the temperature and environmental changes are drastic and frequent, which has a great impact on the curing of the coating film.

Rainy day. You can paint latex paint.

Is it? In general, when the humidity of the air.

When it is greater than 85% and the water content of the base layer is greater than 10%, it cannot be constructed! Especially in rainy days, the humidity is high, and it is not suitable for construction. Latex paints have a film-forming period and a drying period, and under normal humidity, the two are almost synchronized.

If the air humidity is higher than 85%, the film-forming period has not ended, and the latex paint has not dried for a long time, which will affect the film-forming of the latex paint, and the wall will be easy to chalk in the future. Therefore, it is best to brush latex on a sunny day, with one day between each process. If you have to be on a cloudy day.

work, you'd better dry the house with some heating equipment.

Can it be painted in cold weather? In general, the weather is dry in winter. If you do not master the degree of interior decoration, putty.

It is very thick, and the water loss rate is very fast, which can easily cause unevenness, hollowing, and cracking of the wall. Winter painting requires a high indoor temperature, for example, the indoor temperature of mixed color paint should be above 0, the construction environment temperature of ordinary paint should be above 5, and the construction environment temperature of varnish should be above 8. When painting in winter, the temperature may be difficult to meet.

If the temperature does not meet the requirements, the paint will be difficult to dry, affecting its gloss.

If the construction must be carried out in winter when the temperature is low, this can be done: it is necessary to increase the amount of thinner, since the consistency of the paint decreases with the temperature, and the diluted paint is helpful. If the indoor temperature does not meet the requirements, some heating equipment such as electric fans can be used.

Increase the indoor temperature appropriately. After painting in winter, the best time for ventilation is between 10 a.m. and 4 p.m., and if it lasts for a long time, it should be timely and moderate. When cold air hits in winter, windows must be installed, otherwise it can damage the surface and cause cracking.

Of course, there are requirements for humidity in decoration brush paint, latex paint.

Generally, after the water, electricity and carpentry are all done, the bricks on the ground can be used as the wall. The whole coating process requires three fixing rubbers, and the first pass must be completely dry before the second pass. The most important thing to brush the wall is to protect the wall and avoid cracks and peeling after decoration, so the requirements for humidity are very large.

If it is rainy weather, work should be stopped and renovated after drying. It is not recommended to paint the wall when it is wet, so that various problems will occur in the later stage. <>

If you paint the wall, the temperature is between 15 and 25 and you can start the construction, and basically this temperature is in summer and autumn. The humidity in both spring and winter is very high, which may affect the construction effect. The lower the temperature of the latex paint construction site, the lower the activity of the latex paint components, which is not suitable for construction.

It will also affect the quality of the later stage, and the water volatilized by it is relatively slow under low temperature conditions, which will affect the film-forming phenomenon of latex paint. <>

After the entire latex paint wall is painted, it can also be repaired with fixed glue. Remember to paint the primer strictly according to your favorite color, the most important thing is to choose low-odor and green products, so as not to have a great smell after living in, so that life is not used to it, and it will also have an impact on health. It is generally said that the latex paint house will emit formaldehyde for two months after the decoration before it can be safely moved in, so don't worry.

Latex paint is very important in the whole process of construction, as long as the wall is treated properly, the effect of painting latex paint is better. There are many brands of latex paint in China that are very good, and the most important thing is to meet the requirements of people's lives today. Don't think that painting latex paint is a very simple job, and you should stop working when the indoor temperature drops below 5.

In addition to the humidity problem, it is also necessary to choose non-toxic decoration materials to avoid decoration pollution during the high incidence period. You can also buy the material and choose dry weather or leave the material in two days to make it about the same humidity as the surrounding area, so that it is also suitable for use.

There are particularly high requirements, the humidity should be less than 50%, if the humidity is relatively high, it is easy to have a back-moisture situation.

The requirements for humidity are very high, and if the humidity content in the air is relatively low, it is particularly easy to have cracks after brushing the paint.

When brushing the paint, you must pay attention to the humidity not too heavy, because it is easy to peel in the later stage, and it is easy to fall off in the later stage, so generally such procedures need to be done by experienced people.

When the oilman sprays all kinds of paints, he should be painted in strict accordance with the temperature in the product description, the ambient temperature of the paint should not be lower than 5, and the ambient temperature of the varnish should not be lower than 8. After 48 hours of 60% relative humidity, the latex paint can be ventilated and the humidity can be reduced, because the humidity is too fast to dry when the latex paint is completed, which can cause fine cracks.

Art paint construction on the air humidity is also required, can not be too low humidity, too low humidity will affect the quality, can not be too high humidity, too high is easy to crack, and with cement mortar plastering, the residual ash shovel clean, and then the wall is clean. 3. Repair the wall: Use plaster to level the bumps and potholes and gaps on the wall, and grind off the protrusions with sandpaper after drying, and sweep away the floating dust.

The waterproof coating is wetted on the construction base surface before brushing, pay attention to moisture control, and the base surface is required to have no open water, the paint needs to be stirred evenly during construction, and the direction of the painting is cross-shaped, and the second coating is carried out after the first surface drying, and the second coating can not be too thick 85% (theoretically, the minimum film-forming humidity of latex paint can be adjusted to 0, but the paint film is thin when actually painting, and it is easy to freeze and destroy latex particles in a cold environment, and because of the low temperature of the film-forming environment, it is easy to cause incomplete film-formation. Gang should avoid the cold.

So the best time to ventilate after painting in winter is between 10 a.m. and 4 p.m. Normally, it is cold in winter, and the doors and windows are closed during construction. It can effectively reduce the concentration of dust particles in the air, which also reduces the adhesion of the paint surface to be carried out after the last drying.

Each topcoat should not be too thick to avoid cracking). Maintain good air circulation at the construction site and avoid drying in the shade. Each process is dried naturally, remember not to dry with iodine-tungsten lamp.

We brush paint when decorating, and the ambient temperature of the general paint should not be less than 5. The ambient temperature of the varnish shall not be lower than 8, and the window can only be opened after the paint is fully dried, otherwise there will be cracking.

In general, the optimum application humidity of coatings is between 60-70%. Low humidity is conducive to coating film formation, but too low humidity and dry air will also lead to rapid volatilization of coating solvents, poor film formation, and poor coating quality.

I know very well about brushing paint, because I have a friend who has brushed a few times when decorating at home, I have also understood, I heard that the humidity of brushing paint can not be too wet, the ratio of water and paint is 4:1, this ratio is very easy to make the wall tidy, and stable, the effect is particularly good.

In general, the best application humidity of the coating is between 60 and 70 percent, and the lower humidity is conducive to the formation of the paint film.

1. From the perspective of construction climate.

Latex paint in the interior.

It is recommended to avoid rainy weather or the rainy season. The damp environment can easily lead to mold on the old wall, which will affect the effect of the new latex paint wall, and the drying speed of the latex paint will be slow, which will prolong the overall painting period.

2. From the perspective of family members.

Choose to paint when there are fewer people in the house. Although latex paint is an environmentally friendly paint, it will still volatilize a small amount of harmful substances for a period of time after painting, so it is still necessary to avoid large family members or major holiday activities.

3. From the perspective of decoration.

Generally speaking, latex paint should be applied before placing other objects such as the home. In this way, there is no need to spend additional time and money on the protection of the ground. If the old house needs to be renovated, it must be arranged to enter the site after the construction of the latex paint is completed, and it is generally recommended to carry out it in sunny weather.

Brush paint because there are many kinds.

Polyester paint: temperature 18 -25, relative humidity less than 75%; If the humidity is too high, the paint film is easy to blister.

Nitro paint: 18 -25, relative humidity is lower than 75% (relative humidity higher than 95% nitro paint can not be constructed, humidity is lower than 0, humidity is greater than 75%, will cause slow drying, slow response, loss of light, whitishing and other phenomena).

Latex paint: more than 5, the relative humidity is less than 85% (theoretically, the minimum film-forming humidity of latex paint can be adjusted to 0, but the paint film is thin when actually painted, and it is easy to freeze and destroy latex particles in a cold environment, and because of the low temperature of the film-forming environment, it is easy to cause incomplete film-forming.) Gang should be protected from cold and rain).

It can't be lower than 5 degrees Celsius, and the weather above 5 degrees Celsius is most suitable.

The putty can not be scraped too thick during the decoration of the winter sleepy bridge season, because the indoor air is dry and the water loss is fast, otherwise it is easy to cause hollowing, cracking, and wall inequality. When the oilman sprays all kinds of paints, he should be painted in strict accordance with the temperature in the product instructions, the ambient temperature of the paint should not be lower than 5, and the ambient temperature of the varnish should not be lower than 8.