How to paint the wall in detail steps

How to paint the wall ? Many people have headaches for wall painting. They do not know that if they master the core method, they can do more with less. Everyone on the wall will see that every day, if the wall is not doing well, it will not only affect the overall environment in the home, but also make the residents feel bad. The following small series briefly introduces the detailed steps of how to paint the wall .

Steps a big check.

Check thoroughly whether the cement wall surface that needs to be painted in the rough house is firm and flat. If the plastering layer of the wall is not strong enough or there are large cracks and holes, it is recommended to complain to the developer or property and ask them to redo. Individual holes are repaired by themselves and can be filled with plaster.

Special Note:

1 Checking whether the wall surface is firm and flat is a step of checking homes. Look at the wall is not solid, simple test methods are as follows: find a hard point of the object (such as keys, screwdrivers, etc.), draw a stroke on the wall to see if it is not dregs. There are no shortcuts to finding cracks and holes, but only care and patience.

2 Generally, it is not recommended to put paint on kitchen and bathroom scraper, preferably tile. Tile is also a science, this will be discussed later.

· Step 2 product protection.

There will be dust when handling the wall, and there will inevitably be putty, paint or other glue dripping, so be sure to do a good job in the protection of the finished decoration of the room in advance.

Special note: The separate protection work is listed as a step to increase everyone's attention. You must not leave any regrets for the momentary relief, especially when there are some homes that are not resistant to dirty decorations!

· Step 3 Preparation before scraping.

Make sure the wall is solid and flat. Use a steel brush or other tool to clean the wall so that the cement wall is free of floating soil and floating. Roll over the concrete interface agent on the wall and try to make it uniform. When it is dry (usually more than 2 hours), it can be putty.

Special Note:

1 The use of the interface agent: to close the base layer, prevent putty due to cement wall surface loose, floating soil or too dry and other problems and its surface is more suitable for cement putty than cement wall surface.

2 If you do not plan to brush the interface agent, be sure to pay attention to the following text: Summer construction, the wall is dry, before the construction should be roller again (no water left), to prevent the putty due to excessive water absorption and pinholes or cracking.

3 Newly-developed cement walls (such as the developer's redo plastering) must wait until the cement's 28-day curing period has passed before it can be putty. Otherwise, the phenomenon of putty bubbles and insufficient strength will easily occur.

4 patch (kraft paper): Its main role is crack resistance, high cost, the general wall does not have to do. However, for the insulating wall surface, the looser wall surface, and the cracked wall surface, the patching effect is more obvious and can be considered for use.

· Step 4 putty (please choose water-resistant putty).

The smoothness of the wall surface should be measured before the putty is used (using a measuring rule of 2 m or more) to determine the method for scraping the putty. The general wall scrape 2 putty can, can both level, but also cover the background. Poor flatness requires a few more scrapes in the area. If the flatness is extremely poor and the wall is steeply sloping, consider scraping the plaster first to level it, and then scrape it. Every time putty scraping interval should be more than 2 hours.

Special Note:

1 Select water-resistant putty: 821 is the type of putty that has been ordered to limit use, it is not water resistant, not strong, easy to peel, cracking, many workers often add white latex, 108 glue and other glue to increase the strength of 821, for health Left a hidden danger. The water-resistant putty does not have the above-mentioned risks. It is strong, water-resistant, water-resistant and can be used without any glue, and long-term use does not require eradication (10-20 years). It is a product that can truly achieve “long-term benefit of one-time construction”. For a detailed comparison, see my signature links to other knowledge posts.

2 The construction of water-resistant putty should not be scraped too thick. Otherwise, it will crack during the drying process. This is the omission of the fly. Therefore, if the flatness is poor, it will require a lot of construction, and even use gypsum to make thick and thick foundations. Gypsum is not water-resistant, not strong, and the solidification time is extremely fast. It is obviously not suitable for plastering plaster in houses.

3 When mixing water-resistant putty, it should be configured in the ratio of powder:water=2:1, stir it once with electric drill, leave it for about 10 minutes after being evenly distributed, and then mix it with electric drill, then it can be used.

· Step 5 polish putty.

After the water-resistant putty is completely on strength (5-7 days), it becomes extremely solid, and it becomes extremely difficult to perform sanding again. Therefore, it is recommended to start putty grinding 1-2 days after scraping the putty. Polishing Optional At night, use an electric bulb of 200 watts or more close to the wall lighting, while grinding to see the flatness.

Special Note:

A lot of dust will be generated when the putty is polished. Please provide masks for the participants. Although the putty is non-toxic and harmless, the dust is not a good thing. Take precautions.

· Step six brush primer.

After cleaning the floating dust on the polished putty surface, you can apply the primer. The primer can be painted once and it must be even. After it has dried (2-4 hours), the next step can be performed.

Special Note:

1 About Primer: The primer works like a concrete interface agent, but in addition to providing good adhesion, the primer can also save some of the topcoat. Now that the pace of life is fast, many families can't wait for the putty to completely dry and the alkali disappears (5-7 days) before painting. At this time, it is more necessary to brush a layer of alkali-resistant primer to seal off the alkali that is resistant to water. Sex (This is another flaw in water-resistant putty), otherwise the paint is prone to problems, especially with colored paint, and there may also be map-like color unevenness.

2 Whether the primer needs to be mixed with water can refer to the instructions for the purchased primer and are different.

· Step seven brush finish.

The top coat usually has to be brushed twice, and each pass should be separated by more than 2-4 hours (depending on the dry time of the watch) until it is substantially dry. After the second round of paint brushing, it takes 1-2 days to completely dry. Before the paint is completely dry, it should be waterproof, drought-proof, and sunscreen to prevent the paint film from having problems.

Special Note:

1 brushing method: roller coating and spraying have their own advantages and disadvantages, roller coating film surface is natural, texture, and paint consumption is not much, spray paint film surface is delicate and smooth, but more paint consumption. Specific choices can be determined based on personal preferences and economic capabilities.

2 Watering capacity: Most latex paints are more viscous and often require some water for better construction. The specific amount of water for each paint is different, up to but not more than 30%. It should be noted that the colored paint must be prudent, otherwise it is prone to uneven color.

· Step 8 acceptance.

The survival wall should be solid, smooth, vertical and horizontal, no cracks, no holes, uniform color, full paint film, but also pay attention to check the protection of finished products.

Special Note:

After the paint film dries out, the big work is basically completed, but don't let it go, bite the teeth and finish the acceptance work!

pay attention

1. Pay attention to the weather before painting the walls, avoiding the operation before the rain and snow weather, and the humidity and humidity of the rain and snow are not good enough for the wall to dry after painting.

2, the wall humidity can not be too large, if you brush latex paint, the wall humidity can not be greater than 10% (and some products require humidity can not be greater than 6%), if the humidity is too large, the moisture in the wall pores will block latex paint Penetrates the wall and affects the adhesion of the paint film. And the evaporation of water will cause the paint to foam.

3, the wall can not be too alkaline, the general requirements of the wall paint latex paint, alkaline PH value should be less than 10, the new concrete, cement mortar and lime mortar alkaline, pay attention.

Information on how to paint the walls was introduced here for everyone. I hope this article has helped you. If you still have anything you don’t understand, you can follow our website and we’ll get back to you as soon as possible.

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