Common knowledge of coating: details of wall painting and treatment of common problems

Core tip: editor's note: blistering, cracking and peeling on the wall are the most common problems reflected by consumers Not long after the decoration, the wall or the top of the house began to blister, crack and peel What's the reason? Professionals pointed out that, generally speaking, using high-quality paint, the wall can be used normally for 5 to 8 years It is not normal to have blistering, cracking and peeling in a short period of time There are many reasons for these problems, which should be analyzed according to the actual situation The expert reminds consumer, stare at the metope that decorates when besmear this, should grasp besmear detail Here's a brief introduction of wall painting Paint knowledge how about Akzo Nobel Powder Coating Recommended introduction: powder coating is a kind of coating with different form from general coating, which is in powder form It is a new type of coating, because of its own advantages and more and more known by people Let's introduce Akzo Nobel Powder coating Akzo Nobel Powder coating is a cost-effective coating solution, which can be applied to different kinds of products After the treatment of static electricity and fire baking, a tough and durable coating surface will be formed, with the least impact on the environment Since the introduction of this technology, powder coating has been able to continue to maintain the Paint Home News: editor's note: Wall blistering, cracking, peeling is the most consumer reflection of the problem Not long after the decoration, the wall or the top of the house began to blister, crack and peel What's the reason? Professionals pointed out that, generally speaking, using high-quality paint, the wall can be used normally for 5 to 8 years It is not normal to have blistering, cracking and peeling in a short period of time There are many reasons for these problems, which should be analyzed according to the actual situation The expert reminds consumer, stare at the metope that decorates when besmear this, should grasp besmear detail Here is a brief introduction to the details to be grasped in the process of wall painting and the treatment of common problems after wall painting Preparation before wall painting: it is very important to carry out relevant preparation before formal wall painting First of all, the most important thing is to decide the overall decoration color, and to buy high-quality environmental protection wall paint After carefully selecting the wall paint, do not think that you can brush the wall immediately In order to obtain high-quality coating, it is absolutely necessary to carry out a series of preparations for the wall before painting This is called surface treatment before painting, which has a great influence on the quality of the whole coating Putty: it is better to choose putty with high particle fineness and hard texture You can also add a certain amount of white emulsion in the putty to improve the hardness of the putty Sanding: try to use fine sandpaper, generally use 400-500 sandpaper for soft putty, 360-400 sandpaper for hard putty, if the sandpaper is too thick, it will leave deep sand marks, and the paint can not be covered After polishing, the wall must be cleaned thoroughly to avoid too much dust, affecting the adhesion of the paint Wall painting construction work: This is certainly not what we can do If we don't have full assurance, we'd better ask professional oil workers Now the wall coating is generally flat coated with wool brush or roller, but brush marks are easy to appear, and orange peel is easy to appear in roller coating, so many companies have equipped spray guns for oil workers to overcome these problems In particular, before spraying, the wall surface must be treated well, and the wall surface shall be polished with coarse sandpaper to be smooth After the wall surface is treated well, the oil workers shall check it, and the construction can only be carried out if it is qualified Spray a higher degree of fineness, than brush and roll to be uniform, and more paint saving Primer: the primer must be brushed evenly to ensure that every part of the wall is brushed If the wall has a large amount of paint, it is better to add a little more water to the primer to ensure that it can be brushed evenly Do not perfunctory because it is the primer, generally 1 to 2 times is the best Mending: after the putty is polished, there will be some defects (pits) left Generally, it is difficult to see them clearly Only after one coat of paint is brushed, it will be obvious At this time, mending is needed Pay attention to the flattening of mending, and then brush the primer with a little more water to avoid color difference due to different water consumption with other walls In order to get a good effect, the wall paint should be 2 to 3 times, and when the oil workers do the wall paint, it is better to be able to go to the site and point out the effect and insufficient place that they need to get on the wall Work after wall painting: although it will be dry several hours after painting, the dry paint film has not reached a certain hardness, which requires late care It is better not to scrub or touch the wall within 7-10 days Some plants can also be placed to ensure the health of the indoor space, and it is better to ventilate for more than one month after decoration, so that the harmful gases in the room can be distributed as much as possible before entering After entering, more doors and windows should be opened to allow indoor and outdoor air circulation Treatment of common problems on the wall surface: the wall surface with blistering problems will have small sand bubbles raised The causes are: too many pigments are added in the paint preparation or mixed with sundries; the paint barrel, brush, roller or spray gun are not clean; before the paint surface is completely dry, the water penetration makes the paint film lose adhesion; the wall surface is not cleaned before painting Solution: avoid painting in wet season or weather; when painting, wait for the putty or the first layer of paint to dry before painting the next layer; clean the construction environment and clean the wall before latex paint construction Causes of wall peeling: poor workmanship of construction workers; poor adhesion or shrinkage of putty and coating Solution: first of all, choose high-quality water-resistant putty The putty has high whiteness, good water resistance, high bonding strength, no peeling, powdering and falling off after use, which can solve the problem of falling off of wall skin; before applying latex paint, it needs to scrape putty for at least two or three times; adding 108 glue with gypsum powder can increase the viscosity There is also a point that consumers are recommended to use special coatings The interior wall latex paint has a high requirement for scrub resistance It is easy to stain the wall surface in home life and can be wiped with water at any time But the interior wall paint does not have the function of anti sun, so it can not be used to brush the exterior wall Causes of wall cracking: it may be caused by putty shrinkage In the construction, if the previous putty is not completely dry, the next putty will be scraped, and if the second putty is not completely dry, the paint will be painted, causing cracks in the back layer of putty drying shrinkage Solution: during the construction, it is required to wait until the last putty is completely dry before scraping the next one, and the thickness of each putty shall not exceed 2mm During rework and repair, the cracks shall be scraped clean first, and then the putty shall be scraped for repair After the putty is dry, the top coat shall be painted Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,