Knowledge of coating: remedy for wall defects

Core tip: the newly decorated room didn't live for a long time The wall was peeling, powdering and falling off It's very annoying to encounter such problems In fact, the root cause of this problem is not the surface coating and construction level, but the treatment of the base during construction How to avoid these problems? First of all, the wall must be solid, firm and dry with moisture content less than 10% The old base must be cleaned Some developers use 821 putty when handing over the house This kind of putty is easy to be powdered, peeled and peeled off, so it must be removed completely and treated at the basic level again Secondly, before puttying again, one must be painted Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Paint Home News: just decorated the room did not live for a long time, the wall peeling, powdering, falling off, encounter such problems of course very annoying In fact, the root cause of this problem is not the surface coating and construction level, but the treatment of the base during construction How to avoid these problems? First of all, the wall must be solid, firm and dry with moisture content less than 10% The old base must be cleaned Some developers use 821 putty when handing over the house This kind of putty is easy to be powdered, peeled and peeled off, so it must be removed completely and treated at the basic level again Secondly, before puttying again, the primer must be painted once The application of the primer can improve the pH value of the base wall, improve the strength of the base, and make the coating have better adhesion with the base When choosing the back cover paint, we must choose the special primer from the regular manufacturer, and do not use some glue to replace it Finally, the most important step is puttying Two coats of putty are required before applying emulsion paint We should choose the water-resistant putty of well-known enterprises, which has high whiteness, good water resistance and high bonding strength After use, it will not peel, powder or fall off After such treatment, the wall will be painted with qualified emulsion paint, and your wall will be free of worries Whether it is "up to standard coating", "environmental protection coating" or "green coating", first of all, it must comply with the national limit standards for harmful substances It should be said that the paint meeting the standard is safe Although VOC in coating is harmful to human body, it has a problem of quantity As long as VOC is within the limited range, it is not enough to cause too much harm to human body, and consumers do not need to talk about toxic color change at all Like other products, coating market is mixed Mr Anju reminded us not to be greedy for cheap when buying paint, we must choose well-known brand products, so as to ensure the safety of their own and their families Do not superstition the word "green" on the coating packaging, and carefully read the quality inspection report of the product; observe whether there is rust and leakage at the joint of the iron barrel; and pay attention to whether the explicit marks on the iron barrel are complete For imported coatings, it is better to choose products with Chinese marks and instructions As VOC, formaldehyde and other harmful substances exceed the standard, most of them have pungent smell, making people sick and dizzy Therefore, consumers need to choose carefully if they smell the pungent smell when they buy In addition, it is best not to buy the paint with flavors added, because the additive itself is a chemical product Keep the purchase invoice If possible, ask the seller to open the paint barrel and check it by himself If serious stratification occurs, it indicates poor quality; if the coating is stirred gently with the stick, the paint will stay on the stick for a long time and cover evenly after lifting, it indicates good quality; if the coating is dipped in a little by hand, it is better if it is hard to wash off with clear water after drying; if the coating is twisted lightly with the hand, the finer it is, the better (Zhong Jie) paint home is specialized in coating, diatom mud, paint coating, coating process, news information and coating of fireproof coating, diatom mud, paint coating, coating process, decoration knowledge and decoration effect map of fireproof coating,