Paint knowledge | basic steps and precautions for old wall renovation and painting

Core tip: whether the wall renovation is wall paint, wall brick or wallpaper, in order to better the effect of renovation, the basic part of the wall should be reprocessed If some walls need to be demolished, it is necessary to pay attention to the treatment of bearing walls Basic treatment of the old wall: mainly refers to the removal of the original decoration and decoration of the wall, generally including the removal of the original emulsion paint and putty layer of the wall, the original wood decoration, the removal of other original surface decorations such as wallpaper, etc If the wall is only decorated for one or two years, the water-resistant putty of the wall can be removed completely After the wall is polished with steel brush and sandpaper, the emulsion paint can be applied again Basic steps of wall renovation: Step 1: Application scope and advantages of roller ceramic coating Recommended introduction: the surface of ceramic rubber plate used for roller ceramic coating is cast into durable rubber plate by hundreds of independent small ceramic pieces Each ceramic piece has raised characteristics Under general conveyor belt pressure, thousands of unique cast bumps can produce positive traction, prevent slipping and extend the service life of conveyor belt roller At the same time, the bottom layer adopts high-quality rubber, which has strong elasticity and can play a good impact resistance role The scope of application of roller ceramic coating is one three six 83857180 (the same as V) 1 Roller coating in extremely harsh working environment 2 The belt joint is not suitable for fixing with iron buckle; 3 It is suitable for leather Paint Home News: whether wall renovation is wall paint, wall brick or wallpaper, in order to better the effect of renovation, we should reprocess the basic part of the wall If some walls need to be demolished, it is necessary to pay attention to the treatment of bearing walls Basic treatment of the old wall: mainly refers to the removal of the original decoration and decoration of the wall, generally including the removal of the original emulsion paint and putty layer of the wall, the original wood decoration, the removal of other original surface decorations such as wallpaper, etc If the wall is only decorated for one or two years, the water-resistant putty of the wall can be removed completely After the wall is polished with steel brush and sandpaper, the emulsion paint can be applied again The basic steps of wall renovation: Step 1: clean the wall surface -- before renovation, the old wall surface must be treated with wall base, and the severely powdered wall surface must be completely eradicated, and the white cement shall be used for the first time The original wall surface is too smooth, and after the removal of the paint, it needs to be polished to remove the skin which is not firmly bonded, so as to facilitate the bonding of new paint and wall The second step: brush the primer -- the function of the wall primer is to resist alkali and moisture, seal the base material, protect the top coat, and improve the texture and covering power of the top coat For the renovation of the old house, the wall must be painted with primer If it is painted directly, the wall is easy to blister and mildew in the future, and it is easy to change color when it is exposed to the sun for a long time The third step: large area repair - in the repair of painted walls, relatively speaking, it is difficult to achieve the desired effect Therefore, the best way to repair the damaged wall is to repair the whole wall or choose a larger area as much as possible, so that the color difference can be avoided as much as possible, and the quality after repair is better Step 4: prevent color difference - the color difference on the wall is avoided as much as possible when repairing the wall Therefore, we should pay attention to the proportion and painting according to the instructions of the paint barrel, and it is better to estimate the amount It is very important to prepare enough quantity at one time, so as to ensure the color consistency of the wall Note: due to the aging of materials, the water-resistant putty over five years must be removed to the bottom of the wall during the second decoration, otherwise it will affect the construction quality of the wall latex paint in the future and the long-term use effect after decoration The ventilation condition of the old house is poor The xylene component in the diluent will react with the component in the latex paint, resulting in the yellow wall Therefore, we should strengthen the ventilation, which is really not good We should place several electric fans to enhance the ventilation effect Demolition and renovation of old walls: at the same time of space renovation, it is necessary to understand the wall characteristics of the house The walls that cannot be demolished in decoration belong to load-bearing walls, and some non load-bearing walls cannot be demolished or renovated at will, otherwise it will cause serious impact on the safety of the house How to distinguish the bearing wall? Generally, it depends on the mark on the engineering drawing The thick and solid line part in the construction drawing and the wall under the non bearing beam in the ring beam structure are bearing walls, while the non bearing walls are generally marked with thin solid line or dotted line on the drawing In addition, it can also be distinguished according to the thickness of the wall Generally, the wall above 240mm is a load-bearing wall Some walls cannot distinguish thickness, but they are also load-bearing walls, such as external walls and walls shared by neighbors, which are easy to distinguish 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,