Paint knowledge | operation methods and precautions for exterior wall coating construction

Core tip: the exterior wall coating is different from the interior wall coating The exterior wall coating is used to brush the exterior of the building, which requires it to have the function of sun resistance, and also requires it to have the performance of non discoloration and water resistance for a long time of exposure Next, I will introduce the construction scheme of exterior wall coating, some specific operation methods and matters needing attention Exterior wall coating construction scheme 1: a good base treatment is the foundation of a good wall, which is very important During the construction, the dust and other adherents on the surface of the base course shall be removed first; the larger depression shall be trowelled with polymer cement mortar, and it shall be checked after the cement is dry 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: the exterior wall paint is different from the interior wall paint The exterior wall paint is used to brush the outside of the building It is required to have the function of sun resistance, and it is also required to have the performance of non discoloration and water resistance for a long time of exposure Next, I will introduce the construction scheme of exterior wall coating, some specific operation methods and matters needing attention Exterior wall coating construction scheme 1: a good base treatment is the foundation of a good wall, which is very important During the construction, the dust and other adherents on the surface of the base course shall be removed first; the large depression shall be trowelled with polymer cement mortar, and after the cement is dry, it is necessary to check whether there are small holes and cracks, if any, it is necessary to repair it with cement emulsion putty in time; In case of wall alkali and frost, it is necessary to brush with zinc sulfate solution or dilute hydrochloric acid solution, clean the oil stain with detergent, and then wash with clean water; in addition, for the base with coating, the old coating with loose, peeling and brittle crack shall be removed, and the old coating with firm adhesion shall be roughened with sandpaper, and all the coating with water resistance shall be removed The external wall coating construction plan two: if the base is bottled, if the wall is loose and absorbable, it can be evenly coated with roller for one to two times on the base of the cleaned layer (acrylic emulsion or water soluble building glue plus 3~5 times water dilution) Then use the adjusted putty to mend the unevenness According to the base conditions and decoration requirements, apply the putty for 2-3 times Each time, the putty shall not be too thick After the putty is dry, it shall be polished with sandpaper in time It is not allowed to grind out the wave shape or leave grinding marks After polishing, remove the floating ash Construction scheme 3 of exterior wall coating: brush the bottom coating and surface coating When brushing the bottom coating, first mix the bottom coating evenly If the coating is thick, dilute it according to the requirements of the product manual Use roller brush or brush brush brush to brush evenly once, and pay attention not to miss brush or brush too thick After the primer is dry, if necessary, the putty can be partially replenished and sanded after drying When painting the surface coating, first mix it evenly When the wall needs color separation, first pop up the color separation line with a powder line package or ink bucket Pay attention to leave a space of 1-2cm at the color intersection during painting One person first uses the roller brush to dip in the coating and evenly spreads it, and the other immediately uses the brush to flatten the coating marks and splashes To prevent bottoming and sagging, each painting surface shall be painted from the edge to the other side, and shall be completed once to avoid joint marks After the first coat is completely dry, the second coat shall be applied, generally 2-3 coats, depending on the situation 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,