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The exterior wall should be exposed to the wind and the sun, which tests the weatherability of the gum. Therefore, the exterior wall construction must be strictly required. Today, we will learn about the technological process of exterior wall construction.A, first we clean up the walls at the grass-roots level, exterior wall is generally for the problems at the grass-roots level up dust, serious may rise sand, so we should according to the condition of less at the grass-roots level to clean up the construction, after the first sweep the dust using emulsion JW301-20 alkali resistant primer to construction, this lotion is a vitrified temperature reached 23 c, is a high hardness of the emulsion.According to the requirements of the base surface treatment, the emulsion is mixed with water. The ratio of powder to water is 1:4, and the ratio of sand to sand is about 1:2.5. After the base surface is processed, the base surface is completely dry.Two, followed by the back of the ceramic tile for gum brushing, with the roller rolling brush gum to ceramic tile surface thin layer, such as dry!Brush and paste!Well!!Three, and cement mortar, this is one of the most important link, is generally experienced construction master basic won’t be a problem, because they are on the proportion of cement mortar is clear, for cement mortar mixing degree is also very understanding, after mixing the cement mortar, directly on has besmear brushs well above the back glue of ceramic tile ceramic tile, were erased.Four, the last is on the wall, tile on the wall, with a small leather hammer, even knock tile tile to achieve horizontal balance!Support the tile with a hard object or shelf until the moisture in the cement evaporates.The above four points are the construction process of ceramic tile gum, and pay attention to details!