What should I do if the external wall of the building leaks?

We can take some measures after finding out the causes of the leakage of the external wall. For this kind of external wall leakage, we mainly repair the mortar layer, surface cracks, empty drum layer and leakage micropores of the external wall to restore the waterproof protection function of the cement mortar layer.

When the external wall leaks, if the gap on the wall is wide, the gap should be wetted with water and filled with inorganic waterproof plugging materials. If the gap is narrow, polyurethane waterproof coating can be used to brush the gap, and its thickness should be controlled between 1- 1.5 mm during brushing.

Extended data:

Precautions:

1, cast-in-place structure formwork support must be removed after cast-in-place reinforced concrete reaches a certain strength. Cantilever structure can only be dismantled when the cast-in-place reinforced concrete reaches 100% (generally more than 28 days).

2. The wall is the bearing and enclosure structure of the house. There are holes left by external scaffolding Rachel on the external wall. Be sure to block the holes with bricks before painting. , and then painted with cement mortar, otherwise this part is easy to seep.

3, masonry should be staggered up and down, inside and outside build by laying bricks or stones, adopt the way of alternating brick by brick masonry, masonry mortar joint should be full, head joint should be full, shall not leave open hole.

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Baidu Encyclopedia-Waterproof and Leakage Treatment Technology of Building Exterior Wall