Source lei told you | waterproof coating the thicker the better?
source lei told you | waterproof coating the thicker the better?
Now,The problem of water leakage in housing construction is frequent, and the global building leakage rate remains high.The root cause is the problem of materials and construction. First of all, the material is the problem of fake and shoddy, and the construction is what we often say to cut corners, blindly reduce the use of materials and reduce costs.Since "material reduction" will cause problems, is it better to brush as thick as possible?
Waterproof coating is not the thicker the better
First of all, waterproof coating is too thick will causeUneven brushingAfter drying, the uneven places willdelamination cracking, and even accelerate water leakage (Especially at the junction between the ground and the wall, around the sewer pipe）; Secondly, when laying ceramic tiles, too thick waterproof coating will lead to cement mortar or ceramic tile glue smeared on ceramic tiles,Water cannot penetrate quicklyGet in there. The tiles that are laid in this way cannot be tightly fixed to the wall, and the tiles willEasy to hollow drum loose, even peeling.
Regarding the thickness of waterproof coating, relevant standards and specifications have clear requirements, suchJGJ298-2013 Technical Code for Indoor Waterproofing of Residential BuildingsThe minimum thickness of the waterproof layer of indoor waterproof engineering is required to be standardized, and the thickness of the waterproof layer is different for different types of waterproof coatings.
For example: if selectedPolymer cement waterproof coating, the plane should be not less than 1.5mm thick, the vertical plane should not be lowerThick; if selectedWater emulsion type asphalt waterproof coating, the plane should be not less Thick, the vertical plane should not be lowerThick; if selectedThe thickness of waterproof mortar mixed with waterproof agent shall not be less(The thickness can be appropriately adjusted depending on the technical performance of the product).
How to ensure the thickness of the coating waterproof layer
Waterproof thickness, height should not be too thick too high, to ensure that the thickness of the waterproof coating can be achieved by controlling the amount of material per square meter.The construction principle of waterproof layer is "thin brush multi-layer", the correct operation should be: generally brush twice,From top to bottom, from far to near, the second time of brushing, the waterproof layer should be brushed on the premise that the waterproof layer is not sticky before brushing, and the two times before and after brushingA cross, thickness to reach 1.5~2mm thick.
The waterproof of the ground needs to be painted from the inside out, and in the process of paintingEnsure uniform and delicate. If it is molded at one time, if it is coated too thickly, the surface of the coating will be dry but the inside will not be dry, and the water will not evaporate, resulting in soft and thin waterproof layer, which will be broken when touched.
Note:Above the waterproof layer, cement mortar/anti-crack mortar protective layer shall be made. On a smooth cement plane, if the thickness of the waterproof layer is required to be, then approximately per kilogram of area can be paintedAbout square meters. Because the actual construction amount is related to the construction technical level, the flatness of the construction surface, the ambient temperature, the product consistency (water dilution) and other conditions,Need to be flexible depending on the situation.Some wrong operations that are easily overlooked
Some wrong operations that are easily overlooked
The coating thickness of the waterproof layer affects the waterproof age of the building, and the appropriate waterproof coating must be selected. During construction, neither "material reduction" nor blind "material addition!
The better, thickness, waterproof coating, brushing, waterproof layer, construction, waterproof, resulting in, approximately, not less
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