The advantages and disadvantages of flexible waterproof materials in practical use are summarized by everyone:
Advantages: It can be used for the construction of waterproof parts with large changes in the structure of prefabricated roofs.
Disadvantage 1: The variety is complex, the performance of each variety and the construction method are very different. It must be constructed by professionals and special tools to meet the quality requirements. Therefore, the construction must be completed while the materials are sold. It is difficult to carry out versatility and universal use. Promotion
Disadvantage 2: The requirements for the waterproof base surface are strict. It must be constructed on a base surface that is completely flat and smooth and has a water content of less than 9%. Otherwise, stratification, drumming and drowning will occur.
Disadvantage 3: Poor plasticity, it is difficult to deal with heterogeneous or narrow waterproof parts, and it is easy to leave gaps and weak points;
Disadvantage 4: The degree of bonding with the cement base is poor. It is easy to delamination and fall off in the wet surface of the base surface and the pressure on the base surface. Especially in the construction of the façade (wall surface), it is necessary to hang the net construction. Otherwise, It is easy to cause the whole wall to fall off;
Disadvantage 5: The formed waterproof layer is thin and weak in strength. The mortar must be used as a protective layer to prevent puncture damage and UV rays. It cannot withstand the corrosion of corrosive substances such as acid, alkali and chlorine in the water, leading to premature leakage. ;
Disadvantage 6: After construction, a layer of mortar must be made to carry out the next process of the next process;
Disadvantages 7: The durability is short, the performance after construction is gradually attenuated and aging is decomposed, and leakage occurs. Maintenance and replacement are required every 3 to 5 years, which is a periodic material;
Disadvantages 8: The comprehensive cost is high, and the construction, materials, storage and transportation costs are very high. To be qualified, the cost per square meter is not less than 60 yuan;
Disadvantage 9: It is easy to burn, it is not uncommon for the welder to ignite at the construction site and cause fires;
Disadvantages 10: Contains toxic volatile gases, long-term volatile benzene, xylene and other harmful carcinogens during construction or after construction.
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