In waterproof engineering works, there are no more than two kinds of waterproofing materials, one is waterproof coiled membrane and the other is waterproof coating. Due to different raw materials, the characteristics, construction technology and application environment of waterproof coating and waterproof coiled membrane are also different. Which is better, waterproof coating or waterproof coiled membrane? It can only be said that the two have their own advantages and disadvantages. When choosing, the basic principle is to choose according to your own needs.
I.The advantages of waterproof coating
1.It can ignore the complex problems of the base surface and can be made into a continuous and integral waterproof layer;
2.The working equipment is simple and the construction technology is easy to master for most workers;
3.Suitable for large area construction, short construction period and low construction intensity to save cost;
4.The coating waterproof layer and the base course have 100% bonding surface (except that the reinforced layer empty paving method is used for cracks, nodes and other parts);
5.Most of the water leakage of the coating waterproof layer within the service life is that because the crack width of the base course exceeds the extensible range of the waterproof coating. The cause of water leakage and the parts forming water leakage are very easy to find. The warranty and restoration and repair is very convenient. Only a small amount of waterproof coating materials can repair the cracks and damaged parts;
6.High quality waterproof coating can successfully waterproof the back water surface. Some waterproof coatings can be constructed on the wet base and form a waterproof layer.
II.The disadvantages of waterproof coating
1.Some waterproof coatings need a certain time of physical and chemical reaction to form a waterproof layer after consolidation;
2.The completion of a waterproof layer of waterproof coating needs to be painted several times, and each painting must have a certain interval, so the final completion of the waterproof layer takes a long time;
3.In the construction process of waterproof coating, on-site management is very important. Jerry built and shoddy products will have an opportunity in case of neglect of management;
4. The thickness of the coating waterproof layer is determined according to the coating times during construction. In addition to the coating times, the solid content of the coating itself is the decisive factor of the film-forming thickness.
III. The advantages of waterproof coiled membrane
1. No maintenance is required once the waterproof coiled membrane is properly applied and formed;
2. The construction thickness is easy to calculate according to the design, and the calculation of material consumption is accurate;
3. The construction site is easy to manage and is not easy to cut corners;
4. Uniform in the layer thickness as designed;
5. Empty paving can effectively overcome the stress of the base course.
IV. The disadvantages of waterproof coiled membrane
1. The waterproof coiled membrane can only be spliced to deal with the complex base layer, which is difficult to overlap with each other, the waterproof quality of the interface can not be guaranteed, and there are great hidden dangers of water leakage;
2. If any part of the waterproof coiled membrane is damaged, degummed or leaked (even if there is only one), the waterproof function of the whole coherent layer will be lost. If the damaged and defective parts cannot be found, local repair is impossible, so only redo the waterproof;
3. The construction intensity of waterproof coiled material is high, and the requirements for the actual construction ability of constructors are high;
It can be seen that waterproof coiled membrane materials and waterproof coatings both have their own strengths and weaknesses. The shortcomings of waterproof coatings can be gradually solved with the progress of technology and the selection of materials; Waterproof coiled membrane material has been constantly updated and iterated over the years. With the emergence of green building roof system, the development space of coiled membrane material is becoming larger and larger.
Post time: Aug-20-2021