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How to choose waterproofing membrane?

If you are a developer, whether the property has suffered leakage from the owners of the complaint? If you are an owner, has been plagued by dripping on the top of the toilet? These phenomena are not normal, but because it is too common and be regarded as usual. Developers lose confidence in the waterproof, people buy watertight house on the shouting Fortunately, the case, really makes the call only.
Leakage problem really so difficult to solve? Reporters with questions visited several major brands of waterproofing business experts, has been very firm answer: "Of course not!" Waterproofing is an important part of architectural design, but the design team on waterproof material is not enough attention and lack of expertise , Resulting in unreasonable design, building a large area of leakage is one of the main.
Therefore, experts suggest that a reasonable design of waterproofing works, the second is to choose the appropriate waterproofing membrane. However, a wide variety of waterproof materials, different forms, different performance, price disparities, construction methods are different, therefore, selected waterproof material must meet the engineering requirements.
First of all, according to climatic conditions selected. Real estate development is very strong, but in recent years, many well-known real estate enterprises in the South to enter the North often, the South's waterproofing experience to the north, is bound to acclimatized. As the South rainy, waterproof material and more use of water-resistant waterproof membrane, such as glass fiber, polyester tire modified asphalt membrane or water-resistant adhesive adhesive polymer membrane. The northern cold, especially in the snowy areas, some waterproof membrane can not withstand the low-temperature expansion and contraction of the cycle of shrinkage, premature aging fracture. Therefore, these areas should use SBS modified asphalt membrane or welded joint of the polymer membrane, if the choice of low-temperature resistant waterproof material, should be inverted roof.
Second, the different parts of the building, the requirements of the waterproof material is not the same, but also according to local conditions, according to material construction. In a building, roofing, walls, underground construction and toilet water between the water can be described as critical.
As the roof waterproof layer exposed, sun and rain, wind and rain, so to choose high tensile strength, elongation, good aging waterproof material. Such as polyester tire polymer modified asphalt membrane, EPDM rubber membrane, P-PVC membrane (welded joints), one-component polyurethane coating (plus protective layer).
Wall leakage because now the wall is too thin, mostly for the light brick masonry, a lot of inside and outside through the joints, and then doors and windows Tang and the wall at the junction of the lax, rainwater seepage from the seam. So the wall can not be waterproof membrane, only with paint, but also with the exterior decoration materials. Window Tang installation joints also have sealing paste.
Underground waterproof layer is due to long soak in water or very moist soil, we must use water-resistant good waterproof membrane. Backplane waterproofing application of thick, and have some resistance to the ability of waterproofing barbed material. If the choice of synthetic polymer membrane, the most suitable thermal welding joints. The use of adhesive joints, the glue should be excellent water resistance, otherwise no matter how good the membrane can not be selected. Therefore, the use of waterproof material should be careful.
Toilet water between the membrane can not be selected, only the most appropriate coating, coating and cement-based acrylic paint for the most appropriate, in the above solid paste tile. Because the toilet room to the natural climate from the impact of no temperature changes, the elongation of the material requirements are not high; the second to a small area, Yin and Yang angle more, more pipes through the floor; three to the wall waterproof layer posted tiles , And binder affinity performance.
In addition, the choice of waterproof material is also considered the need for architectural functions. For example, some roof planting flowers and trees, green environment, because the plant root penetration force is very strong, waterproof layer in addition to corrosion resistance to soaking, but also with anti-puncture ability. This situation should be used polyethylene geomembrane (welded joints), polyvinyl chloride membrane (welded joints), pewter alloy membrane, anti-rooting of the modified asphalt membrane.
If the roof for recreational activities and industrial venues, such as dance, ball games, sightseeing, waterproof layer should be laid on the block protection layer. Waterproof materials do not have to be full. The elongation of the membrane requirements are not high, a variety of coatings can be used, but also for rigid-flexible combination of waterproof.
Experts point out that the choice of waterproof material, must be combined with a reasonable design. Some works selected foreign brands of products, expensive, but still there is leakage. Some projects, the choice of materials is the lowest price of inferior products, not the beginning of the leakage phenomenon, a few years after the waterproof effect is difficult to guarantee.
Good or bad for the evaluation of waterproof material, generally have several conditions: First, the physical properties of materials, such as tensile strength, elongation at break, low temperature resistance to high temperature resistance, impermeability and aging resistance indicators are better , Construction and easy operation, etc., than the same type of material is excellent.
Second, a part of the building waterproof good adaptability. Such as roll-sheeting large area roof is very good, with the toilet in the bathroom and wall waterproofing, it becomes powerless, the use of paint will be handy. Area is small, more convex surface is the coating of the utility. Another example is the rigid concrete waterproof, the most suitable for the basement wall and floor, if the long-span roof with rigid waterproof, not only impossible, but also that the design is unreasonable.
Third, give full play to the characteristics of the material properties. Such as high-density polyethylene geomembrane, anti-puncture rolling rolling high strength, but the flexibility is poor, good for planting roof, if used in the complex shape of the roof, do nothing. Choose waterproof materials play a long material, to avoid its short, play the elderly is a good material.

 
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