Which kind of waterproof coating for exterior wall

2022-07-22
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Nowadays, many people will not be unfamiliar with the mention of external wall waterproofing in the decoration of home. The external wall waterproofing project occupies an important position in the whole building. The external wall waterproofing coating can prevent the leakage and erosion of rainwater, domestic water, groundwater and other water sources, and ensure that the building structure and interior are not troubled by water stains. The external wall decoration is directly exposed to nature and is corroded by wind, rain and sunlight for a long time, It is required that the exterior wall waterproof coating has the characteristics of water resistance, pollution resistance, aging resistance, color retention, strong adsorption, good frost resistance, etc., but many people do not know much about the types and functions of the exterior wall waterproof coating. What kind of exterior wall waterproof coating is good? The following is the specific introduction of the waterproof coating for the external wall of Xiaobian. I hope it can be used for reference in the selection of waterproof coating for the external wall

nowadays, many people will not be unfamiliar with the mention of exterior wall waterproofing in the decoration of homes. The exterior wall waterproofing project plays an important role in the whole building. The exterior wall waterproof coating can prevent the leakage and erosion of rainwater, domestic water, groundwater and other water sources, and ensure that the building structure and interior are not troubled by water stains. The exterior wall decoration is directly exposed to nature and is corroded by wind, rain and sunlight for a long time, It is required that the exterior wall waterproof coating has the characteristics of water resistance, pollution resistance, aging resistance, color retention, strong adsorption, good frost resistance, etc., but many people do not know much about the types and functions of the exterior wall waterproof coating. What kind of exterior wall waterproof coating is good? The following is the specific introduction of the waterproof coating for the external wall of Xiaobian. I hope it can be used for reference in the selection of waterproof coating for the external wall

how to waterproof the external wall

1. The continuous pouring part and cold connection

the continuous pouring part and cold connection of each layer cannot expect the binding effect between the concrete. If it is subjected to small earthquakes and the shrinkage of the concrete, the joint part will be cut off, forming a situation that is easy to produce rain leakage

2. Cracks in concrete

cast in situ concrete has continuous pouring joints or cold joints in each layer, which is prone to honeycomb or poorly filled parts, forming congenital shrinkage cracks. In particular, it is more common for walls with large spans or continuous waist walls protruding outward from the wall structure

3. The area around the opening

is not limited to the concrete structure, and the area around the opening is where weaknesses are easy to form in waterproof construction. In the case of pouring concrete or using the tile formwork pre pasting method, just pay attention to the windowsill. However, in the case of painting decoration or tiling, there will be cement floats or debris, voids, horizontal or reverse slope at the top of the concrete around the window, which will form a part full of defects

exterior wall waterproofing - types

with the progress of society and the continuous development of science and technology, there are many kinds of exterior wall waterproofing coatings, which can be divided into silicone self-cleaning and water-resistant exterior wall coatings, strong acid and alkali resistant exterior wall coatings, pure acrylic elastic exterior wall coatings, toughened waterproof putty powder, organic silicon self-cleaning elastic exterior wall coatings, fluorocarbon coatings, advanced acrylic exterior wall coatings, exterior wall youba, special primer for ceramic tiles, environmental friendly exterior wall emulsion paint Exterior wall coatings with different functions, such as ceramic tile finish, acrylic oil finish, high weather resistance and hydrophobic surface paint, metallic paint, etc

exterior wall waterproofing JS waterproof coating

JS waterproof coating in exterior wall waterproofing is a kind of green environmental protection material, which has the advantages of environmental protection, stable performance, long waterproof life, good aging resistance, convenient construction, simple operation, strong adhesion and so on. JS waterproof coating is mostly white in basic color, with obvious heat reflection function. Compared with traditional black roof, it can play a better heat insulation effect and be modulated into color, It can play a decorative and beautifying effect on the roof and exterior wall, and its comprehensive performance is relatively superior. It is a new ideal environmental protection waterproof material that is currently promoted by the state

exterior wall waterproofing - polyurethane waterproof coating

the polyurethane waterproof coating in exterior wall waterproofing is a kind of internal and external coating, with a thickness of about 3mm and an elasticity of more than 300%. In use, any substrate will not crack, and the waterproof effect is excellent, but it also has its shortcomings. The polyurethane waterproof coating has a strong smell, which is difficult for ordinary people to accept. It requires the use of scraper during construction, which is very laborious and complex to operate, It is a reactive wet curing film-forming waterproof coating. It can be used in roof, exterior wall, non drinking water pool, retaining wall and other waterproof projects

exterior wall waterproof-k11 general-purpose waterproof coating

the most common among exterior wall waterproof coatings is K11 general-purpose waterproof coating, which is a composite waterproof slurry mixed with polymer lotion and inorganic powder. It is a two-component waterproof material. It is made of high-quality cement and fine selected quartz sand by polymerization with specific polymers, which can not only form surface coating waterproof, but also penetrate into the interior of the substrate to form crystals to block the passage of water, Achieve double waterproof effect. It is characterized by rigid waterproof materials, highlighting the bonding performance

exterior wall waterproofing - acrylic waterproof coating

the acrylic waterproof coating in exterior wall waterproofing is a one component water emulsion waterproof coating prepared by using international advanced technology and raw materials, using pure acrylic polymer as the base material and adding additives. It presents a pure liquid state and can be used after opening the cover. It can be easily combined with the ground gap to form a solid waterproof layer. After brushing, it needs to be roughened or sanded, So as to increase its friction, easy to tile, especially suitable for use as a wall waterproof material

how to choose and buy environmental protection waterproof coatings when waterproof decoration of exterior walls

first of all, we need to understand the types and properties of waterproof coatings; At present, there are two main types of waterproof coatings on the market: one is polyurethane waterproof coating, and the other is polymer cement-based waterproof coating

there are also two categories of polyurethane waterproof coatings. One is made of polyurethane and coal tar as raw materials. The tar gas volatilized by polyurethane is toxic and difficult to remove, so it was banned in China in 2000. Another kind is still on sale, which uses asphalt instead of coal tar as raw material. However, when using this paint, it is usually diluted with organic solvents such as toluene and xylene, which also contains toxicity

polymer cement-based waterproof coating is composed of lotion synthesized by a variety of aqueous polymers and high-quality cement mixed with various additives. The flexibility of polymer (resin) is integrated with the rigidity of cement, which makes it excellent in impermeability and stability

the market protagonist of natural waterproof coating has been polymer cement-based waterproof coating

whether the waterproof coating is environmentally friendly needs to be further identified. If you master three main points, you can do a good job in shopping:

first, it depends on whether the coating meets the national mandatory standards and whether there is a certification certificate issued by the China environmental label

second, we should clearly see the quality qualification test report of the product, especially the VOC content in the quality inspection report

third, pay attention to the brand when buying, and it is best to choose products produced by well-known large enterprises

editor's summary: the above information is about which kind of waterproof coating for exterior walls is good. It is for reference only. I hope it will be helpful to you. If you want to know more about it, you can pay attention to the information

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