What are the misunderstandings of waterproof coati

2022-07-22
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In home decoration, waterproof coating is essential. Because it can form an integral seamless sealing layer, waterproof coating is complete, which can completely isolate air and water, and completely isolate the invasion of external rain, moisture and all harmful gases on the waterproof base; The construction technology of waterproof coating is easy to hold, and the construction equipment is simple. It can be made into a continuous and integral waterproof layer without being limited by any complex shape of the base. Most waterproof coatings also penetrate into the closed pores of the base to strengthen the building

waterproof coating is essential in home decoration. Because it can form an integral seamless sealing layer, waterproof coating is complete, which can completely isolate air and water, and completely isolate the invasion of external rain, moisture and all harmful gases on the waterproof base; The construction technology of waterproof coating is easy to hold, and the construction equipment is simple. It can be made into a continuous and integral waterproof layer without being limited by any complex shape of the base. Most waterproof coatings also penetrate into the closed pores of the base to strengthen the building. The following editor will introduce what waterproof coatings are and the misunderstanding of waterproof coating purchase

what are the waterproof coatings

1. The hard mortar coating

does not need to be treated after brushing. It can be directly tiled, which is convenient for construction. It is mostly used for hard mortar on the back surface of the top surface, also known as rigid mortar: the ratio of lotion to mortar is 1:4. After brushing, there is no need to deal with the coating, and bricks can be directly pasted, which is more convenient. After curing, it will form hard cement blocks, which will not cause water seepage. The waterproof effect of its back water surface is very good, which is its biggest advantage. The disadvantage is that this kind of mortar has high hardness and is easy to crack with the deformation and cracking of the base course. Therefore, it is generally used for waterproofing of the back water surface

2. Flexible mortar coating

even if the base is deformed and cracked, it will not affect the waterproof effect. It is mainly used for the flexible mortar on the wall surface and ground. The ratio of lotion to mortar is 5:4, which is elastic. Even if the base course is deformed and cracked, it will not affect the waterproof effect. It is mainly used on the facing surface of the wall and ground, not on the back surface of the top surface. If the waterproof is not done well, there is water penetration, and it is easy to lift the bag and seep water. Price: 300-500 yuan/barrel, 18 kg per barrel. There is also a kind of silicone waterproof coating in the flexible mortar, which belongs to high-grade flexible mortar. The elastic tension and flexibility are very good, but the price is 600 yuan/barrel, which is relatively expensive and very rare in the market. Acrylate: pure liquid, ready to use when opening the cover. It is water-based and can be melted into water. It is easy to combine with the ground gap to form a solid waterproof layer. The waterproof effect is better than that of flexible mortar. After brushing, surface treatment such as roughening or sanding is required to increase friction and make it easy to stick bricks. Due to the good waterproof effect, flexible mortar and acrylate are more suitable for long-term immersion environment

3. One component polyurethane

can be used both indoors and outdoors. After brushing, it is very thick, about 3mm, and the elastic tension is more than 300%. It is very elastic. The cracking of any substrate will not make it crack, and the waterproof effect is the best. Although the safety performance is controlled in the list of environmental protection requirements, the smell of this waterproof coating is large, which is difficult for ordinary people to accept, and the environmental protection performance of a few brands does not meet the standard

4. Polyurethane is gelatinous

very thick. Scraper is required during construction, which is very laborious and complex. After painting, surface treatment, roughening or sanding are required to increase the friction, which is easy to stick bricks. Price: about 500 yuan/barrel, 18 kg per barrel. The drying speed of the coating is affected by the climate. The drying speed is relatively slow in the humid and cold climate, but the climate has no effect on the waterproof effect. Generally, the drying cycle of mortar is 24 hours, and that of acrylate and polyurethane is 24-48 hours

waterproof coating features

1, color. The high-quality JS waterproof coating is dark black after adding cement and drying, and the surface is solid, flat, smooth and free of cracks. High quality JS waterproof paint is transparent after drying without adding human things, and it is inferior in white or other colors

2, precipitation. When buying JS waterproof paint, don't shake it. Open the cover and have a look first. If there is a layer of water quality or water like objects floating on the waterproof lotion, it is precipitation. JS waterproof paint that will precipitate must be fake

3. Viscosity. Some construction personnel believe that the higher the viscosity of JS waterproof coating, the better the waterproof performance. That is a wrong understanding. The viscosity of high-quality JS waterproof coating will not be very high. If you buy JS waterproof coating with Mongolian hands, it is to use glue and white milk as fake JS waterproof coating

4. Quick dry. High quality waterproof coating has the advantage of quick drying, which plays a convenient role in construction. The high-quality JS waterproof coating has a vague sense of familiarity with the weather, and it dries quickly when the humidity is high

5. Dispersing force. When adding cement, high-quality JS waterproof coating should be easy to mix and lubricate, and it will soon be able to integrate evenly with the cement. The cement does not form particles. When brushing on the ground or wall, high-quality JS waterproof coating is easy to brush or swing. After drying, the surface is flat, smooth and does not crack. When mixing with cement, the construction of inferior JS waterproof coating is very laborious and laborious. When brushing or dumping, cement granulation will occur, and the dispersion of cement and waterproof coating is uneven. Some inferior water release coatings will also dry slowly. Generally, counterfeiters use 107 glue as JS waterproof coating

6. Elasticity. The elasticity directly determines the key factor of the quality of JS waterproof coating. Use the JS waterproof paint you bought to do a simple small test according to the proportion in the instructions, and you will know the quality of the waterproof paint you bought at a try. 1 part of waterproof coating + 0.7 parts of ordinary cement or 0.b parts, then mix and apply it evenly on the glass or slippery surface, wait until the waterproof coating is dry (generally dry for 2-3 days, and the surface is dry for 8h), remove the adhesive film formed by the waterproof coating, pull it with both hands, and you can test the elasticity. The elasticity of high-quality JS waterproof coating can be pulled to more than 3 times the length, and the qualified standard is 1 time, that is, the adhesive film of LCM JS waterproof coating will not break when it is pulled to 2cm, It is qualified. The better the elasticity of JS waterproof coating, that is, the longer it is pulled, the better the waterproof performance. Without elasticity, it will not be waterproof

7. The current waterproof coatings include HD, Hb and JS waterproof coatings. You must be careful when buying. Those starting with Hb and HD are common polymer cement waterproof coatings, which have average waterproof life and quality, and are easy to be fake. The polymer cement waterproof coating starting with J5 has not only high elasticity and great astringency, but also excellent impermeability, crack resistance, durability and acid resistance. There is no problem in waterproof, seepage proof and moisture-proof works of indoor walls, external walls, toilets and bathrooms, kitchens, basements, tunnels, roads and pools

misunderstanding of waterproof coating purchase

1. It is believed that waterproof coating has nothing to do with environmental protection

the waterproof project of home decoration is a relatively hidden project. Some families often mistakenly believe that the waterproof project area of bathroom, kitchen and other indoor decoration is not large, and cement and ceramic tiles will be used on it after using waterproof coating, which will not cause pollution. In fact, because of the concealment of the waterproof layer, once the inferior waterproof coating is used, it will pollute the indoor environment for a long time. Therefore, the selection of waterproof paint must not be taken lightly

2. Think that the softer the waterproof coating is, the better.

when people talk about waterproof, subconscious and intuitive perceptual knowledge is mostly limited to the application of flexible materials. It is considered that without flexible materials, waterproofing cannot be done, or the more flexible the waterproofing effect is, the better. However, flexible materials pay attention to the formation of waterproof coating layer, while rigid waterproof is to solve the problem from the inside, and each has its own advantages and characteristics. It is better to combine hardness and softness

3. It is believed that the brighter the color of waterproof coating, the better.

at present, some enterprises in the market have launched waterproof materials with color after construction, and carried out extensive publicity, but we should pay attention to the evaluation of product quality, which should be based on its technical indicators rather than color. Therefore, waterproof coating is not like the brighter the color, the better

4. The same waterproof coating is selected for different parts

different spaces have different performance requirements for waterproof coating, so when selecting waterproof coating, waterproof materials should be used according to different parts, and the right place can be used “ Make the best use of materials and materials ”, In order to achieve the best waterproof effect. On the contrary, improper use of waterproof materials is also very harmful

editor's summary: here are some misunderstandings about waterproof coatings and their purchase, hoping to help you. If you want to know more, you can pay attention to information

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