What are the common household waterproof coatings and their characteristics?
In our home decoration, paint is indispensable. There are various paint products on the market, and waterproof paint is one of them. Its good waterproof property is deeply loved by people. What are the waterproof paints? Next, let's take a look.
what are the waterproof coatings
1. k11 universal waterproof coating
k11 universal waterproof coating is a two-component waterproof material. When the two materials are mixed, a chemical reaction occurs, which not only forms a surface coating waterproof, but also penetrates into the interior of the substrate to form crystals to prevent the passage of water, thus achieving a double waterproof effect. Its characteristics: rigid waterproof material, outstanding bonding performance, mainly used for waterproof and moisture-proof treatment of bathrooms and kitchens.
Second, JS waterproof coating
JS waterproof coating, J refers to polymer, S cement; That is, JS is a polymer cement waterproof coating, which has strong adhesion to wet base surface, excellent moisture resistance and high compressive strength. It can combine organic and inorganic materials, complement each other's advantages, combine rigidity with flexibility, improve impermeability, improve compressive ratio, and achieve better waterproof effect. JS is a new and ideal environment-friendly waterproof material that is mainly popularized and applied in China at present, and is mainly used for indoor waterproofing of buildings.
third, acrylic waterproof coating
acrylic ester: pure liquid, ready to use when opened. Water-based, water-soluble, easy to combine with ground cracks, forming a solid waterproof layer, waterproof effect is better than flexible mortar. After brushing, it is necessary to carry out surface treatment such as napping or sanding to increase the friction and make it easy to stick bricks. Because of its good waterproof effect, flexible mortar and acrylate are more suitable for long-term immersion. Acrylic waterproof coating: it has good flexibility and strong adhesion. The elastic waterproof membrane and the base form a complete waterproof system to adapt to various deformation of the structure, so as to achieve long-term waterproof and impermeability. It is especially suitable for roofing waterproof materials and waterproof materials of some micro-deformation structures.
IV. Polyurethane waterproof coating
Polyurethane waterproof coating can be used both indoors and outdoors. After brushing, it is very thick, about 3 mm, and the elastic tension is above 3%, which is very elastic. Any cracking of the substrate will not make it crack, and the waterproof effect is the best. Although the safety performance is controlled in the environmental protection requirements, this kind of waterproof coating has a strong smell, which is difficult for ordinary people to accept, and the environmental protection performance of very few brands is not up to standard. Polyurethane is gelatinous and thick, so it is difficult and complicated to use scraper in construction. After painting, it is necessary to carry out surface treatment, roughening or sanding to increase the friction, which is easy to stick bricks. Polyurethane waterproof coating: divided into one-component and two-component, it is a reactive moisture-cured waterproof coating. When in use, it is coated on the waterproof base and reacts with moisture in the air to solidify and crosslink into a tough, soft and seamless rubber waterproof film, which can be used in waterproof projects such as roofs, internal and external walls, kitchens, bathrooms, non-drinking pools, retaining walls and the like.
One-component polyurethane is characterized by a rubber elastic film with high elasticity, high strength and durability, thus playing a waterproof role.
The characteristics of two-component polyurethane form an elastic seamless whole after curing, which improves the waterproof and impermeability of building engineering. It has the advantages of dense coating, complete waterproof layer, no cracks, no pinholes, no bubbles, low water vapor permeability coefficient, waterproof function and gas barrier function.
Understand the classification of home improvement waterproof materials. Let's take a look at what waterproof coatings are and how to choose and use them.
what is waterproof coating
as we all know, coating is also called paint, which is coated on the surface of protected or decorated objects and can form a continuous film with firm adhesion to the coated objects. Its waterproof coating is a film formed by the volatilization of solvent or moisture or the chemical reaction of two components, which isolates the building surface from water and makes it waterproof and sealed.
The waterproof film formed by curing the waterproof coating has crack resistance, impermeability, weather resistance, extensibility and elastoplasticity, which can play a role in waterproofing, seepage prevention and wall protection.
How to choose waterproof coatings
First, when choosing waterproof materials for home decoration, we should first look at the packaging, whether the packaging color of the products is bright, whether the handwriting is clear, whether the product name, net weight, manufacturer and certificate of conformity are complete. Real environmentally friendly waterproof materials should have the test report, product test report and product certificate issued by the nationally recognized testing center (CMA). Most well-known brands will have their own anti-counterfeiting labels, so pay special attention when purchasing.
2. Whether there is precipitation, stratification and caking of the waterproof materials for home improvement: If there is any such situation, please do not buy them. These products are unqualified and cannot be used after being bought back;
Third, the waterproof material for home decoration has no strong pungent smell: because the waterproof is finished, the brick is pasted. How to choose the toxic material will have a long-term toxic gas source in the home; It will be more troublesome to disassemble and replace it again, so we should pay special attention to it.
fourth, whether the waterproof material in the home is beneficial to the construction: I think everyone will agree with this. If you finish the renovation earlier, you will have less renovation expenses and move into a new home earlier.
finally, I would like to remind you that when purchasing, you should go to the reputable building materials market and choose qualified enterprises for construction. In the process of decoration, the places where water environment often exists should be waterproof.
How to use the waterproof coating
Stirring: First, pour the liquid material into a container, then slowly add the powder, and fully stir for 3-5 minutes until a uniform slurry without raw powder lumps and particles is formed. (It is best to use a stirrer)
Brushing: Brush directly on the base surface with a brush or roller brush, with even strength and no brush leakage; Generally, it needs to be painted twice (depending on the use requirements), and the thickness of each painting should not exceed 1mm; After the previous one is slightly dry, the next one is painted (just not sticky, usually 1-2 hours apart), and the front and back are painted vertically in a cross, with a total thickness of 1-2mm; If the coating is cured, wet it with water before painting another layer.
curing: after 24 hours of construction, it is recommended to cover the coating with wet cloth or spray water to cure the coating.
protection: please take protection against trampling, rain, sun exposure, sharp injury, etc. before the construction is completely dry.
inspection (closed water test): please store water for 48 hours after the waterproof layer is dried (at least 24 hours in summer and at least 48 hours in winter) to check whether the waterproof construction is qualified. Lightweight walls need to be drenched with water.
It is very important to choose waterproof coating, because the main reasons for water seepage and leakage in the bathroom and kitchen at home are the wrong type of waterproof coating and unqualified products. If there is a quality problem in waterproof construction, the bathroom and kitchen will turn into a pool, but the water will leak downstairs, causing serious trouble to family and neighbors.
first, when purchasing waterproof materials for home improvement, we should first look at the packaging, whether the packaging color of the products is bright, whether the handwriting is clear, whether the product name, net weight, manufacturer and certificate of conformity are complete. Real environmentally friendly waterproof materials should have the test report, product test report and product certificate issued by the nationally recognized testing center (CMA). Most well-known brands will have their own anti-counterfeiting labels, so pay special attention when purchasing.
2. Whether there is precipitation, stratification and caking of the waterproof materials for home improvement: If there is any such situation, please do not buy them. These products are unqualified and cannot be used after being bought back;
Third, the waterproof material for home decoration has no strong pungent smell: because the waterproof is finished, the brick is pasted. How to choose the toxic material will have a long-term toxic gas source in the home; It will be more troublesome to disassemble and replace it again, so we should pay special attention to it.
fourth, whether the waterproof material in the home is beneficial to the construction: I think everyone will agree with this. If you finish the renovation earlier, you will have less renovation expenses and move into a new home earlier.
finally, I would like to remind you that when purchasing, you should go to the reputable building materials market and choose qualified enterprises for construction. In the process of decoration, the places where water environment often exists should be waterproof.
How to use the waterproof coating
Stirring: First, pour the liquid material into a container, then slowly add the powder, and fully stir for 3-5 minutes until a uniform slurry without raw powder lumps and particles is formed. (It is best to use a stirrer)
Brushing: Brush directly on the base surface with a brush or roller brush, with even strength and no brush leakage; Generally, it needs to be painted twice (depending on the use requirements), and the thickness of each painting should not exceed 1mm; After the previous one is slightly dry, the next one is painted (just not sticky, usually 1-2 hours apart), and the front and back are painted vertically in a cross, with a total thickness of 1-2mm; If the coating is cured, wet it with water before painting another layer.
curing: after 24 hours of construction, it is recommended to cover the coating with wet cloth or spray water to cure the coating.
protection: please take protection against trampling, rain, sun exposure, sharp injury, etc. before the construction is completely dry.
inspection (closed water test): please store water for 48 hours after the waterproof layer is dried (at least 24 hours in summer and at least 48 hours in winter) to check whether the waterproof construction is qualified. Lightweight walls need to be drenched with water.
It is very important to choose waterproof coating, because the main reasons for water seepage and leakage in the bathroom and kitchen at home are the wrong type of waterproof coating and unqualified products. If there is a quality problem in waterproof construction, the bathroom and kitchen will turn into a pool, but the water will leak downstairs, causing serious trouble to family and neighbors.