Basic Waterproofing and Leak Repair Knowledge:
1. Characteristics of Water: Water is pervasive and seeps into the building's interior through forces such as wind pressure, convection, impact, adhesion, and capillary action. It does so gradually and is often not detectable on the surface during the渗透 process. In other words, to find the cause of water leakage, an in-depth "internal" analysis and judgment are necessary to address the issue effectively. [1]
2. Pressure Changes: Once water penetrates into a building, within a confined space, when exposed to the sun, it generates heat and transforms into steam. This steam creates a significant amount of pressure capable of destroying the existing waterproofing layer, and even the surface finishes and decorative materials (such as peeling paint, blackening wallpaper, bulging tiles, and swelling wooden floors). In other words, if one unit of water turns into steam entirely, within the limited space of a building, it generates a pressure 1,240 times greater. The destructive power of this pressure is truly terrifying. (This is why we often see waterproofing being applied to foamed concrete containing water, which then swells and peels off shortly thereafter.)
3. Basic Requirements: The interface connecting with the waterproofing material must not have blisters, sanding, honeycomb, wood, paper屑, mud, small stones, and should not be applied on a loose and unstable surface. This is due to poor adhesion, compounded by the destructive effects of ultraviolet rays from the sun, the natural expansion and contraction of the building material, and the pressure from steam vapor, which can easily lead to aging and failure of the waterproofing layer.
5. On the positive side: For roof waterproofing, it should be directly applied to the roof surface. Wall waterproofing should be done directly on the exterior wall, and leakage in water tanks should be addressed on the inner layer of the tank. Water under pressure can spread elsewhere, making it difficult to carry out work in the dead corners of the house. The "positive" here is a relative comparison, not absolute. With the advancement of technology, there are now waterproofing materials for backside application on the market, as well as the use of high and low-pressure injection of synthetic resins to create expanded crystalline structures for waterproofing. However, not all situations are suitable for successful application, so unless absolutely necessary, positive waterproofing should be used.
Fencing can easily fail; waterproofing should be addressed at its root. Fencing methods allow water to渗透 every crack, and it can also create pressure that leads to destruction. How can it last if the root cause isn't treated? For instance, if there's a leak on the top floor, it's exactly where an illegal addition was made. Most people would try to create a water-diversion path, but it's likely to fail.
Definition of Leakproof: Regardless of water pressure or the amount of rain for the next few days, or the condition of the roof, the interior paint will not fade or bubble.
6. Concept: You don't necessarily have to spend money to achieve waterproofing; concrete itself has waterproofing properties, besides undergoing "deterioration." For instance: Houses built in the past, without tile or pebble cladding on the exterior walls, still leaked; and houses in villa areas, despite being treated with expensive imported waterproof coatings, still experienced leakage.
7. Materials are not: Every waterproof material has its own characteristics and suitability. The notion of "a single solution for all problems" is incorrect. Therefore, how to choose the material is the key issue. A good doctor leads in "prescribing medication" rather than being led by the "pharmaceuticals."
Understand the performance characteristics of various materials
In waterproofing and leak repair projects, the oil-water polyester grouting material reacts with water, where the moisture participates in the reaction, diluting and washing away the paste. This is an advantage not possessed by other grouting materials. Under pressure, the cost is injected into the gaps or concrete pores. Penetrating around the gaps, it continues to seep into the concrete cracks, ultimately forming a network structure. It becomes a low-density, water-containing elastic body with good adaptability and excellent water resistance.
Design and hole-punching capabilities for grouting holes are required.
Selecting grouting holes for waterproofing and leak repair projects is based on the actual conditions and requirements. There are two types of hole layouts: saddle and inclined tile. Grouting hole design: The location of the grouting holes should intersect with leak裂缝, and holes should be placed according to the principle of choosing areas with large leaks. The position and number of grouting holes need to be reasonably arranged based on different leakage conditions. To allow for water leakage, holes are placed at solid leakage points. Large cracks and water channels have larger hole spacing, while small gaps have smaller hole spacing.
Grouting in the engineering process is also a crucial aspect to understand.
The connection is the core part of the entire chemical combination in waterproofing and leakage repair, and it must be completed after all preparatory work is done. Before injection, there is an organized division of tasks and permanent positions, especially with dedicated technical staff. The entire system of the waterproofing and leakage repair has been checked for grouting, and grouting equipment can only be added when the filling equipment is operating normally and the pipes are clear. For vertical joints, the joints are generally made from bottom to top, while horizontal joints are made one after another. At one or both ends, for concentrated leaks, it is first necessary to insert holes with a large leakage volume.
In summary, during the waterproofing and leakage repair project, the pressure steadily rises, yet remains under a certain level, which is normal. Occasionally, a drop in pressure may occur, possibly due to the opening of pores and the penetration and sedimentation of manure deep into the cracks. At this point, the joints can be retained according to the requirements of the waterproofing and leakage repair contract. As a large amount of slurry enters the opening, the pressure will gradually increase and stabilize. Another reason for pressure reduction is leakage from seals or pipe joints. It is essential to stop grouting promptly and continue with the treatment. Sometimes, due to the increase in pump pressure, the slurry is hydraulically pushed into the depths of the sedimentation joints, resulting in the loss of a large amount of mud. At this stage, you can adjust the mud's consolidation time to shorten the setting time, or adopt intermittent grouting to reduce mud loss.
What are the reasons for the hollowing phenomenon in waterproof layer tiles?
In waterproofing projects, we all know that an inappropriate choice of waterproof materials directly affects the quality of waterproofing. But what else can be affected by the wrong material selection? It can lead to hollowed tiles in the waterproofing layer. Commonly used waterproof materials in kitchens and bathrooms are waterproof coatings, but in practical engineering, some kitchens and bathrooms use waterproof membranes. Membranes have dense surfaces, low water absorption, strong flexibility, and significant deformation, making them difficult to adhere to. On the other hand, the elastic modulus of tile adhesives is much higher than that of membranes, which is hard to adapt to the high flexibility of membranes, thus increasing the risk of hollow tiles. From this aspect alone, kitchens and bathrooms with decorative tiles are not suitable for waterproof membranes! Some polymer cement waterproof mortars and pastes, to reduce the surface water absorption rate to attract customers, contain an excessive amount of hydrophobic agents, causing the surface of the waterproof coating to become overly hydrophobic, severely affecting the adhesion between the tile adhesive and the waterproofing layer, reducing bond strength, and increasing the risk of hollow tiles. In response, flexible waterproof coatings can be chosen for the floor to adapt to shrinkage and deformation caused by settlement, while more rigid waterproof mortars or pastes can be chosen for walls to adapt to subsequent tile installation. Waterproof materials must be mixed according to the product instructions; additional water or unauthorized alterations of the component ratios are prohibited. These improper operations can affect the waterproofing performance and strength of the layer. If the strength of the waterproof layer is too low, it may result in cohesive failure and hollow tiles. Therefore, we must adhere to the standards and specifications to ensure the quality of waterproofing and prevent hollow tiles from occurring in the waterproofing layer.
In summary, the issue of hollow tiles in waterproofing layers often arises due to non-standard construction practices and material selection during installation, leading to a series of minor details. Therefore, we must be adept at identifying and resolving these problems, truly ensuring standardized construction and the quality of the finished product.
What materials are recommended for waterproofing and leak repair in bathrooms?
During home renovation, waterproofing is akin to the flip side of this story. As a concealed part of home improvement, if the waterproofing is not properly done, leakage may unexpectedly occur, revealing the devilish nature behind the angelic appearance. More distressing is that leakage issues not only bring hardship to family life but also trigger numerous neighborhood disputes. The choice of waterproof coatings has become a crucial aspect of material selection for renovation. Which waterproof coating is the best? What should be paid attention to during the selection process?
Firstly, when selecting, be cautious as there is an abundance of counterfeit goods on the market. Toxic materials that are explicitly banned are also flooding into people's homes through street stalls and guerrilla operations. As such, it is crucial to choose products with high selection criteria, good reputation, strong anti-counterfeiting measures, and international quality system certification. Moreover, these products have been tested and proven effective. Secondly, ensure comprehensive waterproofing: the ground and walls of bathrooms (returns not less than 180CM), kitchen and balcony floors and walls (returns not less than 30CM), all ground and walls of ground floor residential units (returns 30CM), and the thickness of the waterproofing layer must be sufficient: the thickness of the waterproofing layer directly affects its lifespan. Reducing the thickness equals reducing its lifespan, so the thickness should generally not be less than 2MM and must not be less than two cross-coatings. The construction process must be meticulous: special attention must be paid to the joints between walls and floors, pipes, floor drains, corners, and the surrounding areas of sanitary fixtures, as well as the grooves for laying hot and cold pipes. The construction must be detailed. Water-tightness Test: After the waterproofing work is completed, seal the door and floor drain, and fill the room with water for at least 48 hours. Check for any leakage points. If any are found, immediate remedial measures must be taken.
Our service area encompasses the entire Beijing city: Dongcheng District, Xicheng District, Chaoyang District, Fengtai District, Shijingshan District, Haidian District, Shunyi District, Tongzhou District, Daxing District, Fangshan District, Mentougou District, Changping District, Pinggu District, Miyun District, Huairou District, Yanqing District, as well as leak repair in the surrounding areas of Beijing.
Service Scope; Main Business: Waterproofing Projects, Waterproof Walls, Burst and Ruptured Water Pipes
Waterproof coatings, roof waterproofing, waterproof membranes, waterproof sealing, building waterproofing, bathroom waterproofing.
Exterior Waterproofing, Roof Waterproofing, Basement Waterproofing, Bridge Deck Waterproofing, Waterproof Joints, Waterproofing Construction
Roof repair for water leakage, waterproofing for color steel buildings, roof waterproofing repair and sealing with pressure-resistant sealing against rain.
Pipe Leak Sealing and Reinforcement, External Wall Leak Sealing and Grouting, Underground Engineering Leak Sealing, Building Leak Sealing, Tunnel Leak Sealing,
Waterproofing and leak repair, flat roof leak repair, seepage prevention and repair, house leak repair. Concrete structural settlement joints.
Expansion joints, deformation joints, crack joints leak-proof grouting construction. Roofing balcony color steel roof installation
Terrace rooftop waterproofing, rooftop terrace waterproofing layer corrosion and aging; specializing in building repair waterproofing and leak sealing services, undertaking all types of large, medium, and small-scale waterproofing projects
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