Types of Waterproof Materials and Selection Guide: Choosing the Best Waterproof Coating for Each Area
Waterproof material types and selection guide: Choose the right waterproof coating according to the site
Taiwan's climate is hot and humid, and it is often hit by plum rains and typhoons. If a building lacks a complete waterproofing system, it may suffer from leakage, wall cancer and other problems over the long term. Therefore, choosing suitable waterproof materials can effectively protect buildings from water vapor erosion.
There are many types of waterproof materials on the market. How to choose the right waterproof coating? In addition to considering the construction site and waterproofing requirements, it is also necessary to understand the characteristics and applicable scope of various materials. The following will introduce different types of waterproof materials - sandwich type, surface type, and permeable waterproof materials...etc., to help you choose the most suitable waterproof solution.
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Sandwich waterproof material: waterproof barrier hidden in the inner layer
The characteristic of sandwich waterproof materials is that they will not be directly exposed to the outside after construction, but will be sandwiched between building materials to prevent water vapor penetration. This type of material is usually used in waterproofing projects that require the addition of tiles, stones or other decorative layers. For example, elastic cement is a common sandwich waterproofing material, which is usually covered with other finishes after drying to provide hidden waterproof protection.
Scope of application:
✔️ Areas that need to be re-tiled, such as bathrooms and kitchens
✔️ Indoor waterproofing projects, such as floor or wall waterproofing layers
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Surface waterproof coating: surface-applied waterproof protection
Surface waterproofing materials are directly applied to the surface of building materials to form a waterproof layer that can effectively isolate water vapor from penetrating. For example, waterproof topcoat, transparent waterproof coating, etc. belong to this type. This type of waterproof coating is usually the last step in the construction process. After drying, it is usually not covered with other decorative materials. And because it is applied on the surface, future maintenance and repairs are relatively easy.
Scope of application:
✔️ Terraces, balconies, roofs and other places that need to resist rain for a long time
✔️ Waterproofing of exposed surfaces such as tiles, cement, and gravel
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Penetrating waterproof materials: waterproof mechanisms that penetrate deep into building materials
The principle of permeable waterproof materials is to penetrate into the interior of building materials, react chemically with cement or water vapor, form crystals or gels, and fill the pores and gaps in the building materials, thereby enhancing the waterproof effect. Since this type of material does not form a surface film layer, there will be no problem of film shedding, and it is very suitable for use in negative water pressure environments (such as basements and foundation structures). For example, silicate waterproofing materials belong to this type.
Scope of application:
✔️ Basements, pools, exterior walls and other building areas that require long-term waterproofing
✔️ Negative water pressure environments, such as underground buildings or wet areas
Waterproof coating comparison table: How to choose Hua tasi waterproof coating?
The following is a comparison of various waterproof coatings. Choose the most suitable waterproof material according to your needs!
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Waterproof material type |
Advantages |
Applicable Locations |
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Sandwich waterproof material |
✔️ Easy to construct, strong adhesion with cement After construction, it can be directly applied to soft bottom bonding tiles, pebbles and other subsequent operations. It does not hydrolyze, has good tensile resistance and toughness. |
It is used for waterproofing projects such as roofs, balconies, flower beds, exterior walls, window frames, secondary joints, bathrooms, balconies, sinks, reservoirs, swimming pools, multi-layer wall guide ditch waterproofing, sloping roof waterproofing, basement exterior walls, atrium gardens, etc. |
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✔️ Local reinforcement High ductility, good resistance to strong impact, not easy to foam, high resistance to hydrolysis, and good stretchability |
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Surface waterproof material |
✔️When the substrate is intact, the coating can be applied directly without shaving the tiles. Highly weather-resistant, can withstand sunlight and ultraviolet radiation, and also has heat-insulating and waterproof effects |
Suitable for roofs, exterior walls and floors |
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Waterproofing Additives |
✔️Prevent whitening in advance and reduce construction procedures A liquid additive waterproof coating that is directly mixed with cement or mortar to become a solid base structure for wall waterproofing and strengthen the integrity of the waterproof layer. |
The construction operation is not affected and can be used in cement polishing primer, cement mortar additives, tile adhesives, tile caulking materials, stone washing, stone maintenance... Various building materials are added in proportion and mixed as water to achieve waterproof effect. |
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Permeable waterproof material |
✔️Pre- and post-cancer treatment The film layer is not easy to fall off, does not turn yellow, can be decorated with hand trowels, and is easy to apply, just like the technique of plastering. |
It is applicable to outdoor exterior walls, indoor interior walls, stone paving, stone washing, top floors, roofs, cement base surfaces; as well as water tanks, water towers, interior wall waterproofing, basement interior walls and other environments under positive and negative water pressure. |
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Epoxy resin coating |
✔️Strong adhesion and corrosion resistance Able to withstand heavy loads, suitable for special environments, maintenance frequency depends on usage |
Parking lot floors, factory floors, clean room floors, pools and other special environments |
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Because there are many types of waterproof coatings and their performance is improving day by day, it still depends on the model and function of the waterproof material you purchase! The contents of the table are for your reference. After reading the above introduction, do you still want to browse [More Waterproof Materials]?
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