Waterproofing a surface is the process of formation of a barrier over home structure surfaces like foundations, roofs, walls etc. in order to prevent water seepage and penetration. There are different waterproofing methods applicable depending on the surface it is being applied to. Most common waterproofing methods are using bituminous materials, cementitious materials and polyurethane etc.
Waterproofing Methods
- Cementitious Waterproofing
- Liquid Waterproofing Membrane
- Bituminous Coating
- Polyurethane Liquid Membrane
1. Cementitious Waterproofing
This is one of the easiest and more common methods of waterproofing methods best for wet areas like toilets and kitchens etc. The use of this method is behind tiles and over concrete surfaces. Due to its cementitious nature it effectively prevents water penetrations, resist mould and mildew and has a strong bonding strength. The best part is that cementitious water proofing materials are easily available with masonry products suppliers.
In addition to residential, cementitious waterproofing method also has commercial applications. It is very commonly used in Dams, bridges, subways, water treatment facilities, sewage treatment plants, Marine Cargo Port and Docks, Parking lots etc.
2. Liquid Waterproofing Membrane
Liquid Waterproofing membrane or Liquid applied membrane is a liquid based, fully-bonded coating best for many different waterproofing applications. It consists of a thin liquid layer but offers more flexibility. When applied on a surface it forms a rubber like waterproof membrane that is durable, has excellent adhesion and fills in cracks and gaps very effectively. The application is fast, safe and easy and is suitable for a number of different surfaces and applications. If applied on roofs it delivers great results for lowering roof temperature during high heat summers in Dubai.
Polyurethane and Acrylic emulsions are more popular and effective in hot climate regions due to their excellent UV stability, ease of application and low hazardous content.
3. Bituminous Coating Waterproofing
Bitumen, also known as asphalt is a naturally occurring petroleum hydrocarbon mineral. Over 70% of this liquid to semi-solid petroleum hydrocarbon is used in roads and highways construction used as a binder to create asphalt concrete. The remainder is mostly used for sealing, insulating & waterproofing. Bituminous waterproofing methods has proved to be an excellent waterproofing and protective coating agent on concrete surfaces. In its naturally occurring state it is not suitable for exposure to sunlight and high heat regions. However when modified with addition of polyurethane or acrylic based polymers it becomes more durable and effective.
4. Polyurethane Liquid Membrane Waterproofing Methods
Polyurethane is a one of the more popular choices due to its ease of installation. It requires less skills and can be used for post-construction application. It is usually used for flat roof areas that are exposed to direct sunlight and weathering. This solution can be expensive but is long lasting and offer significantly more efficiency, delivering higher value than the price.
Polyurethane Liquid Membrane waterproofing methods has become more popular due its higher flexibility, cracks filling, strong adhesion, seamless finish and weather resistance. The only con is its sensitivity to moisture content. Therefore the before application, the surface needs to be prepared to eliminate any moisture content. Due to its high resistance to standing water after cure, it can be applied on may different surfaces like, flat roofs, Balconies, Patio and Water tanks etc.
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