Building waterproofing | Precious Tiling and Waterproofing

Waterproofing is a method that is used to protect a concrete surface from water penetration. The process includes waterproofing materials in order to function as a barrier to make the building surfaces water resistant during construction. 

Waterproofing is necessary for walls, balconies, decks, bathrooms, kitchens, and others, preventing unwanted moisture that may seep into your walls and cause mould. 

Waterproofing Methods

  • Cementitious Waterproofing
  • Liquid Waterproofing Membrane
  • Bituminous Coating
  • Bituminous Membrane
  • Polyurethane Liquid Membrane

Cementitious Waterproofing

This waterproofing procedure is the most simple and straightforward method of waterproofing in construction; since the materials are easily accessible from the suppliers of masonry products. Also, the materials are pretty easy to mix and apply, and the technique is usually used for the interior wet areas, such as toilets.

Moreover, this type of method is often rigid or semi-flexible, which leads its application to restricted areas such as waterproof deck coating for bridges, dams, sewage, or tunnels. As the cementitious waterproofing method is not exposed to weathering and sunlight, it does not go through the contract and expansion process.

Liquid Waterproofing Membrane

The liquid membrane is a thin type of coating that usually includes a primer coat and a couple of topcoats. The application of the coating can be done by either using a spray, a roller, or a trowel. This type of coating is thin but offers more flexibility than the cementitious method of waterproofing.

The reason for its flexibility is because of the rubbery coating it turns to appear on your wall when the liquid cures. As it happens, the elongation or stretching properties of the coating can attain as high as 280% if the right amount of thickness is applied. 

However, the durability and longevity of the waterproofing membrane coating depend on the kind of polymer the manufacturer uses during the making of the liquid waterproofing.

Bituminous Coating

Another method of waterproofing is through bituminous coating, which is also known as asphalt coating. This particular coating is made of bitumen-based materials and is an excellent waterproofing agent in concrete foundations.

Its flexibility and protective coating are in compliance with its formulation and polymerization grade. Thus, its polymer grade and reinforced fibre properties also offer flexibility and protection against water.

Since this type of coating is not suitable for sunlight exposure, it eventually becomes fragile and brittle. However, in order to avoid this, one can still modify the coating by adding more flexible materials, such as polyurethane or acrylic-based polymers.

Applications of Bituminous Coating:

  • Areas beneath the wet screed 

Bituminous Membrane Waterproofing Method

This type of membrane is self-adhesive because of the composition of filler, asphalt, and polymers, which also makes this method a popular one due to its performance. In addition, certain resins and oils can also be added to improve the adhesive attributes. 

This one has both covered and exposed types of torch on the membrane where the exposed membrane has the ability to withstand any wear and tear of the weathering process. This is due to the granular mineral aggregate. 

At the same time, for the other types of the membrane to prevent puncture, the contractor needs to apply one protective screed.

Applications of Bituminous Membrane:

  • Low-sloped roofs 

Polyurethane Liquid Membrane

Polyurethane Liquid Membrane can offer more flexibility which also makes it more expensive than the other methods. Usually, this method of waterproofing is used on flat roof areas and those areas that are exposed to weathering.

One should know that polyurethane is pretty sensitive to moisture content. Therefore, if you apply this method, then you need to be careful in evaluating the concrete slab for moisture content.

We hope that this article has helped you in understanding some of the waterproofing methods. If you have any other queries regarding tiling or waterproofing, you can reach out to us. 



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