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What Are The Types Of Waterproofing Methods For Buildings?

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    The process of making something impervious to water is referred to as waterproofing. In most cases, waterproofing is applied to buildings, however this treatment can actually be applied to any structure or material. There are a variety of approaches to waterproofing buildings, all of which are determined by the kinds of materials that will be utilised and the amount of labour that will be required for any individual project.

    The development of a barrier that is watertight across the surfaces of foundations, roofs, walls, and other structural parts of buildings is what is referred to as waterproofing in structures. The goal of waterproofing is to prevent water from penetrating these surfaces. Because of this, the exterior surfaces of the building are treated to be water resistant and sometimes even waterproof.

    Materials such as cementitious material, bituminous material, liquid waterproofing membrane, polyurethane liquid membrane, and other similar materials are frequently utilised in the process of waterproofing structures.

    In buildings and other structures, waterproofing is typically necessary for the basement, walls, bathrooms and kitchens, balconies, decks, terraces or roofs, green roofs, water tanks, and swimming pools, among other areas.

    What Is Waterproofing?

    The technique of making a structure water-resistant or impenetrable to the entry of water is referred to as waterproofing when it is used in the context of building construction. Waterproofing is crucial because it helps to keep the interior portions of buildings dry and prevents water from accessing the building in the first place. In addition to this, it aids in lowering the humidity inside the structure, which in turn reduces the amount of damage that is done to things like furniture and similar items.

    Waterproofing is an absolute necessity in regions that are subject to significant levels of annual rainfall and sporadic instances of floods. Particularly in regions with a high groundwater table, it is essential to ensure that basements and foundations are watertight. In the event that there is a high water table, there is a good chance that there will be hydrostatic pressure exerted on the floor and walls of the basement. This can cause the water to press its way through the fractures in the structure, which can lead to structural damage as well as moisture-related issues such as mould, mildew, and decay.

    When the monsoons arrive, all of us will have experienced water seepages in the ceilings and walls of our homes, as well as dampness in the aftermath of flooding. This is because the waterproofing is not very good. It is possible to protect both the structure of your home and the contents that are kept inside of it from the effects of humidity and water exposure through the process of waterproofing your property.

    Why Is Waterproofing Important?

    what are the types of waterproofing methods for buildings 2

    One of the necessary steps in the construction process that must be taken to ensure the durability of a structure is to waterproof it. Nevertheless, it is completely ignored, and rather than being treated as a problem of significance, it is viewed more as an annoyance. Permitting water seepage into your commercial facility poses an unprecedented threat to its overall health and safety.

    In addition to helping to maintain the structural integrity of your commercial building, waterproofing offers a wide range of other advantages. Take a look below for an overview of the primary justifications and advantages.

    For Safety Reasons

    Water and electricity should never be allowed to come into contact with one another. Electrocution and fire represent a significant risk when wiring is not adequately waterproofed and is therefore exposed to the possibility of leakage. Mold and mildew can grow when water gets into a building, which can lead to allergic reactions and respiratory difficulties for the individuals who work there. Water damage can also cause the building to collapse.

    More Energy Efficient

    When a structure is not waterproof, it is much easier for water and moisture to penetrate the structure and make their way inside. This will cause fluctuations in the temperature. The HVAC (heating, ventilation, and air conditioning) systems will have to work harder, consuming more energy, in order to compensate for the change in temperature. As a result, your electricity costs will also increase.

    Increases Lifespan

    The considerable water damage that can be caused by water seepage in a building might compromise the long-term durability of the building materials used in the structure of the building. The process of waterproofing contributes significantly to the exclusion of water, which, in turn, ensures that your commercial space will have the longest possible useful life and increases the level of comfort.

    Retain The Value Of Your Property

    As was just pointed out, if water gets inside your building, it can cause severe damage that will be very expensive to fix. It is possible for the damage done to the structure to drastically reduce the value of your property if it is not discovered early enough to allow for effective repairs to be made. When a waterproofing system is put into place, the possibility of water seepage will be cut down significantly.

    Advantages Of Waterproofing

    • Ensures that the building's structural integrity is maintained.
    • Protects against the growth of mould, mildew, and deterioration
    • Protects both metals and wooden furnishings against deterioration caused by rusting.
    • It stops water from leaking through the ceiling and the walls.
    • Maintains a dry environment inside the structure
    • The value of the property goes up.

    Property Value

    Living areas that are hazardous to one's health and foundations that are inadequate can drastically cut down on the value of a house. The resale value of a building might increase as a result of waterproofing, which is possibly one of the most significant advantages. Houses that do not have waterproofing are almost never considered for purchase by investors or buyers.

    The concern of the expense involved in waterproofing causes many homeowners to continue living in homes with basements that are wet and leaky. However, doing this necessary activity will result in a higher rate of return on your investment. A house that has had its basement waterproofed can accommodate additional liveable space while simultaneously eliminating the risk of imminent structural collapse.

    Waterproofing Methods & Techniques

    Brick Bat Coba Method

    Sometimes RCC slabs will develop fractures, which will allow water to seep through them when it rains. As a result, it is essential to construct roof slabs that are impervious to water and that are capable of delivering an atmosphere that is free from leaks to the inside of the structure. For efficient drainage and the caulking of all cracks and seams, this approach necessitates that the roof surface be sloped. In locations that receive moderate to low rainfall, the flat style of roof with RRC is utilised. It is possible to perform the Coba treatment directly on RCC or stone slabs.

    Brick Bat Coba

    • Before laying the first course, the surface of the roof slab needs to be thoroughly cleaned and then rinsed with water.
    • By combining cement with between one and two percent of super seal powder, a new slurry can be made (acrylic-based acrylonitrile chemical)
    • The dry ingredients for the slurry are first combined, and then water is gradually added until the mixture has an even consistency.
    • On the surface of the roof that has been cleaned, this freshly made slurry is spread in order to form a smooth, thin coating.
    • When preparing cement sand mortar, add 1-2 percent super seal powder to a 1:5 cement sand dry mix. This will prepare the mortar (1 part cement, 5 part sand)
    • To create a plastic mortar, water is added to the mixture.
    • To get a cement mortar layer that is 20 millimetres in thickness, this cement mortar is poured on top of the thin slurry layer.
    • Brickbats are placed in a cement mortar layer that is 20 mm thick to produce a subsequent brickbat layer that is between 100 and 150 mm thick.
    • After that, the cement-sand mortar is put to use for grouting the brickbat layer that was placed down earlier. Each and every gap and joint has been filled. Make sure the surface of the slope over the brickbat layer is smooth.
    • On top of the brickbat layer that has been grouted, freshly produced mortar made of plastic cement and sand is spread.
    • In order to prevent surface cracks, the grouted surface is allowed to cure for two to three days.
    • Another batch of cement and sand mortar containing 1-2 percent super seal powder is mixed together (1 part cement to 5 parts sand). Water is added step by step until the finished product has the desired consistency.
    • On top of the layer of brickbat mortar, a layer of this mortar that is 20 millimetres thick is applied.
    • When finishing, a trowel is typically used. String or a trowel can be used to make square lines on the ground. This is done to prevent the surface from breaking as a result of the material expanding or contracting in reaction to changes in temperature.
    • The curing process will continue for another two weeks.

    Types Of Waterproofing Methods For Buildings

    The following strategies for waterproofing are frequently utilised in the construction industry:

    • Waterproofing Using Cementitious Materials
    • Liquid Waterproofing Membrane
    • Bituminous Membrane
    • Coating Made of Bitumen
    • Polyurethane Liquid Membrane

    Cementitious Waterproofing Method

    Utilising cement as a building's waterproofing material is widely considered to be one of the most effective methods. A masonry products company should be able to provide easy access to the necessary supplies for purchase. In addition to that, they are simple to combine and put on.

    This is typically the best choice for locations that see a high concentration of moisture, such as in and around bathrooms and showers. Because it is not susceptible to expansion or contraction as a result of shifts in its surrounding environment, this solution is extremely resilient and should be put into place on the inside of a structure for the greatest results. In spite of this, it is absolutely necessary to apply an additional safety coating that is resistant to UV rays, as cementitious waterproofing is not resistant to UV rays.

    Cementitious waterproofing is the most straightforward approach to this building industry challenge. Cementitious waterproofing utilises ingredients that are not only readily available from vendors of masonry supplies but also simple to mix and apply once they have been prepared.

    This strategy is typically implemented in interior moist places such as restrooms and showers. This sort of waterproofing is often either rigid or semi-flexible in its application. However, due to the fact that it is utilised in inside spaces such as restrooms, it is not subjected to the effects of sunshine and deterioration. Cementitious waterproofing does not go through a process of contracting and expanding like other types of waterproofing do.

    Applications Of Cementitious Waterproofing

    The following categories of structures frequently make use of cementitious waterproofing:

    • Treatment Facilities for Water
    • Wastewater Treatment Facilities
    • Bridges
    • Dams
    • The Railway and Subway Networks
    • Marine Freight Docks and Port Facilities
    • River Locks and Channels, as well as Concrete Dike Systems
    • Parking Garages and Surface Lots
    • Tunnels

    Liquid Waterproofing Membrane Method

    A liquid waterproofing treatment typically consists of three layers of coating, each of which offers an additional level of protection in conjunction with highly adaptable membranes. Especially when it comes to applications that take place outside, this approach demonstrates greater use than cementitious waterproofing does.

    Because of this, the lifespan of the materials that it is used on can be significantly increased as a result. When it comes to waterproofing your building, you have a wide number of alternatives available to you thanks to the adaptability of this sort of coating, which enables it to be sprayed or rolled over a wide variety of surfaces.

    A liquid membrane is a thin covering that is typically made up of a priming coat and two coatings of topcoats that are applied using a spray, roller, or trowel. These three methods are used to apply the coating. In comparison to the cementitious kinds of waterproofing, it provides greater flexibility.

    When the liquid dries, it forms a coating on the wall that is similar to rubber. The coating has elongation capabilities that can reach up to 280 percent at its highest point. The type of polymer that is utilised in the production of the liquid waterproofing by the producer is directly correlated to the durability of the waterproofing coating.

    A polymer-modified asphalt liquid membrane that has been sprayed on can be an example of a liquid membrane that can be used as a liquid waterproofing barrier. There are also polyurethane liquid membranes available from various manufacturers in a variety of grades, which can be applied using a trowel, roller, or spray.

    Bituminous Coating Waterproofing Method

    The use of a bituminous coating is yet another common method for waterproofing a structure. Many people refer to this kind of coating as an asphalt coating instead. It is flexible, like the liquid membrane, but it employs a different formulation, which makes it better for adhering to particular materials. Similar to the liquid membrane. This technique is frequently utilised when working with concrete foundations.

    The coating will become fragile and brittle after prolonged exposure to sunshine because of the drying effect of the sun. It is mandatory to use a modified version of this coating if you plan to use it on areas that are regularly unprotected from sunlight. The modified version can be mixed with polyurethane or acrylic acid-based polymers, both of which are very flexible, and it is important to keep this in mind if you intend to use it on such areas.

    Because of its formulation and polymerisation grade, bituminous coating can be utilised for waterproofing as well as a flexible protective coat. The polymer grade and the type of fibre that is used for reinforcement can have an effect on the degree to which it is flexible and protects against water.

    The term "bituminous coating" refers to the same thing as "asphalt coating." The use of bituminous coatings in places where the screed is already wet is one of the most typical uses. Particularly useful as a protective coating and a waterproofing agent for surfaces like concrete foundations, it can be obtained in a variety of colours.

    Because it is composed of elements that are based on bitumen, bituminous coating should not be exposed to direct sunlight. In addition, if it is not treated with a material that is more flexible, such as polyurethane or acrylic-based polymers, it will become extremely brittle and weak when left in the sunshine for an extended period of time.

    The amount of solid polymer that is added to the bitumen is one of the most important factors that determines how flexible the finished products will be.

    Bituminous Membrane Waterproofing Method

    what are the types of waterproofing methods for buildings

    It is a form of waterproofing membrane that adheres to itself and has typically been employed on flat or low-sloped roofs. They are materials that adhere to themselves, and examples include polymer, asphalt, and fillers. The adhesive quality can be improved by using a different combination of resins and oil.

    Since the bituminous membrane, much like cementitious waterproofing, is not resistant to UV rays, it is essential to apply a safety creed on top of it before it is put into place. In the absence of proper maintenance, cracks may appear within a couple of years following the application, resulting in expensive repairs.

    Because of its time-tested effectiveness, bituminous membrane waterproofing is a technology that is frequently employed for low-slope roofs. The torch and the self-adhesive membrane that are included on bituminous waterproofing membranes are both integral parts of the membrane.

    Asphalt, polymers, and filler are the three main components of self-adhesive compounds; in order to optimise their adhesion qualities, additional resins and oils can be added. The self-adhesive variety, on the other hand, has a short shelf life because the bonding characteristics of the membrane become less effective over time.

    There is an exposed type and a covered form of torch-on membrane. Contractors need to apply one protective screed to exposed membranes in order to prevent the membrane from being punctured. Exposed membranes often have granular mineral aggregate in order to survive the wear and strain caused by the elements and the various types of membranes.

    Polyurethane Liquid Membrane Waterproofing Method

    In order to keep water out of the space that has a flat roof and is open to the elements, a polyurethane liquid membrane method of waterproofing is utilised. Nevertheless, there is a cost associated with utilising this form of water resistance.

    Greater flexibility is possible with the use of polyurethane liquid membrane. However, polyurethane is extremely sensitive to the amount of moisture that is already present. As a result, before applying polyurethane, one must carefully evaluate the amount of moisture that is already present in the concrete slab. If this step is skipped, the membranes may eventually peel off or become unbonded.

    This technology gives a high degree of flexibility, which makes it very suitable for a wide number of applications. It is particularly well-suited for use on flat roofs, which is why it is so popular. It is important to note that this adaptability does come with a heavy price tag attached to it.

    Due to the fact that polyurethane membranes are sensitive to moisture, it is necessary to have an expert evaluate the amount of moisture contained in concrete slabs. Within a few months, the coating has the potential to peel off and cause debonding if it is not treated with care and applied to the appropriate surface.

    The use of waterproofing has shown to be a crucial component in protecting commercial infrastructures from the significant temperature swings that are characteristic of the environment in Australia.

    Because each of these choices offers a unique set of advantages, it is possible to effectively waterproof your business buildings by selecting any one of the aforementioned methods. Choose the waterproofing solutions that are most suitable for your building, and then have a painting service that is handy for you put those solutions into action.


    The process of waterproofing a building is an essential step in preventing damage to the structure that may be caused by water. It can be accomplished by a wide variety of approaches, and there is a wide range of strategy that can be utilised to waterproof buildings. The following article provides an overview of all of the different ways that are used to waterproof buildings, as well as some advice on how to choose the approach that would be most suitable for your requirements. If you have been wondering whether or not it would be time to add this type of security to your own home or business property, take another look at the steps that have been stated above and see if any of them seem like they might apply to what it is that you are looking for!

    Frequently Asked Questions About Waterproofing Methods

    The most common types of waterproofing are cementitious waterproofing, liquid waterproofing membrane, bituminous membrane, bituminous coating, and polyurethane liquid membrane.

    Waterproofing in building construction is the process of making a structure water-resistant or impervious to the ingress of water. This can force the water through the cracks, resulting in structural damages and moisture-related problems such as mould, mildew, and decay.

    Polyurethane is made up of two components, base and reactor. Polyol acts as the base, while isocyanide is the reactor component. The combination of both these in a specific design ratio creates a liquid coating for waterproofing applications.

    A waterproofing membrane is a thin layer of waterproof material that is laid over a surface. This layer is continuous and does not allow water to pass through it. For example, a waterproofing membrane could be laid above the structural slab and below the finish tiles on a flat terrace.

    There are many types of waterproofing materials. Some of the best and most common include; Polyurethane, Cementitious Coating, EPDM Rubber, Rubberized Asphalt, Thermoplastic, Bituminous Membrane, and PVC Waterproofing Membrane.

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