Accumulation of moisture and dampness on walls can prove to be a menace for your home. It acts as an ideal environment for bacteria and fungus to thrive, which might cause unpleasant odour and appearance, affect structural integrity and result in health hazards. To avoid such problems, it is crucial to employ waterproofing solutions for the home during the construction process. There are several such solutions available in the market. Which one is perfect for your needs? Read on to find out.
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Benefits of waterproofing
So why should you waterproof your building? Here are some benefits of waterproofing:
Structural integrity
By protecting walls against the accumulation of moisture, waterproofing prevents problems such as mould growth, rotting of wood, concrete deterioration and metal corrosion. It also prevents cracks and damages on walls and increases the longevity of the masonry used in order to ensure maximum structural strength.
Comfort and health
Mould and mildew growth can affect the indoor air quality of your home and cause respiratory diseases. This can be prevented by waterproofing. Moreover, it also upholds the insulation capacity of the structure of the house, thereby ensuring proper regulation of indoor temperature.
Financial benefits
Waterproofing during the construction process results in savings of future maintenance costs by reducing the need for repairs of water damage. The reduced risk of water damage makes the property more appealing to tenants and buyers as well.
Environmental benefits
Waterproofing reduces the generation of construction waste created by the process of material repairs of water damage. It also increases the lifespan of the existing materials so that they don’t require frequent replacement.
Read also: Home waterproofing: Chemicals, products and services explained
Types of waterproofing: Interior vs exterior
Waterproofing is done using either the interior or exterior approach. Let’s get an insight into both these approaches to help you decide which one suits you better.
| Interior waterproofing | Exterior waterproofing | |
| Purpose | This approach is used to manage water that has already entered the structure and prevent it from spreading further or causing more damage. | This prevents the water from getting inside the structure of the building by creating a barrier on the exterior. |
| Method | This is done by installation of specialised interior drainage systems or applying sealants or coatings on walls and floor. | This can be done by applying sealants after digging around the structure or installation of drainage systems that channel the water away from the structure. |
| Applications | Managing seepage and flooding in basements and controlling damage to floors, walls and structural elements. | Preventing the entering of water from outside in the foundation and rain and moisture related damage to outer walls. |
| Advantages | Solves problems related to existing dampness issues and is less invasive than the exterior approach. | Addresses the problem before it gets unmanageable and provides extensive protection to the building at a foundational level. |
Options available for waterproofing
Waterproofing can be done using several types of materials. Here is a comprehensive list you can choose from:
Liquid waterproofing membrane
These membranes are either acrylic- or polyurethane based and provide a flexible and resilient protective layer to the surface. Its ease of usage, seamless finish, resistance to UV and environmental factors and resilience to structural movements makes it a great choice for outdoor concrete surfaces like roofs and balconies.
Cementitious waterproofing
This substance is composed of cement, sand and waterproofing additives to be applied in several layers for a thick barrier. This is a cost-effective and easily accessible option that provides durability and exceptional cohesion to concrete surfaces, making it suitable for swimming pools, water tanks and basements.
Bituminous coating
This option uses a bitumen-based compound applied in thick coats. Its durability and resistance to harsh weather conditions makes it perfect for roofs and foundational structures vulnerable to moisture accumulation.
EPDM membrane
EPDM membrane is largely composed of a synthetic rubber called ethylene propylene diene monomer and is available in the form of large sheets. Their high durability, flexibility and resistance to UV rays makes it perfect for roof and terrace applications, especially the ones that are flat or have a low slope.
Silicone waterproofing
Silicone-based sealants are widely used for sealing joints of windows and doors. This material is durable and flexible enough to be accommodated even in the smallest of gaps and provides superior resistance to weathering and wear.
PVC waterproofing
Polyvinyl chloride membranes used for waterproofing need to be welded onto the surfaces. Alongside their strength and superior waterproofing abilities, these membranes are also highly resistant to corrosion caused by chemicals. They are generally used in roofs and decks.
Waterproofing sealants
This convenient waterproofing solution is available in different formulations depending upon the surface it is meant for. They are versatile and can be directly applied or sprayed on the surface, making it easy to use. Moreover, they are available for all types of applications and waterproofing needs.
FAQs
Why is it necessary to waterproof buildings?
Waterproofing a building is important in order to prevent water seepage inside the structure that causes mould growth and deterioration of the masonry. It increases the lifespan of the building and ensures proper strength.
Does waterproofing have long-term financial benefits?
Yes, waterproofing results in cost-savings in the long run by reducing the need for repairs and maintenance and replacement of damaged materials.
How does waterproofing improve indoor air quality?
By preventing moisture accumulation and mould growth, waterproofing improves the indoor air quality and reduces the risk of respiratory diseases and allergies caused by the foul odour.
What is the difference between interior and exterior waterproofing?
Interior waterproofing is used to address existing issues, i.e. the problems caused by moisture that has already penetrated the structure of the building. Exterior waterproofing prevents the water from entering in the first place and protects the structure from external elements.
Can waterproofing affect the value of the property?
A properly waterproofed building guarantees structural integrity and ensures lesser risk of water seepage related problems, which can be an attractive feature for potential buyers or tenants,
Can I do waterproofing by myself?
Although you can take up minor waterproofing jobs yourself, it is recommended to consult a professional for larger areas to ensure the use of proper expertise and equipment.
How often should a building be waterproofed?
Waterproofing should be regularly inspected and refreshed every few years depending upon the environmental factors in the region such as weather and humidity.
| Got any questions or point of view on our article? We would love to hear from you. Write to our Editor-in-Chief Jhumur Ghosh at jhumur.ghosh1@housing.com |
