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Protect Your Roofs A Lifetime with Polyurethane Waterproofing
Published : January 31, 2025, 12:00 AM
Updated : January 31, 2025, 12:00 AM
Author :
krishnanunni
Table of Contents
Polyurethane(PU) waterproof coating is one of the most sought-after technologies used today, thanks to its durability, strength and flexibility. This makes it a popular choice for your roofs, balconies, and terraces. Considered a must during most construction works, this is now a popular water-resistant technique due to its quick and straightforward application. The material is used as a top coat, not only assisting in waterproofing but also providing additional advantages of preventing dust accumulation, preserving surface brightness, and providing an aesthetic appearance. Let's look at how we can select a PU roof coat that aligns with your requirements.
Polyurethane(PU), a Quick Explanation
Polyurethane or PU is an organic polymer, or simply saying, a plastic material that can exist in various forms. It can be made rigid or flexible depending on its usage and is commonly used in one form or another every day, be it at your home within your refrigerators, car parts, shoe soles, or your office on your furniture cushions, or for leisure, for example, in your surfboards.
H2: Application Process of Polyurethane Waterproofing Coats
PU-based waterproofing can be done in a matter of a few steps. Here’s how-
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- Materials - Alongside the polyurethane waterproofing product, you will need a mixing device and a roller, brush, or airless spray.
- Substrate and Primer - You must ensure the concrete surface is clean and dry. On absorbent surfaces, it is advisable to apply a priming coat to seal pores and stabilise the surface before using a polyurethane waterproof coating.
- Application - Refer to the Technical Data Sheet (TDS) to determine if your waterproof paint is ready to use or requires thinning, and then cover the entire surface. You can check the same sheet to see if multiple layers of coating are necessary and the recommended waiting time between coats.
- Reinforcement - Use sealing strips to strengthen corners by applying them to the first layer while it's wet. Let it dry and fully cover it with a second coat. You can notice the maximum strength achieved in a week.
- Cleaning - You can proceed to cleaning immediately after use. If the polyurethane waterproofing product has dried, industrial solvents like acetone and isopropyl alcohol can be used.
H2: The Benefits of a PU Roof Coat
In India's diverse climate and building challenges, strong support for your roofs is a must. This is where polyurethane waterproofing comes in handy, guaranteeing you multiple advantages:
1. Resilience against Nature
- Braving the Monsoons - PU forms a seamless, impermeable barrier, safeguarding roofs, balconies and terraces from torrential rains.
- Safeguarding from the Sun - The UV resistance of the material prevents degradation and colour fading due to harsh sunlight.
- Defence from the Heat - PU deflects heat, thus helping to keep your interiors cool and reducing energy consumption.
- Temperature - PU coating is flexible and crack-resistant and can easily adjust to the temperature variations of the Indian climate.
2. Adaptability and Durability
- Substrates- The PU waterproof coat adheres strongly to various surfaces like concrete, metal, asphalt, making it the perfect choice for the diverse Indian construction practices.
- Crack Binding - Owing to its elasticity, PU can easily cover minor cracks and last longer preventing any water leakage.
- Minimal Maintenance - The product’s durability helps to minimise the need for frequent repairs and re-application, thus saving costs and hassle.
3. Additional Benefits -
- Quick Installation - Compared to traditional methods, polyurethane coats are liquid and therefore its application allows for faster completion, especially during harsh climatic conditions.
- Aesthetics - These coats come in various colours and finishes and can add a decorative touch to rooftops, making your homes distinctive and attractive.
- Waterproofing Versatility - Beyond roofs, these products can also be used to protect your basements, swimming pools, and other wet areas from moisture damage.
Price of Polyurethane Waterproofing in India
PU waterproofing services are priced between Rs.75 and Rs.125 per square foot. Compared to alternative waterproofing systems, PU waterproofing coating demands less expertise and supervision and offers a quick and straightforward application process. This makes it a popular choice among contractors, consultants, home builders, and homeowners alike.
While waterproofing can be a major investment, the expense is justified by its ability to provide long-lasting protection and lesser expenditure in the future. A happy home leads to a happy life, so it is always favourable to make your home as healthy as possible.
Do remember to select the appropriate waterproofing material to ensure maximum structural durability, minimal maintenance, energy efficiency, and the overall well-being of your daily life. You must also consider the locality and climatic conditions as well before finalising the product.
Structures face various threats to their durability, including heavy rainfall, extreme climates, salinity, and more, underscoring the importance of waterproofing in construction. Effective waterproofing acts as a shield by creating an impenetrable barrier against moisture, reducing the risk of structural damage and enhancing your living comforts. It's crucial to recognize that water damage isn't exclusive to rainy conditions. Therefore, waterproofing remains a crucial element in constructing buildings, even in warm and arid climates.
By carefully taking these factors into account, you can leverage the numerous advantages of polyurethane waterproofing to protect your roofs and experience tension-free, long-lasting performance for years.
Considering getting a waterproof coating for your roof today? Try the professionals at NoBroker. Our Home Services team has exceptionally skilled professionals, who are all 5-star rated and come with the best experience in the industry.
Frequently Asked Questions
Polyurethane does expire, but an unopened can can last up to three years while an opened one lasts up to one year.
One can identify this if it produces a bad odour, a thick consistency, a difference in colour, or difficulty in drying.
If stored properly, polyurethane can be used for about 6 months to one year from opening. However, exposure to air, humidity, and warmth can cause variations, leading to an early expiration date.
It is ideal to store the product in a clean, dark and dry place.
Normally, PU coatings can last up to 25 years and can go forward up to 50 years.
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