Polyurethane waterproofing has become a popular choice for safeguarding buildings from water damage. This versatile material offers a robust solution for various applications, ensuring the longevity and structural integrity of your property.

What is Polyurethane Waterproofing?

Polyurethane offers several advantages over traditional waterproofing methods. Unlike materials like sheets or rolls, polyurethane forms a continuous, liquid-applied membrane. This flexible coating adheres exceptionally well to various surfaces, creating a watertight barrier with no seams or weak points. These seamless properties are key to preventing leaks.


Furthermore, polyurethane boasts unique properties that make it ideal for long-lasting waterproofing. The membranes are highly resistant to cracking, peeling, and UV degradation, ensuring they protect for years to come. Additionally, their elastic nature allows them to accommodate slight structural movements without compromising the waterproof seal. Polyurethane’s chemical resistance adds another layer of protection, as it can withstand exposure to alkalis, acids, salts, and other harsh elements. Finally, polyurethane’s fast-curing properties minimize downtime during construction or renovation projects.

Where Can Polyurethane Waterproofings Be Applied?

Polyurethane waterproofing finds application in various areas of construction, including:

Rooftops: Flat roofs and balconies are particularly susceptible to water ingress. Polyurethane provides a durable and weatherproof barrier, protecting the underlying structure from leaks and damage.

Basements and Foundations: Below-grade areas are vulnerable to moisture intrusion. Polyurethane effectively seals basements and foundations, preventing water seepage and mould growth.

Wet Areas: Bathrooms, kitchens, and laundry rooms experience high moisture levels. Polyurethane creates a waterproof barrier on floors, walls, and around showers, preventing water damage and ensuring kitchen and bathroom waterproofing.

Pools and Water Features: Polyurethane offers exceptional waterproofing for swimming pools, ponds, and other water features, preventing leaks and ensuring structural integrity.


Polyurethane Waterproofing Vs. Traditional Methods


Feature Polyurethane Traditional Methods (Sheet Membranes/Asphalt Coatings)
Waterproofing Efficiency Joint free coatings provide highest level of waterproofing Multiple joints in the sheets introduce vulnerability in the waterproofing
Adhesion Superior adhesion to various surfaces (concrete, metal, wood) Do not adhere as well. Joints also tend to open up due to poor adhesion and bonding
Application Seamless application Seams and joints present, potential leak points
Installation Speed Faster curing times Slower drying times can extend project timelines
Weight Lightweight Can add significant weight to the structure
Environmental Impact Water based formulations have a lower impact Based on petroleum derivatives and have a higher environmental impact


Watch the below video on simple 4 steps to external waterproofing.

Choosing the Right Polyurethane Waterproofing Products With Sunanda Global 

Sunanda Global, the best waterproofing company recognizes the critical nature of selecting an appropriate waterproofing solution to safeguard your property. Polyurethane waterproofing products from Sunanda Global include:


SUNPROOF PU1K: It’s a type of liquid-applied polyurethane elastomeric membrane that’s used for waterproofing and sealing different surfaces. When it cures, it forms a rubbery finish with great flexibility and resistance to chemicals.


SUNROOF PU: This product is designed to waterproof a wide range of reinforced concrete surfaces, including roofs, overhangs, parapet walls, and exterior walls. It’s versatile enough to be applied on both flat and sloping roofs, whether they’re existing structures or newly constructed. Additionally, it serves as an effective damp-proof course when applied beneath the initial layer of bricks or blocks during masonry projects.


SUNGARD WB: This solution serves dual purposes for both exterior and interior applications, particularly on concrete surfaces. It acts as a topcoat for epoxy flooring, providing an additional layer of protection and enhancing durability. Moreover, it serves as a reliable protective coating for steel surfaces, offering defence against corrosion and other environmental factors.


Polyurethane waterproofing is a wise investment in the longevity and value of your property.  Its durability, versatility, and ease of application, coupled with the guidance of a professional like Sunanda Global, create a winning combination for long-term protection against water damage.  Don’t wait until leaks and structural issues arise.  Take a proactive approach and safeguard your space with the power of polyurethane waterproofing.