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Polyurethane Coatings: Best Waterproofing Chemical for Terraces

High-traffic terraces in commercial buildings face unique challenges that set them apart from residential spaces or low-use areas. These terraces are part of a busy, functional environment that needs to handle constant stress while maintaining its integrity. 

Choosing the best waterproofing chemical for terrace is about preventing leaks and ensuring durability, safety, and long-term performance.

When it comes to demanding spaces like rooftop cafés or corporate terraces, polyurethane waterproofing stands out as the ultimate solution. Want to know why it’s the best choice for high-traffic terraces? Keep reading to find out!

Why Is Polyurethane Coating the Best Waterproofing Chemical for Terraces?

Elasticity and Durability

In commercial settings, terraces often serve as gathering spots for events, outdoor cafes, or breakout zones. This means they see heavy foot traffic daily, not to mention the weight of furniture, equipment, or occasional machinery. Polyurethane coatings are one of the best water leakage solutions for roof, creating a durable layer that withstands such pressures, keeping the terrace safe and intact.

In regions with extreme climates, terraces face constant expansion and contraction which cause traditional waterproofing materials to lose their effectiveness over time. Known for its flexibility and high elasticity, polyurethane waterproofing adjusts to the surface’s natural movements without cracking, making it ideal for terraces in such environments.

Seamless Membrane Creation

Liquid-applied polyurethane coatings form a completely seamless layer over the surface, unlike other waterproofing methods that may involve seams or joints. This is especially important for terraces, where even small gaps in the waterproofing can allow water to seep through.

High Resistance to Abrasion, Water, and Chemicals

Terraces in commercial buildings are subjected to heavy use, exposure to water, and sometimes accidental spills of chemicals or cleaning agents. For instance, a rooftop café might deal with spills from food, drinks, or cleaning chemicals. Polyurethane coatings offer a surface that is tough and resistant to all these factors, ensuring that the waterproofing remains effective despite constant wear and tear.

UV and Weather Resistance

Terraces are exposed to all kinds of weather: heavy rains and intense sunlight. Water leakage can damage the building’s interior, lead to mould growth, or weaken the structure over time. Similarly, prolonged exposure to UV rays can cause the surface to deteriorate, making it prone to cracks and fading. For example, a terrace used for open-air office events must stay dry and usable regardless of sudden rains or scorching heat. 

Polyurethane coatings excel here, forming a waterproof chemical for roof against both water and UV rays.

Adhesion to Surfaces

Polyurethane coatings offer excellent adhesion to various surfaces, including concrete, metal, and wood. This ensures a secure bond that enhances the durability and performance of the waterproofing layer.

Corrosion Resistance

In addition to protecting against water and chemicals, polyurethane coatings also resist corrosion. This makes it suitable for terraces in industrial or commercial settings where exposure to corrosive substances might occur.

Environmentally Friendly and Non-Toxic

Polyurethane is a safe and eco-friendly option. Once cured, it is non-toxic and suitable for use in spaces where people frequently gather, such as open-air offices, rooftop lounges, or recreational areas.

Sunanda Global’s Polyurethane: Best Waterproofing Chemical for Terraces in Commercial Buildings

SUNPRUFE PU1K

SUNPRUFE PU1K is a single-component polyurethane waterproofing solution designed to provide seamless protection for concrete surfaces. It offers exceptional durability and flexibility under extreme conditions.

Features

  • Single-component, easily applied with a brush, roller, squeegee, or spray.
  • Strong adhesion to concrete, maintaining flexibility in extreme temperatures.
  • Creates seamless waterproofing.
  • Thick and flexible membrane, eliminating the need for reinforcement layers.

User Guidelines

  • Clean the surface thoroughly with a stiff brush.
  • Fill voids and cracks; level irregular surfaces with polymer-modified mortar and cure for 24 hours.
  • Prime the surface using SUNPRIME PU and air cure for 30 minutes.
  • Apply the first SUNPRUFE PU1K coat at 1.2–2.3 kg/m².
  • Allow the coat to cure until tack-free before applying the second coat.
  • Air-cure the final coat for 12–48 hours, depending on conditions.

SUNROOF PU

SUNROOF PU is a versatile, eco-friendly waterproofing solution designed for terraces, roofs, and other surfaces. It offers excellent durability and UV resistance.

Features

  • Strong, flexible membrane that doesn’t require reinforcement.
  • Does not stain tiles or marble and is UV-resistant.
  • Can be applied on damp, visibly dry surfaces without blistering.
  • Suitable for confined spaces with a non-odorous formulation.
  • Non-toxic, breathable, and environmentally friendly with no harmful fumes.

User Guidelines

  • For new concrete: Ensure full curing before application.
  • For old concrete: Clean, wash, and remove debris. Repair damaged areas with polymer-modified mortar.
  • Prime the surface with SUNPRIME adhesion promoter.
  • Apply the first coat at 1 kg/m² and the second coat at 0.5 kg/m², with a 4–6 hour interval.
  • Finish with a protective course specified by the client.

Why Choose Sunanda Global?

At Sunanda Global, we understand the importance of protecting high-traffic terraces in commercial buildings. It’s about ensuring the safety of the people who use these spaces and preserving the prestige of the structures themselves. With our expertise and proven track record in delivering exceptional results for major projects both in India and abroad, we’re proud to be recognized as the best waterproofing company for your needs.

Whether you’re managing a bustling corporate terrace or a rooftop event space, our solutions offer durability, safety, and peace of mind. If you’re looking for reliable waterproofing contractors in Mumbai or anywhere else, we’re here to help. 

Contact Sunanda Global today and let us safeguard your commercial building with the best waterproofing solutions!

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