Delta Polyurea Waterproofing

Delta Polyurea is a waterproofing product that displays higher physical properties than other traditional waterproofing materials. It comprises of two components that is hot spray applied to 80⁰C and pressurized at 2,500 psi using plural component equipment to form a very tough elastomeric membrane of 2mm thickness.


Waterproofing System

FAQs

1. What is Delta Polyurea Waterproofing Systems?

Delta Polyurea is a waterproofing product that displays higher physical properties than other traditional waterproofing materials. It comprises of two components that is hot spray applied to 80⁰C and pressurized at2,500 psi using plural component equipment to form a very tough elastomeric membrane of 2mm thickness.

2. Why is Delta Polyurea the best solution to waterproof existing RC roofdecks?

  • Because Delta Polyurea forms a seamless waterproof layer of average 2mm thickness that would be resistant to foot traffic, weathering and UV exposure providing a new protection layer to the existing RC roofdeck from water penetration.
  • Because Delta Polyurea is applied to existing RC roofdecks with minimum disruption. It is sprayed onto the existing top layer material and left exposed, making the whole application process fast and less disruptive.
  • Even with existing structures like pipes and ductings, Delta Polyurea is applied to existing RC roofdecks without compromising quality and watertightness because it is flexible and spray-applied.

3. Will Delta Polyurea crack due to the movement of concrete roofdeck?

No. It has an elongation property up to 600%.

4. How long will Delta Polyurea last?

Delta Polyurea has a very long life span because it is non-biodegradable. It will last as long as the building is standing.

5. In the future, is it easy to conduct inspections onto the roofdeck to check the Delta Polyurea application?

Yes. Because Delta Polyurea upon application is left exposed, post job inspections can be easily done visually and results would be more conclusive.

6. Is Delta Polyurea environmentally friendly?

Yes. Delta Polyurea is 100% solids with zero Volatile Organic Content.

7. What is the difference between PU and Polyurea?

Polyureas are closely related to polyurethanes. Both are two component systems made with Isocyanate- based materials. However, while the second component in polyurethane is polyol resin, the second component in polyurea is a polyether amine.

In terms of performance, conventional polyurethanes require a catalyst, which is sensitive to temperatures and moisture. Low temperatures can slow the reaction and moisture can interfere with the reaction causing blistering and other negative effects. Polyureas, on the other hand do not require a catalyst. Reactivity for these coatings is fast, typically 3-10 seconds. Consequently they are able to cure at temperatures as low as –20 C and in the presence of moisture.

8. What is the difference between Epoxies and Polyurea?

In terms of performance, unlike polyureas, epoxies require a catalyst. They are sensitive to temperature, humidity and moisture, giving them a narrow window for application. Unlike polyureas, epoxies have extensive cure time and little or no elongation properties. This leads to frequent failure of the coating with expansion or movement of the substrate.