Below-Grade Concrete
A continuous liquid-applied layer can follow corners and penetrations in basement and other protected below-grade waterproofing assemblies.
Single-Component PU Waterproof Coating
Tianyuan supplies single-component, moisture-curing polyurethane waterproof coating in Type I and Type II grades. Applied as a liquid, it cures into a continuous waterproofing layer that follows corners, drains and penetrations. Share your substrate, application area and project requirements to select a grade and request a quote.
Single-Component PUType I & Type IIMoisture-CuringLiquid-AppliedFactory-Direct Supply
For project-specific pricing, send your technical requirements and destination port.
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Quick specifications
- Product Form
- Single-component, liquid-applied polyurethane coating
- Curing Mechanism
- Reacts with moisture in the air to form a continuous film
- Available Grades
- Type I and Type II
- Tensile Strength
- Type I ≥1.9 MPa; Type II ≥2.45 MPa
- Elongation at Break
- Type I ≥550%; Type II ≥450%
- Tear Strength
- Type I ≥12 N/mm; Type II ≥14 N/mm
- Solid Content
- ≥80%
- Watertightness
- 0.3 MPa for 30 min: watertight
Product overview
Selecting the Right PU Coating for the Project
Single-component polyurethane coating is used where a liquid-applied waterproofing layer must follow the shape of the substrate and its details. Unlike a sheet membrane, it does not require a cut lap at every change of direction. The continuity of the finished layer still depends on sound substrate preparation, correct treatment of joints and penetrations, and the specified film build.
Tianyuan offers Type I and Type II grades. Type I provides greater elongation for assemblies where movement is a priority; Type II provides higher tensile and tear strength. Share the intended use, substrate and project requirements when selecting a grade.
Installation Details That Need a System Decision
Substrate condition determines preparation and primer selection. Corners, drains, cracks and other movement points may need reinforcement. Specify a protective finish for assemblies where the coating will not remain exposed.
For a different material approach to interior wet areas, see JS polymer cement waterproof coating. For sheet-based below-grade waterproofing, see self-adhesive bitumen membrane.
Applications
Bathrooms & Kitchens
Coats drains, wall-floor junctions and service penetrations in bathrooms and kitchens beneath a suitable screed or tile system.
Balconies
For balcony waterproofing beneath a suitable protective finish. State the substrate, movement joints, drainage design and final covering when requesting a product recommendation.
Protected Roof Areas
Forms a continuous waterproofing layer in roof assemblies beneath a suitable protective finish.
Key benefits
One Component, Fewer Mixing Decisions
The material is supplied as a single component, so site crews do not have to measure and combine separate A and B components. Follow the product-specific instructions for any stirring, opening time and handling requirements.
Continuous Coverage at Details
A liquid-applied layer can follow corners, drains and penetrations without cutting sheet pieces to each shape. Detail reinforcement and substrate preparation still depend on the project design.
Two Grades for Project Selection
Type I offers greater elongation, while Type II provides higher tensile and tear strength. Choose the grade to match the movement and strength requirements of the assembly.
System Choices Made Up Front
Substrate preparation, primer, detail reinforcement and protection are selected as one waterproofing system for the site conditions.
Technical specifications
| Test Item | Unit | Type I | Type II |
|---|---|---|---|
| Tensile strength | MPa | ≥1.9 | ≥2.45 |
| Elongation at break | % | ≥550 | ≥450 |
| Tear strength | N/mm | ≥12 | ≥14 |
| Low-temperature flexibility | °C | -40, no cracking | -40, no cracking |
| Watertightness | MPa / min | 0.3 / 30, watertight | 0.3 / 30, watertight |
| Solid content | % | ≥80 | ≥80 |
| Tack-free time | h | ≤12 | ≤12 |
| Hard-dry time | h | ≤24 | ≤24 |
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Installation guide
View documents ↓Check the Substrate
Remove loose material and contamination. Repair defects and prepare the substrate and primer according to the selected system.
Plan Critical Details
Review corners, drains, penetrations and movement joints before coating the main area. Specify reinforcement where the project design or product guidance requires it.
Apply the Selected System
Apply with the specified brush, roller or scraper method and build the designed film thickness in the prescribed coat sequence.
Protect and Inspect
Keep the coating free from damage during curing and subsequent trades. Inspect continuity and the specified film thickness before installing the protective finish.
Technical downloads
PU Coating Technical Data Sheet (TDS)
Request via contact form
PU Coating Application & Safety Guide
Request via contact form
Related product
Frequently asked questions
What is a single-component PU waterproof coating?
It is a liquid-applied polyurethane coating supplied as one component. It reacts with moisture in the air and cures into a continuous waterproofing film.
Are Type I and Type II both available?
Yes. Type I provides greater elongation; Type II provides higher tensile and tear strength. Share the waterproofing location and design requirements when requesting a recommendation.
Can this coating be applied directly to damp concrete without primer?
Substrate moisture limits and primer selection depend on the project system. Prepare the surface and select the primer according to the supplied application guide.
Is this product suitable for an exposed roof?
This coating is intended for protected roof assemblies. For direct weather exposure, specify the roof build-up and request a suitable exposed-use system.
How much coating is needed and when can the next coat be applied?
Consumption depends on the designed film thickness and substrate profile; waiting time also varies with temperature, humidity and grade. Use the Type I or Type II TDS to plan quantities and coat intervals.
What information should I send for a technical recommendation and quote?
Please provide the application area, substrate, approximate area, protected or exposed service condition, required standard or performance criteria, destination port and any project drawings or specification. Request the corresponding Type I or Type II technical data with your enquiry.
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