Waterproofing membranes
EXCALD WELDED HDPE — Welded HDPE Pre-Applied Waterproofing Membrane
Pre-applied, concrete-bonded HDPE waterproofing with hot-welded laps. The welded joint system offers a separate installation option for below-ground works where the project specification calls for welded seams.
Product image
Recommended applications
Basement slabs and walls, tunnels and underground structures.
Key product data
| Composite thickness | 1.2 / 1.5 / 1.8 / 2.0 mm |
|---|---|
| Roll dimensions | 1.2 × 20 m or 2.0 × 20 m |
| Lap | 100 mm per supplied method |
Reference information from the supplied product data. Performance and consumption depend on the grade and application conditions; confirm details in the batch documentation.
Standards & test methods
Reference standards and test methods stated in the product technical data. Welded-joint peel values are reproduced as printed; confirm the test specimen dimensions and units with the test report.
| Property | 1.2 mm | 1.5 mm | 1.8 mm | 2.0 mm | Test method |
|---|---|---|---|---|---|
| Bare HDPE film thickness (mm) | 0.85 | 0.95 | 1.05 | 1.20 | ASTM D3767-2003 |
| Tensile strength (MPa) | 21 | 25 | 25 | 28 | ASTM D412-2016 |
| Elongation (%) | 500 | 500 | 500 | 500 | ASTM D412-2016 |
| Puncture resistance (N) | 800 | 1000 | 1200 | 1350 | ASTM E154-2008 |
| Peel adhesion to concrete (N/m) | 1800 ±300 | 1800 ±300 | 1800 ±300 | 1800 ±300 | ASTM D903 |
| Low-temperature flexibility | ≤-25°C | ≤-25°C | ≤-25°C | ≤-25°C | ASTM D1970 |
| Dimensional change (%) | ≤1 | ≤1 | ≤1 | ≤1 | ASTM D1204 |
| Colour | White | White | White | White | — |
| Composite membrane thickness (mm) | 1.2 | 1.5 | 1.8 | 2.0 | ASTM D3767-2003 |
| Adhesive thickness (mm) | 0.2–0.3 | 0.2–0.3 | 0.2–0.3 | 0.2–0.3 | — |
| Peel adhesion: welded joints (N), as printed in TDS | 11000 | 15000 | 15000 | 15000 | ASTM D6392:2012 |
| Roll dimensions | 1.2 × 20 m / 2 × 20 m | 1.2 × 20 m / 2 × 20 m | 1.2 × 20 m / 2 × 20 m | 1.2 × 20 m / 2 × 20 m | — |
References reproduce the editions listed in the product data. Confirm the required edition, selected grade and supporting test report for consultant approval.
Application & selection notes
For hot, dry site conditions, check substrate temperature, moisture, working time and curing before application. The heat resistance of a cured membrane does not permit installation outside the application limits in its TDS.
Specify for Saudi Arabia, UAE & GCC projects
Send the project location or destination port, application, substrate, required thickness, area in m², quantity and delivery schedule. Request the selected grade, export packing, TDS and batch documentation for consultant review. Manufactured in China; project approvals are reviewed for each enquiry.
Contact the export team