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GV2 – Roof Expansion Joints
Product Description
The VEDA JDT Series watertight roof expansion joints are designed for seismic and structural movement absorption while ensuring long-lasting waterproofing on flat roofs, podiums, and carparks.
They use continuous waterproof membranes with aluminium or stainless steel covers, providing resistance against significant three-dimensional movements and compatibility with multiple waterproofing systems.
Key Benefits
- Seismic-Ready – Handles large three-dimensional roof movements.
- Watertight Design – Continuous waterproof membrane ensures long-term sealing.
- Material Options – Aluminium or stainless steel for durability.
- Flexible Applications – Compatible with SBS, PVC, EPDM, and bituminous membranes (JDT 7.04).
- Movement Capacity – From ±20 mm up to ±200 mm depending on model and gap size.
- Custom Options – Special factory-welded fittings, corners, T, and cross pieces available.
Quick Selection – Comparison Table
| Series | Application | Gap Width (W) | Height (H) | Movement Capacity | Materials | Notes |
|---|---|---|---|---|---|---|
| JDT 7.02 | Watertight seismic joint for flat roofs | 50 / 100 / 150 / 200 mm | 104–136 mm | ±50 to ±200 mm | Aluminium or Stainless Steel | Available in angle/flat/vertical special pieces |
| JDT 7.03 | Watertight seismic joint for roof expansion | 50 / 100 / 150 / 200 / 300 / 400 mm | 40–109 mm | ±50 to ±300 mm | Aluminium or Stainless Steel | Continuous waterproof membrane with cover |
| JDT 7.04 | Special watertight joint for waterproofing | 25 / 50 / 80 mm | 25–50 mm | ±20 to ±30 mm | Nitrile (insert) | Compatible with SBS, PVC, EPDM; weldable fittings |
Packaging / Dimensions
- JDT 7.02: Gap widths 50–200 mm; heights 104–136 mm; movement ±50–200 mm; supplied in lengths; aluminium or stainless steel options.
- JDT 7.03: Gap widths 50–400 mm; heights 40–109 mm; movement ±50–300 mm; aluminium or stainless steel covers .
- JDT 7.04: Gap widths 25–80 mm; heights 25–50 mm; movement ±20–30 mm; black nitrile insert; supplied in 25 m lengths; factory-welded fittings available.
