The Leister UNIDRIVE 500 welds roof seams by machine at up to 4.5 metres a minute, around three times faster than doing it by hand, at a pressure your wrist cannot hold for an hour. At 4.5kg it still goes where the big machines cannot: skylight flashings, edge terminations, and small roofs.
Heat from 100 to 580 degrees and adjustable airflow suit TPO, PVC, FPO, and EPDM. The drive runs both directions for tight areas, and brushless motors are built for the long haul.
Leister UNIDRIVE 500 semi-automatic hot-air welder for thermoplastic membrane seams and detailed roofing work.
Current Leister data specifies 0.7–4.5 m/min drive speed, up to 100–580°C on 230 V variants, 4.5 kg machine weight and reversible drive.
Available configurations use 15–40 mm welding nozzles/rollers and are intended for membranes including PVC and TPO.
Fit the nozzle and pressure roller required for the membrane and seam width.
Set temperature, airflow and drive speed, make a test weld and inspect the peel/seam result before starting the finished run.
Align the machine on the overlap, maintain clean nozzle and roller surfaces, and use the reversible drive where access dictates the welding direction.
Exact voltage, power, roller material and seam width depend on the machine variant.
Set welding temperature, airflow and speed to the membrane manufacturer's specification and confirm the setup with a test weld before production work.
Detail zones the machine cannot access still require an appropriate hand-welding method.
Leister UNIDRIVE 500 Semi-Automatic Welding Machine Physical Properties
| Property | Value |
|---|---|
| Application Temperature | 100°C to 580°C |
| Power Consumption | 1500–2300 W |
| Weight | 4.5 kg |
| Welding Speed | 0.7–4.5 m/min |
| Nozzle Width Range | 15 mm to 40 mm |
| Length | 297.0 mm |
| Width | 173.0 mm |
| Compatible Membranes | ECB, EPDM, EVA, FPO, PIB, PO, PU, PVC, TPE, TPO, TPU |
| Electrical Classification | Class I |
| Certifications | CB Certification, CE, UKCA |