VARIMAT 710/510: Proven Welding Machines for the Roof

Product Stories25 Aug 2026

Are you welding roof membranes, plastic waterproofing membranes, or TPO membranes? Then welding quality, productivity, and low operating costs count. Learn how VARIMAT 710 and 510 make your work faster and more economical.

Author: Chantal Manella, Marketing Specialist, Leister AG, Switzerland

Demanding welding in everyday construction site life

Anyone who works on flat roofs knows the challenges: fluctuating stresses on the construction site, increasing cost pressure and high demands on welding quality. At the same time, building owners and clients expect clean, traceable execution. The new Leister automatic welding machines VARIMAT 710 and VARIMAT 510 were developed precisely for these requirements. Both devices combine Leister's core values of Pioneer, Premium and Performance: innovative technology, high-quality workmanship and maximum performance for professional roofers.

More welding output, lower labor costs

Time is money – especially on large roof areas. That is why the VARIMAT 710 and the VARIMAT 510 impress with high welding speeds. Thanks to optimized technology and stable process control, labor costs can be significantly reduced. The high productivity enables up to 30% more welding output compared to standard market solutions. For you, this means: more welded meters per workday and more economical projects. This productivity advantage becomes noticeable quickly, especially on large flat roofs.

Constant welding quality even with undervoltage

Not every construction site offers ideal power conditions. Voltage fluctuations can impair welding quality and cause costly rework. This is where both VARIMAT models show their strengths: The intelligent power management ensures constant welding parameters and reliable results even with undervoltage. You benefit from stable welding quality and gain additional process reliability. That is performance you can rely on.

Precise tracking reduces rework

Clean weld seams do not happen by accident. Stable machine guidance is crucial so that roofing membranes are welded reliably and evenly. The balanced weight distribution, the ergonomic design, and the adjustable transport axle ensure precise tracking for both models. This reduces corrections and rework while increasing weld quality. Especially in demanding roof edge zones and long welding seams, this high precision ensures a consistently reliable weld quality.

One machine for different construction sites

On construction sites, sometimes 230 V and sometimes 400 V is available. Anyone who wants to remain flexible needs a solution that adapts to different conditions. That is why the VARIMAT 710 and VARIMAT 510 automatic welders can be easily switched between 230 V and 400 V. One device covers different application scenarios and simplifies construction site planning. In keeping with the Leister value Pioneer: innovative technology that makes your work easier.

VARIMAT 710 Document quality and win projects

The VARIMAT 710 offers an additional advantage for companies that want to differentiate themselves in the competition. With myLeister LQS Roofing welding data is digitally recorded and documented. GPS-based welding logs enable traceable quality verification and create transparency for clients. At the same time, the reports support tenders, audits, and quality assurance. Those who can deliver documented quality stand out from the competition and create additional trust.

Less maintenance, longer service life, lower total costs

Both devices are designed for daily use on the roof. The brushless ECOdrive blower motor reduces wear, lowers maintenance requirements, and extends service life. Thanks to a robust design and a service life of over ten years, total costs decrease significantly over the entire product life cycle. For roofing companies, this means an economical investment with long-term added value. This stands for Premium: high-quality technology you can rely on for many years.

Your benefits at a glance

up to 30% higher welding productivity on flat roofs
constant welding quality even with undervoltage
precise tracking reduces rework and scrap
flexible switching between 230 V and 400 V
ergonomic design for comfortable work
brushless ECOdrive motor reduces maintenance
service life of over ten years reduces total costs by 20%
5-year manufacturer warranty
VARIMAT 710 with LQS Roofing for digital quality verification
VARIMAT 710 with documented welding data creates competitive advantages

Take the next step on the flat roof

Whether maximum efficiency with the VARIMAT 510 or documented quality with the VARIMAT 710: Both automatic welders support you in welding flat roofs more efficiently, safely, and profitably. Test the new VARIMAT models and see their performance for yourself. Your local Leister contact person will be happy to advise you and show you which model best suits your requirements.