Hot-Air Welding Made Clear!

Sika® Pro-Weld™ is a groundbreaking innovation in commercial single-ply roofing that uses thermochromic ink technology for visual verification of correct seam weld temperature and speed. This industry breakthrough provides real-time feedback to assist our approved applicators in ensuring a water-tight installation. 

The Pro-Weld visual indicator changes from blue to clear when the automatic welding machine is set to the correct temperature and speed for an optimum weld. If the ink doesn’t change, the applicator is visually alerted, allowing for a quick adjustment to the machine and averting a potential problem.

Thermochromic Weld Technology
  • Hot-Air Welding Made Easy
  • Real-Time Visual Feedback
  • Get Up and Running Faster
  • Help Reduce Cold-Welds
Pro-Weld™ Membranes

The most common cause of a roof leak on a thermoplastic (PVC or TPO) roof system is related to improper welding of the membrane seams and details. Starting in 2023, Sika® Pro-Weld™ will be added to all stocked Sikaplan® 60mil membranes. The membranes will not be a custom order, won’t have longer lead times, and won’t increase the cost.  

Easier, Safer, and Faster

The introduction of Pro-Weld is just another example of Sika Roofing’s mission to make commercial roofing easier, safer, and faster for our applicator partners! Building owners also get peace of mind knowing that Sika Roofing continues with our commitment to roof system quality.  

Sika Pro-Weld

Pro-Weld™ Introductory Video

Sika® Pro-Weld™ installation guides and videos here