08/02/2024

Sika® Pro-Weld™ uses thermochromic ink technology for visual verification of correct seam weld temperature and speed.

Now you see it, now you don't. Utilizing thermochromic ink technology, Sika Roofing's innovative Sika® Pro-Weld™ provides visual verification of correct seam weld temperature and speed, which helps applicators avoid cold welds.

Applied to the edge of the membrane, the Pro-Weld visual indicator changes from blue to clear/light grey when the automatic welding machine is set to the right temperature and speed. If the ink color does not change, the applicator is alerted and can quickly adjust the machine to avoid problems.

Pro-Weld

The most common cause of roof leaks on thermoplastic (PVC or TPO) roof systems is the improper welding of the membrane seams and details. This breakthrough from Sika Roofing offers roofing  contractors real-time feedback to ensure water-tight installations.

The introduction of Pro-Weld is another example of Sika Roofing making commercial roofing easier, safer, and faster for applicators. It  also provides peace of mind to building owners that Sika is committed to the quality of its products.

Sika Roofing started adding Pro-Weld to all stocked Sikaplan® 60mil membranes in 2023. The membranes will not be a custom order, won't have  longer lead times, and won't increase the cost. 

Find the Technical Bulletin here.

Find installation guides and videos here.