Hot-Air Welders (Handheld & Automatic)

TPO and PVC membranes are joined by heat, not glue, and getting that seam right is what keeps a flat or low-slope roof watertight for the long haul. We use both automatic and handheld hot-air welders so every seam, from a long field run to a tight detail around a penetration, gets a fused, continuous bond rather than an adhesive lap that can loosen over time.

How the Seams Get Checked

Seam Rollers & Probes — every welded seam is rolled for consistent contact, then probed by hand along its full length before the roof is called finished.
Membrane Fastening Tools & Stand-Up Screw Guns — fasteners are set at consistent depth and spacing beneath the membrane, so the welded surface stays smooth and unbroken.

Where This Fits

Hot-air welding applies to TPO, PVC, and other single-ply membrane systems, whether on a new commercial installation or a repair to an existing flat roof. Because the weld is a physical fusion of the material itself, it's the detail worth asking about on any membrane roof, new or repaired.