TPO Hot-Air Welding Systems

TPO Hot-Air Welding Systems

TPO Hot-Air Welding Systems join sheets of TPO roofing membrane using controlled heat rather than adhesives or fasteners alone. The result is a continuous, fused seam that resists water intrusion and stands up to Chicago's temperature swings, wind, and sun exposure on flat and low-slope roofs.

How the Process Works

• Seam Preparation — Membrane edges are cleaned and aligned before welding to ensure a solid bond.
• Heat-Welded Fusion — A hot-air welder melts the membrane surfaces together, creating a single, sealed layer instead of a taped or glued joint.
• Seam Inspection — Finished seams are checked for consistency and full fusion along their length.

Where It Fits on the Roof

• Flat Roof Systems — TPO welding is used across flat and low-slope commercial and residential roofs.
• Sheet Metal Flashing Fabrication — Custom flashing works alongside welded seams at edges, valleys, and penetrations.
• Fall Protection & Safety Systems — Harness systems keep crews secure while welding equipment is in use on the roof surface.

TPO welding is typically considered for new flat roof installations, TPO roof replacements, and repairs where an existing seam has failed.