UltraPly TPO InvisiWeld System
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Firestone UltraPly TPO InvisiWeld System is a high-performance, non-penetrating TPO membrane fastening system. The mechanically attached system provides high wind uplift ratings. Installation is simplified, reducing labor and material costs.

This VOC-free system features TPO-coated Firestone UltraPly TPO InvisiWeld Plates attached to the UltraPly TPO membrane using an induction welding tool. The InvisiWeld System meets or exceeds Factory Mutual (FM) approvals and requirements.

The roofing season can be extended since the InvisiWeld System functions well in many climates, including extremely cold environments where adhesives and asphalt are difficult to use. Eliminating insulation seam plates and fasteners reduces installation time and labor costs. Membrane waste is less because a 6" in-seam lap is no longer needed. This system requires less material for perimeters and corners than other attachment methods. 

Quick and easy installation method:
  1. Fasten TPO-coated Firestone UltraPly TPO InvisiWeld Plates to Firestone approved insulation boards in a grid pattern with Firestone Heavy Duty, Heavy Duty Plus, or Purlin fasteners.
  2. Place UltraPly TPO membrane over the grid of InvisiWeld plates.
  3. Use induction welding tool to secure each plate to the underside of the TPO membrane – takes just 6 seconds!

Technical Database Quick Links
Technical Information Sheet
Design Guides

Product Literature:
InvisiWeld Sell Sheet - Item 1273 (800.4Kb)
           
                    
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