Dependo-Weld is an APP modified bitumen sheet. It incorporates the resilient features of a non-woven polyester mat with the application and performance benefits of an APP (Atactic Polypropylene) modified asphalt.
Dependo-Weld has a construction that delivers the essential durability and applicability of an APP modified membrane. The design requires less heat with easier workability. The Dependo-Weld mat supplies superior pliability while maintaining the essential tensile properties of polyester allowing for accommodation to normal stresses of rooftop expansion and contraction.
The top of the sheet has a smooth surface. The bottom of the sheet has a printed polyolefin burn-off film to enhance heat welding. Dependo-Weld is intended for use as a modified bitumen component either as a cap sheet in multi-ply commercial or single ply residential applications. Dependo-Weld may be left uncoated or coated with suitable listed coatings. Install Dependo-Weld using heat-welding application techniques.