Insulation R22 + Radiant Barrier + Vapor Barrier + Air Barrier all in one product! One solution for heat, cold and condensation. Works great in hot and cold climates. Prodex Total 10M Plus material has cuts at the edge to overlap the rolls. Use a hot air gun to melt the polyethylene foam at both rolls. Add a little hand pressure and you have a complete welding process. This Thermal welding allows Prodex Total 10M to have a totally impermeable overlapping and mechanical seal between installed rolls.