Multifunctional tape with barrier membrane, BG1 or BGR and MF1/MF2 tested according to DIN18542, B1 DIN4102, min. 750 Pa driving rain proof, -30°C to 80°C.Advantages: denser inside than outside MF1/MF2.One tape for the joint, fast installation, flame retardant, high sound insulation, permanent joint drying, permanently elastic, UV-resistant.Color: Black / Red (side inside)