Meets the new DIN 18542:2020 MF1 requirements. Performs all 3 levels of the SWS professional joint sealing system in one single product: driving rain tight up to 1050 Pa on the outside, good thermal and acoustic insulation in the middle and airtight on the inside of the joint. Ensures a durable, long-lasting seal for external joinery on multiple levels.  Sealing of dilatation and expansion joints, sealing of the connection joints between doors or windows and the wall, acoustic insulation of joints.