EXPANSION TAPE is a compressed swelling tape for storm-resistant sealing, with a polymer impregnation for long-term stability. The BG1 classification of EXPANSION TAPE guarantees complete wind and water tightness (driving rain) up to wind force 11 at a building height of 100 metres. In addition, EXPANSION TAPE is almost completely vapour permeable (Sd-value 0.5), which corresponds to current building requirements. Due to its slow expansion, the tape can be applied from the roll. EXPANSION TAPE can be painted or plastered, but is itself UV and weather resistant.