OTTOTAPE D 25I Duct - The adhesive film tape for vapour retarders and vapour barriers. Characteristics: Single-• sided adhesive foil tape • With laid scrims, tape stretchable in cross direction • Thick adhesive layer (220 g/m²) • Processing temperature up to -10 °C • Very strong adhesive force on all rough substrates • Ageing resistant • Very low vapour sensitivity. Fields of application: • Sealing of ducts on chimneys, ventilation pipes, beams etc. • For a permanently airtight sealing in compliance with DIN 4108-7 • Overlapping bonding of vapour retarders, vapour barriers and insulating materials according to DIN EN 4108-7 • Joint bonding on wood panels • Not suitable for sauna and swimming pools. Standards and tests: • For applications in low-emission buildings according to TOXPROOF (TÜV Rheinland Produkt und Umwelt GmbH, Germany).