How to Install ISOVER Vario Airtightness & Moisture Management System

The ISOVER Vario System is an intelligent airtightness and moisture control system.
This airtightness and moisture control system comprises of a range of intelligent membranes, tapes and sealant. It adapts to the climate and protects your building against moisture and dampness, inside and out. Airtightness also protects the building fabric against damage, helping to maintain its appearance and extending the building’s life.
Learn more here: www.isover.ie/...

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What is the difference between Vario KB1 and American Duck type. ?