water tightness

[EN 12792:2003, 397]:ability of an externally mounted air transfer device to resist water penetration.NOTE It is observed in the conventional conditions of a standard.

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weatherstripping

[AIVC, Air infiltration and ventilation glossary, 1992]:a) The fitting of a strip of flexible material to seal a joint between a movable component and its seating of the application of mastic sealants to seal infiltration openings. The strip is attached Continue reading →