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Ridge Vents

Ridge vents, such as continuous or intermittent ridge vents or vented head apron flashings, should always be used in conjunction with intake vents at a lower level.

Saturated water vapour can enter the building when commercial ridge vents are subjected to negative pressures or at times of high humidity associated with mist or fog. Such water vapour can form condensation on the structural framework and appear as a leak. Ridge vents without adequate intake vents can also lead to leakage.

 

Sarked Roof to Ridge Vent

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Clause: 
010_010_001_003_000_000_000_000_000
Clause Number: 
10.10.1.3
/cop/internal-moisture/ventilation-pathways#ridge-vents
Revision Category: 
4 - Clause Inserted
Revision Detail: 

Clause renamed and revised for clarity.

Draft Clause: 
009_004_002_000_000_000_000_000_000