Roof ventilation #2: Comparing rates of corrosion in vented and unvented roof cavities

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Roof ventilation #2: Comparing rates of corrosion in vented and unvented roof cavities research summary Roof ventilation #2: Comparing rates of corrosion in vented and unvented roof cavities PDF / 1.2MB

BRANZ investigated the difference in rates of corrosion in steel in vented and unvented roof spaces. Comparative testing showed that passive ventilation in roof cavities in New Zealand is unlikely to impact the long-term performance of galvanised metal fixtures in these spaces.