Vent Card SFD300 is a 300mm × 1200mm corrugated ventilation spacer card, used to maintain the 50mm ventilated airgap between roof felt and insulation required under NSAI Agrément Certificate installation conditions when spray foam is applied directly to rafters.
Fitted between the rafters before spraying, it protects the roof’s breathable membrane from direct contact with the foam while preserving a continuous ventilation path connected to eaves-level ventilation.
