The most efficient and effective method of controlling condensation is to provide natural roof space ventilation and to mechanically extract high levels of water vapour at the source. The Wienerberger Sandtoft range of ventilation products provides cost effective and discreet roofspace ventilation. Products include eaves ventilators, concealed tile, ridge ventilators, top abutment ventilators and gas ridge vent terminals. We also offer a range of ridge and tile ventilators for connection to soil vent pipes and mechanical extraction pipes. Sandtoft over fascia ventilation provides continuous free vent areas of 25,000 mm². The over fascia ventilation strip provides effective resistance to large insects and driving rain. The underlay support tray prevents sagging of the underlay behind the fascia and eliminates the problem of long-term deterioration of the underlay at the eaves. The Sandtoft eaves ventilation system is available in 6 metre packs and the bird comb filler is available separately to suit profiled tiles. Specifications Length: 6mWidth: 25mm