High insulation requirements and changes in construction practices have produced increased condensation in the roofspace.  This has led to the introduction of mandatory requirements for ventilation  in the roof. The Dreadnought Ventilation systems are discrete and integrate seamlessly with the tiles and do not disturb the design of the roof.  The ventilation products not only match the colour of the tiles, but also lie flush with the tiling or the ridge line. This is a discreet ventilator flush with the roof and designed to blend in to the rest of the roof.  Sections of Dreadnought tiles are bonded to the leading edge of the tilevent in the same colour as the tiles on the rest of the roof to match in.  It provides 7500mm2 of ventilation per tile vent and can be used with a pipe adaptor for joining to soil pipe or bathroom/kitchen extractor.