The Uzone roofing system is made to the highest engineering standards, and offers advanced thermal insulation properties. The thermal sleeving of glazing bars and the ridge body keeps internal surfaces warm, reducing heat loss from the conservatory. The Invertabar glazing bars keep the majority of the glazing bar internal to the conservatory, considerably reducing conductive heat loss, as well as adding more pleasing lines to the exterior roof. The patented built in stack vent allows warm moist air to escape, virtually eliminating condensation.