Roll Out Rafter trays are a simple but effective way of preventing loft insulation from being pushed up to the underside of the roofing underlay and will maintain a clear ventilation path into the roof void from the eaves. The rafter trays will be suitable for 10,000 mm2/m or 25,000 mm2/m continuous eaves ventilation. PropertiesLength: 6m.Width: 300mm.Height: 55mm.Weight: 8.4kg per pack.Material: black PVC. InstallationThe roll out trays are rolled out over the rafters in the correct position to provide a clear ventilation channel above the roof insulation and fixed into the rafters using corrosion-resistant clout head nails or staples. For low pitched roofs two trays may be joined together and if using soffit ventilation the bottom edge of the tray must be kept a minimum 25mm from the back of the fascia board. ApplicationSuitable for:600mm rafter centres.New build and re-roofing applications.Roofing pitches above 12.5 degrees.