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Em-Dome in opal diffused with Em-Collar and hinged opener
Em-Dome in HeatReflect finish with PVC 300mm upstand and rotating vents
Permanent trickle
Permanent ventilation is provided by means of spacer washers inserted in the Em-Dome fixings.
This provides a continuous 5 to 10mm weatherproof vent around the perimeter of the rooflight which suits areas such as corridors and other areas where non-controllable background ventilation is required.
Fitted to Em-Curb
Fitted to builder’s curb
Controllable trickle
Controllable trickle ventilation is an adjustable slot vent which is fitted to two or four sides of a PVC Em-Curb, Em-Collar or T-Collar.
With the vents on two sides the unit can provide 8000mm² ventilation area which assists with Building Regulations compliance.
Fitted to Em-Curb
Fitted to builder’s curb
Controllable rotating
Controllable rotating vents are a fully insulated unit with enhanced thermal properties and a greater vent area than the Trickle Vent options.
The vents can be fitted to two or four sides of a PVC Em-Curb or Em-Collar. With the vents on two sides, the unit will provide a minimum of 11,000mm² ventilation area. This increases with the size of the rooflight. Tested and certified according to EN 1873 – Watertightness.
Fitted to Em-Curb
Fitted to builder’s curb
Hinged manual spindle opening
Hinged opening vents provide the maximum ventilation area to allow rapid air movement.
The manual spindle operation can be opened to any point up to 300mm and is operated by a Winding Rod available separately. Tested and certified according to EN 1873 – Watertightness.
Fitted to Em-Curb
Fitted to builder’s curb
Hinged electric actuator opening
Hinged opening vents provide the maximum ventilation area to allow rapid air movement.
The electric actuator operation allows control by a wall mounted open/close switch and also options for wind, rain and temperature sensors with a range of control panels available separately. Actuators are either 24V DC or 230V AC with options to open to 400 or 600mm.
Fitted to Em-Curb
Fitted to Em-Collar
Powered ventilation
Where natural ventilation is insufficient, Em-Domes can be supplied with Vent Axia Solo or Centrif Duo centrifugal extract fans. These are mounted in the side wall of Em-Curb PVC-u 150/v or Em-Curb PVC-u 300/s.
These high performance extract fans are specifically designed for ventilating internal bathrooms, WCs and other small rooms. They have an extract performance of 85 m³/hr (24 l/s) or 220 m³/hr (61 l/s) respectively and can be fitted in one or more sides. Where greater air movement is required, white PVC lined fan collars with pre-cut apertures are available to enable fitting of larger axial fans (e.g. Vent-Axia T-series).
This allows either new high capacity fans to be installed or existing fans to be reinstalled through the rooflight unit.
Fitted to Em-Curb
Fitted to Em-Collar
