1mt Over Fascia Vent Black 25mm Airflow
Efficient and durable primary roof ventilator supplied in convenient 1 metre lengths and available in black and white.
The Over Fascia Vent is used where the fascia board is fitted in the ends of the rafters, so creating a situation where ventilation can only be effected over the top of the board
fitted to the top of the board
felt is fixed to the rafters and over the top of the fascia vent.
OF1 provides ventilation equivalent to a continuous 10mm opening (10,000mm²) and is used to ventilate pitched roofs of 15°> and the roof void is uninhabited loft or attic space.
OF2 provides ventilation equivalent to a continuous 25mm opening (25,000mm²) and is used to ventilate pitched roofs of <15°, flat roofs or any roof where living accommodation is contained within the roof space.
Suitable for new build and refurbishment situations.
Supplied in 1 metre lengths.
Features & Benefits
Efficient, very unobtrusive and easy to fit
Suitable for new and existing projects
Supplied with guidance fixing holes for secure installation
Superior strength construction - will carry the weight of the bottom row of tiles
3.5mm - 4mm wide ventilation slots comply with BS 5250:2011
Durable and totally resistant to decay
UV stabilised and colourfast
Supplied in convenient 1m lengths
Applications
Roof eaves ventilation:
for flat roof abutment ventilation
on roofs where the eaves incorporate a fascia board
on roofs which do not incorporate a soffit board, or where an unbroken soffit board is required.
OF1 provides ventilation equivalent to a continuous 10mm opening (10,000mm²) and is used to ventilate pitched roofs of 15°> and the roof void is uninhabited loft or attic space.
OF2 provides ventilation equivalent to a continuous 25mm opening (25,000mm²) and is used to ventilate pitched roofs of <15°, flat roofs or any roof where living accommodation is contained within the roof space.
Technical Information
Ventilation must be provided for the full length of the eaves and along both sides of the building to create a cross flow ventilation action
3.5mm - 4mm wide ventilation slots comply with BS 5250:2011