Over Fascia Ventilation System

Efficient and durable single product multi-function primary roof ventilation system supplied in 1m lengths. Combining eaves protector, felt support and over fascia eaves vent in one convenient and easy to install unit. Available with or without integral eaves comb filler.

Provides ventilation equivalent to a continuous 10mm opening (10,000mm² per metre run) and is used to ventilate pitched roofs where the pitch is >15° and the roof void is uninhabited loft or attic space.


  • For roof eaves 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

Add this product to your specification on NBS or SpecifiedBy

Product Information

Roofline Over Fascia Ventilation System

Free AirflowLengthEaves CombProduct CodePack Quantity
10,000mm² per meter1m Yes3014C10
10,000mm² per meter1mNo301420

  • Provides ventilation equivalent to a continuous 10mm opening (10,000mm2 per metre run) and is supplied in 1m lengths
  • Efficient, very unobtrusive and easy to fit
  • Superior strength construction – will carry the weight of the bottom row of tiles
  • Performs several functions in a single product – over fascia ventilator, felt support/eaves protector and eaves comb filler
  • 4mm wide ventilation slots comply with BS 5250: 2011
  • Durable and totally resistant to decay
  • UV stabilised and colourfast
  • Supplied in convenient 1m lengths
  • Satisfies all NHBC requirements
  • Manufactured to BS EN ISO 9001 and BS IN ISO 14001
  • Complies with all relevant Building Regulations
  • Meets all relevant British Standards
  • Manufactured by injection moulding in high density polypropylene.
  • Available in black only.
  • Use to ventilate pitched roofs, where the pitch of the roof is 15 degrees or more, and the roof void is attic or loft space
  • Make sure each ventilator is fixed securely into the top of the fascia board using screws or nails through the fixing holes provided
  • Products designed so that the roofing felt will be cut back flush with the edge of the fascia board, and not dressed out into the gutter
  • 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
  • Specify product code with C if integral eaves comb filler is needed.
  • Measure the overall length of the eaves to be ventilated and divide by 900mm to determine the number of ventilators required.

Over fascia ventilation system 900mm (10mm airflow) 

G20 Carpentry/Timber Framing/First Fixing 


  • Manufacturer: Timloc Building Products, Timloc House, Ozone Park, Howden, East Yorkshire, DN14 7SD. T: 01405 765567 W: www.timloc.co.uk 
  • Product Reference: 3014C or 3014
  • Type: Over Fascia Ventilation System (900mm) 10mm Airflow 
  • Colour: Black 
  • Airway: Provide the equivalent of a continuous opening of not less than 10mm for the full length of eaves

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