Over Fascia Vent 300mm

• Very unobtrusive and easy to fit
• Superior strength construction – will carry the weight of the bottom row of tiles
• 4mm wide slots comply with BS 5250: 2021
• Durable and totally resistant to decay
• UV stabilised and colourfast

• Satisfies all NHBC requirements 
• Manufactured to BS EN ISO 9001 and BS EN ISO 14001
• Complies with all relevant Building Regulations 
• Meets all relevant British Standards

• Manufactured by injection moulding in high density polypropylene.
• Available in black or white.

Over fascia ventilator 300mm (10mm airflow) 

G20 Carpentry/Timber Framing/First Fixing 

Clause 910^ EAVES SOFFIT VENTILATION 

• Manufacturer: Timloc Building Products, Timloc House, Ozone Park, Howden, East Yorkshire, DN14 7SD. T: 01405 765567 W: www.timloc.co.uk 
• Product Reference: 3011 
• Type: Over Fascia Ventilator (300mm) 10mm Airflow
• Colour: (Black or White) 
• Airway: Provide the equivalent of a continuous opening of not less than 10mm for the full length of eaves

Over fascia ventilator 300mm (25mm airflow) 

G20 Carpentry/Timber Framing/First Fixing 

Clause 910^ EAVES SOFFIT VENTILATION 

• Manufacturer: Timloc Building Products, Timloc House, Ozone Park, Howden, East Yorkshire, DN14 7SD. T: 01405 765567 W: www.timloc.co.uk 
• Product Reference: 3011-25 
• Type: Over Fascia Ventilator (300mm) 25mm Airflow 
• Colour: (Black or White)
• Airway: Provide the equivalent of a continuous opening of not less than 25mm for the full length of eaves

• Use product 3011 to ventilate pitched roofs, where the pitch of the roof is 15 degrees or more, and the roof void is attic or loft space.
• Use product 3011-25 to ventilate pitched roofs, where the pitch of the roof is less than 15 degrees, flat roofs, or any roof where living accommodation is contained within the roof space.
• Make sure each ventilator is fixed securely into the top of the fascia board using at least three screws or nails per ventilator.
• On pitched roofs it is advisable to provide a felt support above the fascia ventilator, projecting at least 10mm beyond the front of the ventilator. This will prevent the felt from sagging behind the fascia board and will maintain a clear air path at the front.
• When ventilating flat roof abutments with 3011-25 extra joinery work is essential – please consult the Timloc Technical Department
• 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.

• Determine whether the roof design requires ventilation equivalent to a continuous 10mm opening (3011), or 25mm opening (3011-25).
• Specify which colour is preferred.
• Measure the overall length of the eaves to be ventilated and divide by 300mm to determine the number of lengths required.

Over fascia vent – Product 3011
Provides ventilation equivalent to a continuous 10mm opening (10,000mm2 per metre run)

Over fascia vent – Product 3011-25
Provides ventilation equivalent to a continuous 25mm opening (25,000mm2 per metre run).

Both products are supplied in 300mm lengths.