Vented Eaves Protection NO Bird Stop

Vented Eaves Protection NO Bird Stop
OFVS
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Ubbink vented eaves protection system sold in 900mm lengths NO bird stop for use with flat tiles or natural slates

Click Here For Specification Sheet

Over Fascia Ventilating System (OFVS)

Function:

OFVS10 and OFVS25 Over Fascia Ventilating System for tiled roofs to provide:

1. Eaves level roof void ventilator.
2. Hinged underlay support.
3. Bird excluder.
4. Tile clipping (clip extra).
5. Insect Inhibitor.
6. Drip into gutter.

OFVS10/L and OFVS25/L Over Fascia Ventilating System for slate roofs (including interlocking slates and plain tiles) to provide:

1. Eaves level roof void ventilator.
2. Hinged underlay support.
3. Insect Inhibitor.
4. Drip into gutter.

Complies with the requirements of Part F2 of the Building Regulations 1995 and the recommendations of BS 5250: 1989 for eaves level ventilation in slate and tiled roofs over 15° pitch.

Material:

Polypropylene

Free Vent Area:

OFVS10 and OFVS10/L:
Equivalent to 10mm continuous opening.

OFVS25 and OFVS25/L:
Equivalent to 25mm continuous opening.

Colour:

Black

Range:

There are 4 types of OFVS strip available details of their general characteristics, ventilation capacity and usage are as follows:

PRODUCT CODE	VENTILATION	ROOF FINISH
OFVS1O*	10mm continuous	Profiled Tiles
OFVS1O/L	10mm continuous	Flat Tiles and Slates
OFVS25*	25mm continuous	Profiled Tiles
OFVS25/L	25mm continuous	Flat Tiles and Slates
*These items have integral bird excluder

Roof Pitches: 15° to 70°.

Note: Below 23° additional support may be needed for the support flap to prevent ponding.

Effective Length:
OFVS10 and OFVS10/L 900mm.
OFVS25 and OFVS25/L 480mm.

Movement Allowance: ± 5.5mm/unit.

Fixing:

Installation by the roofer in new build and re-roofing work to slated and tiled roofs from 15° to 70° pitch.

Note: Take extra care to prevent pooling below 23°.

Nailing:
3.35mm diameter 65mm long galvanised steel nails at 200mm centres (ring shank nails; Scotland and N Ireland). For roofs with ridges over 7.2m and in areas of high exposure, calculate fixings in accordance with BS 5534.

Jointing:
The system's components have interlocking joints for forming continuous straight lines. Mitre the strips at hips and valleys. At inner valley joints, fix over a separate flashing extending at least 150mm on each side of the joint.