Home > Companies > Alu Roofing > Lomanco Turbine BIB8

8" diameter aluminium ventilation turbine suitable for flat and pitched roofs.

Features and benefits:

  • Extends the life of the roof structure by exhausting damaging heat and moisture from attic/ loft space.
  • Wind powered turbine maximizes ventilation capacity while geared towards going green.
  • Can reduce energy bills and the likelihood of winter ice build-up.
  • Permanently lubricated upper and lower ball bearings for long life and no maintenance.
  • All-aluminium, rust-free construction.
  • Rigid spider-type structure.
  • Large flashing for ease of installation.
  • Turbine head and base can be used separately.
  • Tested to withstand winds of 110 mph.
  • Square base adjusts to a roof pitch of 0–27°.
  • Includes roof pitch bevel to help determine roof pitch.
  • 18 air-foil curved vanes with rolled vane edges to deflect water.
  • 12" and 14" models also available.
  • Lifetime transferrable warranty for residential use (15 year-warranty for commercial use); two-year warranty on all accessories.


  • Roofs - flat and pitched.
  • Ventilation shafts within tower blocks.
  • Attics/ loft spaces.
  • Stores.
  • Production plants.
  • Cellars.


  • Base.
  • Adjustable neck.
  • Reinforced turbine head (8", 203 mm).
  • Roof pitch bevel.
  • Screws/ fixings.

Standard product features

Colour/ finish:

Anodized aluminium.


- Turbine:

  • Height: 360 mm.
  • Diameter: 320 mm.

- Neck/ base:

  • Neck height: 195 mm.
  • Neck diameter: 203 mm.
  • Base width: 400 mm).


1.319 kg.

Ventilation characteristics:

- By ventilated area:

  • 0–90 m²: Three units required.
  • 90–140 m²: Six units required.
  • 140–185 m²: Nine units required.
  • > 185 m²: 12 units required.

- Exhausted air rate:

  • Wind speed 8 km/h: 165 m³/h.
  • Wind speed 13 km/h: 295 m³/h.
  • Wind speed 24 km/h: 565 m³/h.



- Electromechanical regulation flaps:

  • Material: Galvanized steel.
  • Allows for control of the amount of air exhausted directly below the turbine. This is an indirect control of the turbine, reducing exhausted air.
  • Two positions: Closed or open.
  • Not supplied with fitted cabling and switches.
  • Flap height: 230 mm (8" diameter version).

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-20-75/365 Rotary roof ventilators

Product specification

An important note about specifying



Alu Roofing


+44 (0) 7747 797955

Product reference

Lomanco Turbine BIB8


[Base for extension parts]
Galvanized steel; suitable for flat roofs.
[Electromechanical regulation flaps, electric]
See 'Options' for details.
[Electromechanical regulation flaps, mechanical]
See 'Options' for details.
[Extension part, 500 mm-high]
Galvanized steel.
[Extension part, 1000 mm-high]
Galvanized steel.
[Universal base, black]
Aluminium; suitable for profiled metal roofs and tiled roofs.
[Universal base, brown]
Aluminium; suitable for profiled metal roofs and tiled roofs.
[Universal base, red]
Aluminium; suitable for profiled metal roofs and tiled roofs.

Manufacturer details

27 Berkeley Road,
Trowbridge, BA14 9DX
Tel +44 (0) 7747 797955
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