Home > Companies > Alu Roofing > Lomanco Turbine BIB14

14" 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.
  • Tested to withstand winds of 110 mph.
  • Vari-pitch base adjusts to a roof pitch of 0–45°.
  • Includes roof pitch bevel to help determine roof pitch.
  • 21 air-foil curved vanes with rolled vane edges to deflect water.
  • Moves up to 37% more air than the 12" model.
  • 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 (12", 305 mm).
  • Roof pitch bevel.
  • Screws/ fixings.

Standard product features


- Turbine:

  • Height: 270 mm.
  • Diameter: 460 mm.

- Neck

  • Height: 255 mm.
  • Diameter: 356 mm.

- Base:

  • Opening: 335 mm.
  • Height: 30 mm.
  • Width: 560 mm (opening to flat edge: 100 mm).


1.885 kg.

Ventilation characteristics:

- By ventilated area:

  • 0–185 m²: Two units required.
  • > 185 m²: Three units required.

- Exhausted air rate:

  • Wind speed 8 km/h: 710 m³/h.
  • Wind speed 13 km/h: 1200 m³/h.
  • Wind speed 24 km/h: 2250 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: 400 mm (14" 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 BIB14


[Anodized aluminium]
[RAL 6022 Khaki]
[RAL 8017 Brown]
[RAL 9005 Black]
[RAL 9010 White]


[Base for splitter or 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.
Galvanized steel; connects two turbines to one outlet. Total height: 680 mm.
[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
NBS Plus
NBS National BIM Library