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VENTILATION Skylight for Flat Roof


Flat Roof Ventilation Skylight are fitted with a 280mm manual spindle (with 1700mm hand crank rod) or a 300mm Electric opener (for sizes above 1200 x 1800). This offers a natural ventilation system ideal for supplying passive fresh air as well as light to create a comfortable working environment.

Sold with triple layer glazing and a 150mm PVC upstand to ensure optimal thermal performance during colder spells. Factory assembled and delivered to site for installation.

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Shipping cost: £25 (£30 inc. 20% VAT).
Free Delivery on orders over £500.


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These high-quality Flat Roof Ventilation Skylight feature a modern, stylish aesthetic which has been designed from the ground up to provide easy installation as well as high performance. Designed with a modular structure allowing a variety of configurations, the thermally broken frame manufactured from plastic profiles ensures a strong thermal performance and resilience to condensation formation.

Our Roof Domes are sold with high quality triple layer Polycarbonate (PC) Glazing and a 150mm thermally broken PVC Upstand. This also ensures the products meet the relevant building regulations including Part L 2013.


  • Triple Layer Polycarbonate (PC) Lid
  • PVC Upstand
  • Clear or Opal diffused layers


  • U Value 1.8 W/m²K based on standard triple layer
  • PVC Upstand U-value 1.1 W/m²K
  • Sound reduction 22dB

Dimensions (Ventilation area)

  • 600 x 600 (0.18m2)
  • 600 x 900 (0.30m2)
  • 900 x 900 (0.43m2)
  • 900 x 1200 (0.52m2)
  • 1000 x 1000 (0.492)
  • 1200 x 1200 (0.61m2)
  • 1200 x 1800 (0.79m2)

Light Performance

DimensionVentilation Area
300mm Stroke m²
Total U-Value (Inc Upstand)
600 x 6000.181.43
600 x 9000.301.47
900 x 9000.431.49
1000 x 10000.491.54
900 x 12000.521.55
1200 x 12000.611.58
1200 x 18000.791.61

Additional information


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