• Opening Skylight
  • Ventilation Rooflight

Circular Skylights - Ventilated

With the Circular skylights, we have produced a distinctive product of unrivalled design, the smooth edging of the glazing which requires no screwed connections only acts to reinforce this statement. Available with an electric opener or fixed, this is an ideal solution for creating a unique style inside and out.

Manually operated skylight provides up to 280mm of lift for simple yet stylish ventilation. We also offer electric openers. The polycarbonate glazing also provides a means of natural light into the building.

What we offer

We manufacture a range of sizes based in a variety of specifications. Stuck for choice? We recommend the options below to get the most out of your rooflight.

  • Triple Layer (Clear or Opal) Polycarbonate Glazing
  • U-value of 1.8 W/m2K
  • 22 dB Sound Insulation
  • 150mm low profile GRP Upstand

Most Popular Sizes

Product Ref. Structural Opening Size Light Area (m2) Add
0.6.SDC.VN 600 0.18
1.0.SDC.VN 1000 0.50
1.2.SDC.VN 1200 0.79
1.5.SDC.VN 1500 1.33
2.0.SDC.VN 2000 2.54

Bespoke Options

These options are all available on back order. Please expect 6-10 Weeks Delivery for bespoke options.

Request a Quote

Choose your model by clicking the pencil icon () .

  • Circular Ventilated - 600
  • Triple Clear
  • 150mm GRP
  • Manual Spindle
  • None specified

Sizes Available

Click add to sepc to add the size to your quote

Product Ref. Structural Opening Size Light Area (m2) Opener Position Add
0.6.SDC.VN 600 0.18 Opener
0.9.SDC.VN 900 0.38 Single Opener
1.0.SDC.VN 1000 0.50 One Opener
1.2.SDC.VN 1200 0.79 Single Opening
1.5.SDC.VN 1500 1.33 Tandem
1.8.SDC.VN 1800 2.01 Tandem
2.00.SDC.VN 2000 2.54 Tandem Opener


Double Layers

Double Polycarbonate Layer

Provides U-value of 2.7 W/m2K for unheated buildings and garages.

Triple Layers

Triple Polycarbonate Layer

Provides a U-value of 1.8 W/m2K for heated buildings and halls.

Quad Layers

Quad Polycarbonate Layer

Provides a U-value of 1.5 W/m2K for offices and residential buildings.

Thermally Insulated

thermally insulated layer

Provides a U-value of 1.0 or 0.83 W/m2K depending on lighting requirements.

Opaque Thermal

Opaque Thermal dome

Limits light transmission to provide U-value of 0.61 W/m2K



Reflects infrared light and heat radiation.


150mm GRP

GRP 150 Upstand

Provides a U-value of 0.8 W/m2K

300mm GRP

300mm GRP Upstand

Provides a U-value of 0.8 W/m2K

500mm GRP

500mm GRP Upstand

Provides a U-value of 0.8 W/m2K for heated buildings and halls.


Electric 300mm Basic

Basic electric opener

Lift height 300mm, maintenance-free, automatic shut-down in limit position.

Electric 300mm

Electric Opener 300mm

Lift height 300mm, quality aluminium housing, splash-water protected.

Electric 500mm

Electric Opener 500mm

Lift height 500mm, automatic mechanical locking in limit position.


Pneumatic Opener

Lift height 300, 500, 750mm, automatic mechanical locking in limit position.


Manual Opener

Lift height 280mm, galvanised steel/brass sliding spindle, hand crank rod (170cm).

Electric Chain

Electric Chain Opener

Lift height 300, 500, Twin 500mm, cable can be integrated into the upstand.


Fall Protection

Fall Through Protection

Protects against falling through a rooflight. Grid made from galvanised sheet steel powder coated in any standard RAL Colour.

Intruder Protection

Intruder Protection

Protects against fall through or burglary access. Made of resistant mesh inserts in steel alloys. Fits Surespan and all other upstands.

Light Shaft

Intruder Protection

For an even greater design aesthetic these GRP light shafts create vertical light wells to 600 or 1000mm in height.

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