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COXDOME Pyramid Roof Light


Coxdome polycarbonate pyramid skylight for flat roof is manufactured to a high standard with double or triple glazing and a 150mm PVC Upstand. The thermally broken upstand manufactured from PVC plastic profiles ensures a strong thermal properties and resilience to condensation formation.

All pyramid domes are thermaformed to a 30° angle and are available with 150mm Upstands.

Coxdome rooflights are leading the way in terms of quality and price. These flat roof fixed rooflights are available in clear or opal variants. Available in various sizes up to 1200 x 1200mm in stock for immediate dispatch.
Thermal performance of Triple Layer dome: 1.8 W/m²K

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Coxdome pyramid skylight for flat roof feature a universal design which provides 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.

All pyramid domes are thermaformed to a 30° angle and are available with 150mm Upstands.

For effective heat insulation our triple glazed fixed roof lights have a U-value of 1.8 W/m²K, the Glazing is constructed from double or triple layer Polycarbonate plastic which meets Part L 2013 requirements.

NOTE: Structural opening for this rooflight is the size of the rooflight. i.e 600x600mm rooflight = structural opening of 600x600mm

Custom Sizes

We offer over 30 different sizes available for back order in a wide variety of options.



  • 3mm Polycarbonate impact resistant glazing
  • UV Stable PVC-u white upstand
  • High impact resistant PVC-u
  • Double or Triple Layer
  • Clear or Opal diffused layers
  • Thermaformed to 30°
  • Excellent waterproofing properties
  • Suitable for flat roofs, including single ply, GRP, hot melt, asphalt, liquid and lead


  • High Security Fixings as standard
  • U Value 1.7 W/m²K based on triple layer
  • 150mm PVC Upstand U-value 1.8 W/m²K
  • Sound reduction 22dB
  • CE Marking according to EN 1873
  • Class B Non-Fragile, ACR(M)001:2005 Soft Body Tested
  • TP(a) Classification (only achievable with minimum 3mm polycarbonate
  • B-s1-d0 Fire Classification according to BS EN15301:1 2007


    • 600 x 600mm (structural opening 600 x 600mm)
    • 800 x 800mm (structural opening 800 x 800mm)
    • 900 x 900mm (structural opening 900 x 900mm)
    • 1000 x 1000mm (structural opening 1000 x 1000mm)
    • 1000 x 1500mm (structural opening 1000 x 1500mm)
    • 1200 x 1200mm (structural opening 1200 x 1200mm)


GlazingLight Transmission'G' Value'U' ValueSound Reduction (dB)Fire classificationImpact
double-profileClear77%67%2.6 W/m²K*20dB1-3mm: B-s1-d0> 200 N/mm2
Diffused77%67%2.6 W/m²K*20dB1-3mm: B-s1-d0> 200 N/mm2
triple-profileClear71%57%1.7 W/m²K*22dB1-3mm: B-s1-d0> 200 N/mm2
Diffused71%57%1.7 W/m²K*22dB1-3mm: B-s1-d0> 200 N/mm2



HeightMaterialProfile Width'U' ValueFire Resistance
sf15150mmPVC-u25mm1.8 W/m2KD-s3-d1


Coxdome upstand

Additional information


600 x 600, 800 x 800, 900 x 900, 1000 x 1000, 1000 x 1500, 1200 x 1200


Double, Triple

Layer Variant



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