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COXDOME Pyramid Rooflight For Flat Roofs


Free delivery, 7 working days
(Except the size: 1000x1500mm – these require 5-7 days delivery).

Coxdome polycarbonate Pyramid Rooflight for a 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 strong thermal properties and resilience to condensation formation.

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SKU: COX.PR Categories: ,


Coxdome Pyramid Rooflight for flat roof features 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 rooflight domes are thermoformed 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

Pyramid Rooflight – Performance

  • 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)


Glazing Light Transmission 'G' Value 'U' Value Sound Reduction (dB) Fire classification Impact
double-profile Clear 77% 67% 2.6 W/m²K* 20dB 1-3mm: B-s1-d0 > 200 N/mm2
Diffused 77% 67% 2.6 W/m²K* 20dB 1-3mm: B-s1-d0 > 200 N/mm2
triple-profile Clear 71% 57% 1.7 W/m²K* 22dB 1-3mm: B-s1-d0 > 200 N/mm2
Diffused 71% 57% 1.7 W/m²K* 22dB 1-3mm: B-s1-d0 > 200 N/mm2



Height Material Profile Width 'U' Value Fire Resistance
sf15 150mm PVC-u 25mm 1.8 W/m2K D-s3-d1


Coxdome upstand

Additional information


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


Double, Triple

Layer Variant



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