Home > Companies > SIG Building Solutions > AS FAIR Rooflights

Factory assembled, insulated, profiled translucent rooflights.

  • Profiles to match Steadmans AS35 insulated panels, allowing in-plane mounting.
  • Suitable for fixing to steel or timber purlins. Centres (maximum): 1.8 m. Wider centres may be possible in certain circumstances - consult manufacturer.
  • GRP skins with optional internal membrane.
  • Choice of grades for fire performance/ impact resistance/ light transmission/ thermal insulation/ UV resistance.
  • Choice of internal fixing point fillers.
  • Pitch (minimum): 6º.
  • Length (maximum): 7 m.


  • Designed for installation simultaneously with profiled steel roofing.
  • For stitching through galvanized steel underlap strip or through Hardpak internal supports, located over purlins, use stainless steel or carbon steel self drilling screws with press on or integral caps and 29 mm EPDM washers.
  • To steel: Should pass through the section, leaving minimum 5 mm exposed thread.
  • To wood: Must achieve 40 mm (minimum) embedment.


Performance, standard unit:

A wide range of alternative assemblies is available to meet project needs.

  • Cover width: 1 m.
  • 60–70 % light transmission.
  • Weathersheet, spread of flame to BS 476-3: SAB.
  • Liner sheet, spread of flame to BS 476-7: Class 1.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-65-60/330 Factory assembled insulating rooflights (FAIRS)

Product specification

An important note about specifying



SIG Building Solutions


+44 (0)161 2310001

Product reference

AS FAIR Rooflights


[40 mm thick]
[60 mm thick]
[80 mm thick]
[100 mm thick]
[Double skin, 3.0 W/m²K]
[Triple skin, 1.9 W/m²K]
As standard.
[Triple skin, 1.3 W/m²K]
[Triple skin, 1.1 W/m²K]
[Triple skin, 0.9 W/m²K]


[GRP 2.4 kg/ m²]
Fragility to ACR(M)001: Class B. Estimated non fragile for 5–20 years.
[GRP 3 kg/ m²]
Fragility to ACR(M)001: Class B. Estimated non fragile for 25 years.

Liner sheet

GRP - As standard.

Internal fixing point fillers

[Hardpak 50 mm]
As standard. Requires tight alignment with purlins.
[Hardpak 100 mm]
Allows limited tolerance to purlin position.
Allows free purlin spacing.

Manufacturer details

3 Stokes Street,
Great Manchester, M11 4QU
Tel +44 (0)161 2310001
Fax +44 (0)161 2311055
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