
Williaam Cox Mark 1 Range
The Williaam Cox Mark 1 range is a circular rooflight dome, available in double or triple glazed. It can come with a polyester upstand or can also suit a preformed builder’s upstand.

Williaam Cox Mark 3 Range
The Williaam Cox Mark 3 Range comes in both a square and rectangular shaped rooflight dome. It is available in double, triple or quadruple glazed and can come with a uPVC upstand (height extensions available) or can suit a preformed builder’s upstand. Ventilation options are also available – trickle, manual hinged and electrical hinged.
The Williaam Cox Mark 3 range is also available as an access hatch. Please contact our sales team through the Contact Us page for further information.
- Mark 3 Triple Skin Unvented to Builders Kerb
- Mark 3 Triple Skin Power Linear Opening with uPVC Kerb
- Mark 3 Triple Skin Manual Opening to Builders Kerb
- Mark 3 Triple Skin Fixed with Kerb
- Mark 3 Manual Opening with uPVC Kerb
- Mark 3 Glass Inner Skin Vented to Builders Kerb
- Mark 3 Glass Inner Skin Unvented to Builders Kerb
- Mark 3 Glass Inner Skin Power Linear Opening with uPVC Kerb
- Mark 3 Glass Inner Skin Power Linear Opening to Builders Kerb
- Mark 3 Glass Inner Skin Manual Opening with uPVC Kerb
- Mark 3 Glass Inner Skin Fixed with Kerb

Williaam Cox Mark 3 Renovate Range
The Williaam Cox Mark 3 Renovate Range is a retro-fit dome designed to suit a wide range of existing upstands. It has a 70mm or 100mm flange that enables it to be fitted to existing upstands of varying dimensions. It is available in single, double or triple glazed domes and is ideal for the refurbishment projects or repair work.

Williaam Cox Aluframe Range
The Williaam Cox Aluframe Range is our top of the range rooflight system. The range is based on an insulated uPVC Upstand with triple or quad skin polycarbonate glazing. We can also offer a glass inner to achieve unprecedented levels of thermal performance for rooflights. A superb Part L compliant system, the unit has a unique locking mechanism which is in turn covered with a brushed aluminium cowl (which also has the option of polyester powder coating if required).
- AluFrame Tripple Skin Fixed or Vented with Kerb
- AluFrame Triple Skin Power Linear Opening to Builders Kerb
- AluFrame Triple Skin Manual Opening to Builders Kerb
- AluFrame Inner Glass Skin Fixed or Vented to Builders Kerb
- AluFrame Glass Inner Skin Power Linear Opening with uPVC Kerb
- AluFrame Tripple Skin Fixed or Vented with Kerb
- AluFrame Glass Inner Skin Power Linear Opening to Builders Kerb
- AluFrame Glass Inner Skin Manual Opening with uPVC Kerb
- AluFrame Glass Inner Skin Manual Opening to Builders Kerb
- AluFrame Glass Inner Skin Fixed or Vented with Kerb
- AluFrame Fixed or Vented to Builders Kerb
Can’t find what you’re looking for?
If you would like more information on this or any other Williaam Cox products, or you would like to discuss your specific project requirements contact us today.