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Coxdome Polycarbonate Dome Rooflights (Classic) +150mm Upstand


From 2-3 working days lead time

This item is made to order
All prices are subject to 20% VAT

Custom Size

Manufactured to a high standard with a PVC-u 150mm upstand with double or triple glazing available. The COXDOME fixed dome rooflight for installation on a flat roof. Condensation is prevented from forming by the thermally broken upstand, produced from PVC-u plastic profiles, which safeguards a solid thermal performance for an polycarbonate rooflight.

Available in Clear, Diffused and Opal finishes, the COXDOME classic range can be purchased in sizes between 600mm and 3000mm.

The COXDOME Classic range offers you a unique design, with a high performing polycarbonate roof domes for straightforward installation.

Need more information about our range of dome rooflights and polycarbonate rooflights? Contact our team today for expert advice on how to improve your property with a rooflight installation. You can also view our full range of Coxdome rooflights.

Key Benefits of this Coxdome polycarbonate dome rooflight

  • For high performance, skins available in Double, Triple or Quadruple.
  • Glazing offered in Clear, Diffused or Opal.
  • High Security Fixings supplied as standard
  • PVC-u Upstand
  • Suitable for flat roofs, including single ply, GRP, hot melt, asphalt, liquid and lead
  • Performance:
  • U Value 2.7 for Double Skin / Sound Reduction 20dB
  • U Value 1.7 for Triple Skin / Sound Reduction 22dB
  • U Value 1.4 for Quadruple Skin / Sound Reduction 23dB
  • U Value 1.8 for 150mm PVC-u upstand
  • CE Marking according to EN 1873
  • Class B Non-Fragile, ACR(M)001 Soft Body Tested
  • 3 mm polycarbonate impact resistant glazing
  • B-s1-d0 Fire Classification according to BS EN15301:1 2007
  • COXDOME Classic Rooflight: Manual Opening Polycarbonate Dome

More rooflights

Measuring & Installation Guide

The size you will purchase for this range, is the same size as the structural opening in your roof. For example if your order is for an 800mm by 800mm polycarbonate dome rooflight, your structural opening will need to be built to 800mm by 800mm. When viewing from internally, your visible daylight size would be 600mm by 600mm which is due to the splayed upstand the unit is manufactured with.

The daylight size will be 200mm smaller than the Rooflight size as shown on the below sizing chart.

The roof structure with the upstand and rooflight installed is shown on the below diagram.

Classic range fixing_instructions (Download PDF below by clicking on the icon)

Technical Information

Click on the downloadable link below for the data sheet on the Coxdome classic range rooflights. Please ensure you review this based on the options you’ve chosen above on the drop down menu as this data sheet shows a variety of options available for the product.

Coxdome Trade Classic Range Data Sheet


The manufacturer supplies this product with a 10 year warranty.

Delivery & Lead Time

We currently advise 2-3 working days for the lead time of this product. You will need to please
ensure that sufficient labour is on site to sign for the product and accept delivery.

All sizes are made to order and cannot be returned. Please ensure you’re ordering the correct size
before proceeding with your purchase.


Based on 210 reviews
Bob toploft
Bob toploft
I am the owner of Top loft company ltd, after reviewing reviews from various companies I ordered 2 juliet balconies from tgs arrived within 3 weeks, comunications and help was brilliant. Thanks for all your help.
Jim H
Jim H
Great service from the team. Easy to order, good buying guidance and clear install instructions for my builder. Rooflights look absolutely great! The team at TGS couldn't have been more helpful in organising a smaller delivery vehicle to help with restricted access. Highly recommend TGS.
Jack Smith
Jack Smith
Great service from a very knowledgeable company. Thanks team Toughened Glass Systems.
Paul Smith
Paul Smith
I was spending a lot of money on several rooflights so I wanted to make sure I got it right and I did. The professionalism, expertise and the quality of the roof lanterns really set Toughened Glass Systems apart.
Tyrone Eldridge
Tyrone Eldridge
There are no complaints about the experience with TGS. The entire process of ordering, supplying and delivering was flawless. I would really recommend you order your flat roof sky lanterns from these guys.
Robert Childers
Robert Childers
Best place for rooflights, they supply many different types and options. Thanks for all your support Toughened Glass Systems!
John Smith
John Smith
The glass balustrade gives us an amazing view onto the lake outside. So happy we ended up going for the frameless glass balcony from Toughened Glass Systems instead of one with posts
Louise Newsome
Louise Newsome
My job is to design the interiors for a lot of houses and a lot of times the hardest part was when the client wanted some really inexpensive rooflights that should look like some contemporary ones as well. That until I found Toughened Glass Systems and started working with them more and more. They have a lot of this kind of stuff at a very decent price, a price for anyone I can say. If you’re looking for cheap skylights for flat roofs or any types of roof lights, they probably have something for you.
Krystina Taylor
Krystina Taylor
Always kept us up to date with our order even when delayed by a few days. Great service from the start and good quality glass balcony delivered.