Best Price Guarantee
Best Price Guarantee We will never be beaten on price
Nationwide UK Delivery
Nationwide UK Delivery Fast Delivery Nationwide UK
Designed & Manufactured
Designed & Manufactured in the UK
See all Products

Circular Rooflights


Delivery 3-5 working days lead time if purchased without kerb (10 working days if purchased with GRP Kerb). Please Ensure Sizes Ordered Are Correct – Sizes Cannot be Changed Once The Order Is Processed.

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

Custom Size
UK mainland delivery
Single pane of glazed unit with no bars in-between
Exceptional U values
Laminated inner glass pane for extra safety to prevent injuries.
Price match guarantee for like products 
Factory sealed units and aluminum frame
Thermally broken construction ensures no cold bridging
Custom made sizes at extra cost

What is a circular rooflight?

Circular rooflights are windows placed on a roof that are designed in a circular shape. They’re generally installed on flat or pitched roofs, and are a great way to increase natural light in the room below. 

Circular rooflights are used increasingly by architects to create visual impact in modern interior spaces. Brett Martin Circular Glass is a premium round rooflight specified for its distinct styling and is available in a range of sizes for mounting to builder’s upstand or complete with pre-fabricated kerb. This contemporary glazing unit gives a clean internal appearance, a minimal unobtrusive exterior and allows daylight to spread evenly through an interior space.

What are the benefits of a circular rooflight?

Our stunning circular skylight features a clean design that’ll catch the eye and brighten up your space. The circular shape offers a nice twist on the design of a usual rooflight, meaning your home or building is sure to look unique. Some key benefits of our circular rooflight include:

  • Increased natural light
  • A more energy efficient building – learn more about energy efficiency rooflights
  • Visually stunning
  • Add value to your home
  • A range of sizes to suit your needs
  • Made with quality materials
  • Built to last

Our circular rooflights for flat roofs are expertly crafted and affordably priced, representing fantastic value for money.

What buildings can utilise circular rooflights?

Circular rooflights are a popular choice for modern architecture, as they provide a unique and aesthetically pleasing design feature that can enhance the overall look and feel of a building. You may recognise them in museums or art galleries, and they provide a striking look that enhances the overall appearance of the room below. Bring a stunning contemporary aesthetic to your home or office with one of our circular rooflights today.

What sizes are available in our circular skylights?

Our circular rooflights are available in the following diameters:

  • 600mm
  • 900mm
  • 1200mm
  • 1500mm

More rooflights

We sell a range of rooflights and skylights, including:

Measuring & Installation Guide

If you’re purchasing a 1200mm diameter rooflight from the website to be installed on your own upstand, then the external upstand dimensions should be 1200mm in diameter. If you choose the option to purchase with a GRP kerb and the size you purchase is 1200mm then your structural opening should be 1200mm.








Technical Information

  • Modern and stylish circular flat glass rooflight design 
  • Elegant aluminium frame powder coated to RAL 7016 
  • Ur Value as low as 1.16 W/m2K 
  • Safety of those below the rooflight assured thanks to a laminated inner pane 
  • Tested to be non-fragile to CWCT TN-67 for class 1 roofs and Class B non-fragile to ACR[M]001 when new and fully installed to Brett Martin Daylight Systems installation guides 
  • Available in a range of sizes, with 4 standard fixed sizes 
  • Suitable for mounting direct to a builder’s upstand, or with robust insulated GRP kerb for new build and refurbishment applications.


The product is supplied with a 10 year warranty.

Delivery & Lead Time

We currently advise 3-5 working days for the lead time of this product if purchased without a kerb or 10 working days if purchased with a GRP Kerb. 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.