Framed Flat Skylights

First 9 sizes listed can be delivered within 2-3 working days. Please Ensure Sizes Ordered Are Correct – Sizes Cannot be Changed Once The Order Is Processed. 3000 by 1800 and and 2000mm by 2000m are the biggest size we can currently supply.

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

Toughened Glass Systems framed flat rooflight is priced competitively without compromising on quality. Boasting a centre pane U-value of 1.1 W/m2K the rooflight we supply is one of the most thermally efficient double-glazed roof lights available.

Unlike other competitors rooflights which are supplied with bottom pane 6mm toughened glass, this product comes with a 6.4mm minimum inner laminated glass. For larger rooflights the inner pane will be 9.5mm or 11.5mm lami. Laminated panes are produced by bonding a film, or interlayer between two or more plies of glass. Upon fracture, the interlayer holds the broken shards of glass, preventing injury to those immediately below the rooflight. Toughened glass would shatter into thousands of prices risking injury to those below the rooflight. Use of laminate glass on the bottom which we supply makes our rooflight product much safer compared to toughened glass only on the bottom pane which is what most other competitors offer.

Please delivery tab for more information on lead time. The skylights simply fit directly on top of the existing builders upstand/kerb.  The skylight is manufactured to ISO 9001 industry standards in the UK.

Please see delivery tab for lead time information for all sizes.

We can offer custom options below on this product for an additional cost. Please email us details of this product weblink with options required and sizes for a quote.

  • Self clean glass
  • Grey tint glass
  • Solar control glass
  • Satin glass
  • Stippolyte glass

The roof lights sleek and contemporary design with a slimline powder coated frame and flush fitting glass panel maximise the light entering the room. The minimalistic framework ensures the framework is barely visible once installed as per our fitting instructions. If trickle vents are required please contact us for a quote before proceeding.

Please ensure sizes are checked before making payment as all orders are made to order sizes cannot be changed once manufacturing commences.

To prevent water pooling we recommend a minimum 5-degree pitch. Maximum recommended pitch for this product is 15 degrees.

Measuring & Installation Guide

Please see fitting instructions below and downloadable PDF link at the bottom of this page. Please note the prices listed on this page do not include a upvc upstand, these are to be fitted on a builders upstand. If required upstand can be supplied at an additional cost.

Please note size you purchase from the drop down menu on the website is based on the external upstand dimensions. If you purchase a 1000mm by 1000mm from our website then your external upstand dimension would be 1000mm by 1000mm. We have 20mm tolerance all around built into our sizes so if your external dimensions were 1020mm by 1020mm this would still fit. The width of your upstand should be 75mm wide.

Acceptable tolerance:

– Fixed Flat Glass Rooflight = rooflight size +20/-0mm

Please note self-clean option is only offered with some sizes and only works effectively at pitches of 10 degrees and above.

A minimum of 5 degree pitch is required for sizes where both the length and width are larger than 1650mm.

TGS – TGS LAMI RL Flat Fixed Glass CAD(Click here to view PDF)

TGS Installation LAMI Flat Fixed Glass(Click here to view PDF)

Technical Information

  • Premium rooflight offering a robust build
  • Powder coated aluminium frame as standard (RAL 7016).
  • Centre pane U-value of 1.1 W/m2K.
  • Thermally broken
  • Laminated inner glass pane for EXTRA safety

Standard Glass Specification:

  • 32.4mm Overall thickness
  • 6mm toughened clear glass top pane,
  • 20mm 90% Argon filled cavity
  • 6.4 mm laminated soft coat Low-E inner glass

For custom sizes bigger than 1000 by 2000 the bottom pane of glass used will be 9.5mm laminated glass. 11.5mm inner pane will be used for larger roof lights.


These units are expected to remain fit for purpose in normal industrial conditions for a period of 20 years (guaranteed for 10 years), i.e. they will not become perforated, lose significant structural integrity or distort to the extent of losing weather-tightness.

Electrical actuators (where present), are guaranteed for a period of 1 year; actuators have a design life of at least 10,000 cycles. Insulated glass used in the construction of the rooflight is guaranteed for 5 years.

Delivery & Lead Time

Sizes displayed below can be delivered within 2-3 working days. Lead time may vary at times due to workload.

600 x 600
750 x 750
900 x 900
900 x 600
1200 x 900
1200 x 600
1200 x 1200
1500 x 1000
1000 x 1000

1000 x 2000 – 5 working days

Sizes displayed below and all other sizes have a 4-6 working week lead time. Lead time may vary at times due to workload.

1950 x 1950
2000 x 2000
3300 x 1200
3300 x 1350
3300 x 1500
3300 x 1650
3450 x 1200
3450 x 1350
3450 x 1500
3450 x 1650
3600 x 1500
3600 x 1650

Please ensure labour is on site to sign for and off load the product from the vehicle as the driver from the transport company is not insured to deliver inside the property. Lead time may vary at times due to workload. We do not recommenced arranging equipment and installation until the item has been delivered.

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.