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Our showpiece double glazed exterior frameless doors  come with expert-craftsmanship, engineering and the highest performance. We explain some of the technical characteristics of our doors.  This page is ideal if you want more information about profile sizes, glass and general performance.

If your project also involves an architect or builder, they may also find this section useful to understand the relationship between the doors and the building structure.

double glazed doors

Thermally Broken Frameless Double Glazed Doors

First of all, we are proud of the European Patent of our doors. (Patent Granted EP 2 456 942 B1 and covers all of Europe and the UK for our innovative glazing method, America and Australia.)

Furthermore, our premium grade aluminium extrusions with a durable powder coated finish offer you the best in contemporary sightlines but they also some with technical characteristics designed for security, weather performance and long-term reliability.

Technical Specification

Specification of Bottom Track – (76mm x 58mm) 13mm gap which is thermally broken.

Specification of Top Track – (44mm x 61mm) Thermally broken and 4 x Weather Seals.

NEW & IMPROVED Profile Size – (70mm x 80mm) Inserts – 4 x Weather Seals.

Side Columns – 70mm x 58mm Deep with 4 x Weather Sealed Strips.

Glass – Standard Unit manufactured with 4mm/6mm Planitherm 4s soft coat and 4mm/6mm Toughened low iron. The toughened glass spacer which is 20mm x 12mm/15mm/18mm.  Glass is bevelled between the long edges of glass. Top and bottom have 2 rows of aluminium 20mm spacer bars filled with desiccant. Profiles are compressed onto glass and fixed with a polymer. The Glass U-Value is 1.0Wm2K with an overall U-Value including the frame of 1.4Wm2K

NEW & IMPROVED Bubble Gaskets – Available in grey

Head Deflection – 12mm Incorporated in Design Specification

Worldwide Patents – Applied for, granted and pending.

Design Specification

Our unique extrusions, side columns, tracks and profiles are all manufactured in the UK, as are our Frameless Doors. All units are manufactured to comply with BS6375 Part 1 2004.

The profiles on doors are connected to the tracks by means of a flag, including spacers which slide inside along the tracks. The tracks contain turning mechanisms which automatically tell us where the doors are to open. Doors can only be opened at gates, which are 13mm by 5mm, which makes them compliant to PAS24. The side columns expand by turning an internal handle, which in turn pushes the doors together to provide a weatherproof seal (wind and rain) BS6375 Part 1 2009.

How our doors work.

All doors slide on our purpose designed wheel system so the majority of the weight is at the bottom. Therefore, no additional reinforcing is required at the point of installation. Once the main working door is opened, the remaining doors then slide, stack and fold in the same location. As all doors are slim-line (45mm), they only take up a small amount of space. Our Frameless Doors can be stacked to either one or both sides of the opening, or a combination of the two. They can be opened inwards or outwards.

The door locking mechanism can only be accessed from the inside and uses a key situated within the handle for security purposes. There is no locking mechanism on the outside. When opening the main door, just turn the key and handle – the door will automatically spring back to allow you to open and close the door.

The framework is produced from powder-coated aluminium, manufactured in the UK and can be supplied in any RAL colour you specify.

Contact us for more information on our double glazed frameless doors.

FINANCE OPTIONS AVAILABLE

Reviews on Facebook and Google

Great service and very welcoming for my father and I. Adrian in particular was very efficient, gave great pertinent advice and guidance on my future purchase!
Andrew H.
Andrew H.
21:45 17 Jan 22
Excellent in all aspects from initial viewing in showroom to actual installation.
Des P.
Des P.
09:21 22 Dec 21
Excellent service and product from FGC.I have a glass-box conservatory, built with structural glass about 20 years ago. The 2 sliding doors needed replacing, along with 2 side panels, and I contacted dozens of companies selling conservatory doors and none of them were prepared to install their doors because of the perceived risks of working with structural glass.Then I found FGC who, with no fuss at all, carried out a survey, provided a very reasonable quote for the doors/panels and then installed the doors/panels on the agreed date.Communication with the FGC office was always quick and easy. The surveyor and installation team were efficient and courteous. The product works beautifully.We can now use our conservatory again. Thanks FGC.
Tony
Tony
08:03 09 Nov 21
Great company with excellent, friendly and responsive service, the guys were helpful and efficient with the installation and the slide and turn doors are a fantastic product.
Arun S.
Arun S.
16:52 23 Oct 21
Excellent service from start to finish, from sales/admin to site survey to installation. Good communication throughout, very friendly staff and the Frameless Glass Curtains are a serious piece of kit. Quality materials, unique design and look stunning. Thoroughly recommended.
Roger H.
Roger H.
07:56 12 Aug 21
Fantastic service from start to finish, from the surveying, contact with office to the workmen. I have experience through work of a number of companies providing similar products and these guys have been by far the best to deal with
Matt G.
Matt G.
14:12 10 Jun 21
FGC installed a two-panel frameless glass door at our property yesterday. Wow!! the installation is exactly as discussed, and was carried out by two of FGC's team members who were so professional and courteous. They were excellent, and we have no hesitation in recommending FGC and their team to anyone considering such an installation.We are delighted with the installation, and very pleased we chose FGC.Well done FGC!!
David W H.
David W H.
07:31 10 Jun 21
The quality of the windows / doors are second to none.The customer service was first class from placing the order to installation we were kept informed at every step.The installation team led by Richard left our house and patio cleaner than when they arrivedI would recommend FGC 100%Tony- Burnley
Border S.
Border S.
16:19 28 May 21
From start to finish everything was excellent.Fab u lasThank you
Stephen H.
Stephen H.
20:09 27 May 21
BRILLIANT SERVICE FROM START TO FINISHHighly recommended.
Stephen O.
Stephen O.
09:01 21 May 21
We purchased a beautiful Origin sliding door and side window from FGC. FGC installed the sliding door and window on time, however the sliding door did not fit correctly. Issues can happen. FGC made the process of re-surveying and re-installation very simple. FGC is a very pleasant and professional company to deal with. We are very happy with their service and would strongly recommend them.
Nathan P.
Nathan P.
17:45 20 May 21
Fantastic product fitted by professional abs friendly staff.
Chrissie B.
Chrissie B.
17:07 05 May 21
I love my doors! It’s transformed my place. The people are great, no nonsense, organised and efficient. I’d recommend them to anyone
Darius C.
Darius C.
12:29 05 May 21
The quality of the product and the care taken in design and fitting is excellent. Really pleased with the finish and the service throughout. Excellent value.
Ken K.
Ken K.
09:37 21 Apr 21
Excellent planning and product advice. All the staff were polite courteous and friendly.On the day of the installation, the team arrived bang on time -we live in Wales so a long drive from Kent! They had the job done by lunchtime (fitting a sliding patio door) and I have to say that on first impression of the unit, it looks and feels like solid quality.
Adrian W.
Adrian W.
12:15 13 Apr 21
We had a 5m stretch of these wonderful doors installed several years ago and have been very happy with the uninterrupted view of the garden that they allow from the living room. They are admired by every tradesman who sees them. A minor problem we experienced with water ingress last year was promptly and effectively resolved, and the doors were serviced for free at the same time.
Ian J.
Ian J.
15:06 26 Feb 21
We love our new kitchen windows fitted by FGC - we particularly chose them for their slim frames. Their service has been excellent throughout, including on a recent maintenance item. We would highly recommend them.
Tica C.
Tica C.
13:21 13 Feb 21
Excellent product fitted by professional and friendly staff. Would absolutely recommend.
Bernadette C.
Bernadette C.
14:59 10 Feb 21
Great staff and great products! Have visited the showroom to view doors, really loved all of them! Have referred to a friend - Can't recommend enough
Elly B
Elly B
14:53 22 Sep 20
Really great doors. Really are something different. Expensive, but you really pay for what you get here.
Adam F.
Adam F.
12:56 10 Aug 19
so pleased with the first class service we received from the first phone call to the installation I would highly recommend FGC !
Chris S.
Chris S.
15:47 12 Oct 17
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What our customers say

Pleased with the product and installation quality.

I found Frameless glass Curtains very easy and trustworthy to deal with. All personnel I had contact with were polite and professional. I am very pleased with the product and installation quality.

Mr M Donovan
Mr M Donovan

bringing the outside in!

as an Architectural Technologists, I stumbled across FGC and its proved to be my best stumble. I have knocked two rooms into one to make the most of viewing my garden, my wife and I were looking for the most unobtrusive bi fold door frame to maximise the view, which was proving a challenge until

Anthony Mackin
Anthony

Exceeds expectations

Just to thank you for great service, it exceeds expectations and is really appreciated. Please circulate around your team and particular thanks to the two guys who completed the work professionally and represented your company very well. Thanks again Reg Ford

Reg Ford
Reg

A big thank you

Hi Sara Just to day a big thank you for relating the doors the guys did a great job I had to leave them to it as I was in London Regards Melissa

Mellissa

Brilliant Service

The service that we have received from FGC is exceptional – rapid response, punctual, clean & tidy work!

jayne scrimgeour
Jayne

Outstanding

This is the first project I have completed with FGC and it will not be the last. From the original survey and quote, right through to final installation, the team at FGC have been tremendous. The communication and detail is outstanding, the quote was fair market competitive and the final result of the product in

Claire Menzies
CMenzies

Frameless Glass are one of the most impressive companies I have ever come across

This company have a product which to my mind is “second to none”. Their glass doors really let you feel you are outside as they have the tiniest of joins…I used to know the exact cm measurement! I was initially worried though about what would happen on follow up problems as their main office is

Fiona Robinson
Fiona

Professional and Efficient

We had FGC doors and windows installed in our house in May 2019. From our initial enquiry through to installation everything was handled very professionally and with attention to detail. The doors and windows themselves are excellent quality and definitely enhance the house. The fitters who carried out the original installation were very good and

Geoff Radford
Geoff

Mr Mrs H @ Bucklebury West Berkshire

The service I received from FGD was professional and prompt from the initial on site survey through to installation and completion. Added to this the finished product has exceeded my expectations. It has enhanced my home with style and individuality, and enabled me to make use of the space in a way that is ‘unique’.

Delighted

Delighted with final result and extremely pleased that I decided on these ‘frameless glass doors’ over conventional bifolds. The company had no end of patience with any pre-order questions that I raised and the factory visit and visit to view an existing installation were very informative and reassuring. The team that fitted were professional, attentive

Linda Trodd
Mrs T

Cheerful with a ‘can do’ attitude

FGC fitters Mick and Baz arrived at 0754hr ready to begin work. They were polite, helpful and fitted in seamlessly with the existing project team responsible for the restoration of this significant village property. The boys worked without fuss, cheerful with a ‘can do’ attitude taking the time to explain the system as they fitted

Shindi Poonia
Shindi

Gemma Alashe, Chiswick

In short, the product offered by Frameless Glass Curtains is nothing short of excellent. These frameless glass doors are a truly unique system that are really aesthetically pleasing and unlike any other product we could find on the market. The doors are very sleek and elegant and create real impact and wow factor. Our experience