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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

Quality company with quality product. Very happy with our new frameless folding doors.
Danny B.
Danny B.
10:39 14 Aug 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 H.
David 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

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

Brilliant After Installation Service

Our FGC sliding doors were installed in May 2018.
Although we have had two relatively minor problems – neither of which stopped the doors from working – FGC have attended very promptly to carry out remedial action.
Excellent customer service from head office and excellent service from install technicians.
Many visitors comment

Nick Medlam
Medlam

Delighted

The frameless doors we had fitted are exactly what we had hoped for, they look amazing and bring the outside in and inside out !The service from the company was exceptional at all times.

Lorraine Hucker
Lorraine

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

Frameless Glass Doors

This is a professional operation with excellent after sales care. Very refreshing

Richard Martin
Richard

Mrs M @ Beaumont Close London SW15

We were very happy with the service offered from start to finish. The frameless glass doors are a perfect solution to our extension and have received many compliments.The workmen who installed the doors were courteous and efficient, the job completed in a few hours, we had a slight problem that needed attending to and this

Mrs L

It’s nearly a year since you installed our glass curtains. They have been really great, exceeding our expectations, particularly during the winter months when they were absolutely draught free. When they are fully open you really feel that the lounge is part of the garden, it all becomes one space. Many thanks, they were one

An underestimated product

After visiting a NT stately home which had a glass porch entry I asked fgc to see if they could do one for us. I had the vestiges of a porch with brick sides but no front. The installation made the entrance a feature which is declared up market and interesting. It is a halfway

Professor Eaton
Professor

MF

We are absolutely delighted with the doors, they are so classy and modern. Paul (FGC) was excellent and knew his job. The workmanship is superb. All our friends and family think they are fantastic. Thank you once again. 20150113

Wonderful

First class frameless clear glass door system excellent fitting team very pleased with product

Susan Summersby
Mrs Paignton

Our Frameless Glass walls

Putting a frameless glass walls between our South facing lounge and dining room conservatories was one of the best things we have ever done in our house. When shut, they keep out the cold in winter and, most importantly, the heat on very hot summer days. When open during sunny winter days, the heat warms

Heather Glasgow
Heather

Chartered Building Surveyor I was impressed with the installers

I would like to reiterate that we are very pleased with our new FGC doors. As a Chartered Building Surveyor I was impressed with the installers who were careful, methodical and very professional my wife who is most particular was also very impressed with their cleanliness. I am sure we will get many years of