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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

What our customers say

All in all a very good experience with FGC

Thanks you for everything FGC did on this project for us.  We found you from an on-line search which doesn’t always identify helpful or committed suppliers, especially where the requirement is small or simple as this one was..  FGC were both helpful and committed.  Thank you especially for progressing things much quicker that the weeks

Very pleased and would definitely recommend

FGC have been fantastic, from my email enquiry, always very helpful and quick to respond. On time and on schedule.  Very pleased and would definitely recommend.   English Rose Estates (Great Ormond Street) 20150922

Great product and business

What a great product and great company. Smooth process, professional services from surveyor to installation team, and everyone in betweeen. I could not recommend them high enough.
Early days, but so far delighted.

Nigel Taylor
Nigel

Really Thrilled

We are really thrilled with our doors and the whole process carried out by yourselves. Thank you so much again. Mrs Newell 20160722

Mr C, Bournmouth

The installer was excellent. In spite of being let down by another member of the team he got on with with the job in a positive manner. Disruption was kept to a minimum and he cleared and tidied up. He demonstrated how to use the doors, ensured I knew how to operate them and answered

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

Dennington, Suffolk

From the start to the finish we felt comfortable with your staff and installers. It was a product just as we had hoped and envisaged for our new House double glazed, frameless glass doors in 4 openings! Perfect. The doors are a talking point and every body comments on how good they look! They are

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

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

Great Service

These guys are great initial installation was very rimely and efficient – the product ia fabulous and today we had a slight issue two years after inatallation and FGC came ‘next day at 7am’ and fixed the problem immediately real professional outfit – heartily recommend

Kevin O'Regan
Kevin

Mr PM

We chose FGC because we wanted something unique to connect both garden and our new room. Unique design, simple flawless construction, ease of use and durable construction all fit perfectly with what we wanted. FGC further enhanced the fit with great service and on site installation, answering any further queries we had very quickly. 20150112

Highly recommended

From the first moment of making contact we were given a very personal and friendly service. The survey, fitting and installation were all carried out by helpful and pleasant people. Follow up service was equally good. I am extremely pleased with the results.

Valerie smith
Valerie