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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

Maximum Panel Heights  – up to 2.6m high, subject to overall product design. 

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.

We also offer a full range of aluminium windows, bifolding and sliding doors,
and front doors as FGC Bespoke Aluminium.

Visit the FGC Showroom

You can now visit our showroom in Strood, Kent.

The full range of Frameless products are on display in wide variety of configurations.

We request you contact us to make an appointment before visiting to avoid overcrowding.

Find out more about the FGC Kent showroom.

Reviews on Facebook and Google

What our customers say

Thank you for a brilliant product I am so glad I chose FGC for my windows/doors everybody who sees them is so impressed by them but mostly my wife and myself! Thanks again [and your team] Best regards Brian

we are very pleased with our new porch door which enhances the look of our Victorian house. Very professional job from beginning to end with a great deal of trouble taken to get the measurements exactly

Philip N Brown
Phil & deborah

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’.

Dealing with FGC has been a straightforward and hassle free experience from start to finish. I had several queries long before placing an order and FGC were always prompt and helpful with the responses. Then at site survey time they attended on time, with courtesy calls leading up to the appointment to keep me advised, the surveyors were very knowledgeable and again helpful. This gave me great confidence that I’d made the right choice by

Matt Chenery
Matt C

Many thanks for your prompt attention to our problem. As before, your fitters were punctual, friendly and efficient. A credit to your

Mr C, Surrey  

The service from your company has been exceptional throughout, cannot fault

Mr Thomas
Mr Thomas
We are very pleased with the freedom the installation affords us with easy access from lounge to dining room. Aesthetically the glass curtain installation is very pleasing. All appears well but we must point out the bottom bar is not firmly fixed in the channel in the floor & moves if one stands upon it. It does not appear to affect the glass curtain function & as we have a 10 year guarantee things can

The door looks excellent and we’re very pleased with the

Mr H, Wales

Thank you for a good job even though there were a few issues along the way. Chris and I will have no hesitation in recommending your company, products and services to others. Kind regards Mike and Chris Rodwell

Everybody from survey to install knew what they had to do and advised on what needed to be done prior to install. The glass cutains are just what was needed for the porch and have created a talking point within the village. They do look splendid and we are very pleased with

David Reeves
David r
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 with FGC, has been, from start to finish, incredibly professional. We have a small garden which is designed to feel

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’.

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