Call us: 01732 848088

Double Glazed Doors Technical Specification

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 1.7Wm2K

NEW & IMPROVED Bubble Gaskets – Available in grey

Head Deflection – 12mm Incorporated in Design Specification

Worldwide Patents – Applied for, granted and pending.

Design Specification

Zussman IsleworthTW7, 4th May 2016, 4 door conbination, left to right, opening externally, RAL 7024Our 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.

What our customers say

A great job

Hi,
I would like to say that your work crew were really nice people and did a great job !!

Fantastic company.

Thank you for supply and fitting the beautiful bi folding doors to one of our bespoke projects. Customer service has been second to none. Timescales have all been met as promised. Would definitely use this company again in the future.

L G Blower Specialist Bricklayer Ltd
L G Blower Specialist Bricklayer Ltd

Very pleased with the glass

Very pleased with the glass curtain doors which you supplied on time
and installed very quickly. Great product that really enhances the room

Brian Berg
Brian Berg

Summerfield

As to how we were from initial contact (were we polite)?
Initial emails were very prompt, informative and positive and yes polite. Keen to accommodate our visit to the workshop and everyone very friendly.
Arranging installation (were we on time and on schedule)
Installation ahead of schedule and were on time on

Happy with all your support

The bottom line, I am happy with all your support to get me the financial support for this project.  Without your help the project would not have been realised.

Bashir
Bashire in Cambridge

No complaints at all

Feedback-wise all very good. No complaints at all. Not only would recommend but plan to buy another one in a year or two! Happy for you to put me down as a demo person and when the house(s) is finished you’d be welcome to have a video of the doors opening / closing as you

Frameless Glass Doors

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

Richard Martin
Richard

We are extremely pleased with the doors

The installation of our new doors was eagerly awaited and did not disappoint. The fitters arrived on time on the agreed installation date. All waste was removed and the installation area was left clean and tidy. The fitters demonstrated the use of the system including future self maintenance which was very useful. We are extremely

People admiring our new porch

We were only at home for one day following the installation. A courier delivering a parcel admired the porch and asked who built it for us. Success I think.   Mrs J, Broadstairs

Mrs J

Mr A B

We are very pleased with the glass curtains, which do what we want them to – separate the house and conservatory, meeting building regs, but as unobtrusively as possible. We were very happy with the service we received and the efficiency of those who fitted the curtains and we would have no hesitation in recommending

Replacement of Timber Bi Fold Doors with Frameless Curtains

When we purchased our house, it had two sets of timber bi fold doors, each spanning an opening of approx. 5m. These caused us a lot of problems with warping through the seasons, and the ration of timber to glass limited the light into the rooms.
We therefore replaced them with the frameless curtain

adam tamburini
Adam

GB

We had 3 sets of doors installed in April. We had searched far and wide for bifold doors and those supplied by FGC were undoubtedly the most striking. We have had favourable comments from visitors and the doors are functioning well. Our dealings with FGC have been excellent and they have attended since the installation