Call us: 01732 848088

Glossary of terms for slide and fold doors

The frameless slide and fold doors you see on our website are developed by us to create a slide and fold door for your home like no other. As you do your research around bifolding or even sliding doors, you may come across some technical expressions. So to help you, we have created a glossary of terms for slide and fold doors.

Glossary of terms for slide and fold doors

Glossary of Terms for slide and fold doors.

Some of the terms and definitions used are relevant to all types of folding doors; others are exclusive to our unique frameless doors.

Bifolding door system.

When people talk about a bifolding door system, they are referring to the company that is behind the design of a particular “system”.  The frameless slide and fold doors from FGC are our own bespoke purpose-designed system you will not find on sale anywhere else.

We make our advanced frameless bifolding doors that are fitted by us and guaranteed by us.

Frameless doors.

A frameless door, whether hinged or bifolding is a door with little or virtually no visible framing. Study carefully other versions of slide and fold door marketed as ‘frameless’, and you will see plastic or aluminium extrusions covering the glass edges of the doors.

Only our doors give you a true frameless appearance. The correct definition of a frameless slide and fold door is the one with no visible mullions. Our doors have no visible mullions yet remain secure and highly weather resistant.

Traffic Door.

A traffic door on a bifolding door is an independent hinged leaf that works like a regular door. Traffic doors are very beneficial in enabling you to use the doors all year round without having to slide or fold any of the remaining door panels.

If your new door is the only door out to your garden or you wish to benefit from easy access in and out all year round, we recommend a traffic door.

Low threshold.

Bifolding doors are broadly speaking available with a standard rebated or a low threshold. It is the low threshold that enables you to have the level floors either side of your new doors.

Many bifolding door systems with a low threshold option will advise that there is no weathering or that low threshold doors are only available for internal applications.

The threshold on a frameless slide and fold door is as low as 5mm and still has a weather rating.

Energy efficient glass.

A quality folding door has double glazing or triple glazed units. These glass units are made with warm edge spacer bars, argon gas fill and low-emissivity coatings. These and other materials create energy efficient glass.

Energy efficient glass, when used in conjunction with the thermally broken framing create doors that help reduce your heating bills.

The energy efficient glass used in our frameless slide and fold doors is patented and unique to our doors. On our sealed units, you will find a beautiful transparent spacer bar made of toughened glass, not plastic or metal. We use toughened 20 mm glass spacer at the edges, sandwiched between 4 mm – 6 mm Low Iron (light reflective) or Pilkington Planitherm 4s energy efficient glass with argon gas filling.

Thermally broken aluminium.

Aluminium profiles in their raw form are inefficient conductors of heat. For current slide and fold doors, the aluminium profiles are modified with a thermal break. This is an insulating material that forms a bridge between the inside and outside faces of the aluminium.

Thermally broken aluminium is warmer, better insulated and with the glass, contributes to creating an energy efficient door with low U-Values.

U-Values.

A U-Value is a measure of the thermal performance of a slide and fold door. The lower the U-Value, the better the performance. The glass used in our frameless bifolidng doors has a U-Value of 1.0Wm2K

Bifolding door configuration

The bifolding door configuration refers to how the door is designed for your home. Configuration relates to the number of panels, the sliding direction, whether the doors open in or out and if there is a traffic door.

Colour, handle options and other access also come under configuration.

PAS24.2012

A quality door is subjected to independent testing for its security. One of the most highly regarded security tests is PAS24.2012. PAS24.2012 specifies test methods and other criteria to test the enhanced security performance of doors and windows. These test methods are designed to resist the methods of attack from the opportunistic burglar.

Our frameless glass slide and fold doors are independently tested to PAS24.2012.

Bifolding door stack.

The bifolding door stack refers to the fully open doors where all panels are folded open to one or both sides. When configuring a bifolding door consider how much space the doors will take when in the open position. The more door leaves, the bigger the stack and space taken.

With profile sizes of 45mm, our frameless slide and fold doors take up just 180mm on a four panel set. Conventional aluminium bifolding doors are more than double this dimension.

Bifolding door Mullion/Sight Line

The bifolding door mullion relates to the visible size of any bifolding door when in the closed position. Each door panel meets the next creating a sight line.

The major aluminium systems in bifolding doors have sight lines on average of 120-154mm. Frameless bifolding doors give you only a minimal gasket line as they have no visible mullions or door hinges at this mullion/sight line junction. There is no slimmer slide and fold door on the market.

If you would like further information on our range of frameless slide and fold doors, internal doors or frameless room dividers, contact us today.

FINANCE OPTIONS AVAILABLE

Reviews on Facebook and Google

Frameless Glass Curtains have few competitors so they could take a lacked approach to their work. However, that is not the case. We have had a porch installed in a space that was not square or aligned. The service from survey to finish has been above standard. Barry’s attention to detail and determination that the work would not be complete until his high standards were met was much appreciated. The communication from the admin side was clear and helpful. So all in all we will be using Frameless Glass again and have no hesitation in recommending them.
D J
D J
14:43 14 Apr 22
Highly competent office and site staff, great product and at a fair price. Couldn't be happier with the entire experience and end result.
paul R.
paul R.
17:07 29 Mar 22
From the beginning to the end, everyone at FGC have been amazing. I knew straight away that the glazing FGC would provide and install would be spectacular and how right that was! The FGC glazing allows our Edwardian stained glass door to still be a main feature and in fact it shows it off perfectly. We are so happy with the end result and can’t praise FGC highly enough, somehow 5 stars doesn’t seem to be high enough.
vanessa C.
vanessa C.
20:41 14 Mar 22
Their windows are second to none. No other company in Germany, UK or anywhere else can produce such a fabulous product.Any issues that has come up, they always come & fix it. The staff are so nice and polite. For a small company they do really a great job over all. The main things are the frameless bifolds that you hardly have any frame in the line of vision and there is a 5 years guarantee. Mr & Mrs Jahedi
Zorè
Zorè
15:13 09 Mar 22
Delighted with our new frameless glass doors. Had lots of lovely comments, even all the trades who have been working on our house have said they've not seen anything like them. Great having something a little unusual. The quality of the doors is of a very high standard. The service from FGC has been very good too, from ordering through to installation. All went very smoothly with no problems. Paid a bit more than regular bifolds, but worth every penny. Best decision, no regrets at all.
Fiona G.
Fiona G.
15:57 06 Feb 22
Very happy with our installation
Jayne N.
Jayne N.
17:36 03 Feb 22
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
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
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
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
js_loader

What our customers say

Mrs J @ Childer Crescent Little Sutton Cheshire

Following the installation of our “double glazed curtains” we would like to say we are delighted with the result. The amount of light now coming into the living room is so different, we are also pleased with the amount of noise they keep out, We are glad we had them double glazed. Paul was a

Grand Designs!

We are both delighted with the FGC product and have no issues with any future viewings. From our perspective the “outside has truly come inside”, we use the decking on a daily basis as the FGC curtains have transformed the house which I think adds a significant value to the property. The only trouble now

Excellent Service

The guys phoned, as promised, to let me know their ETA. Arrived punctually and did a great job. It’s apparent they know the system inside out and we’re very thorough. All after sales follow up has always been efficient. Chatty and polite guys. Thanks FGC.

Mel Crann
Mel

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

MIKE LEVERS, Hove

Installation of four double-glazed doors, internal to a large bay window arrangement, top floor flat. Initial contact was by email and a quote came back within a couple of days. More than can be said for some of the other companies we contacted about similar products. We visited the factory for a demonstration and were

Always Polite

Re delivery, there was an initial hope that you might be earlier than the 6-8 week lead time, but once that wasn’t going to happen, you gave us a date, and were then able to bring it forward a couple of days to fit around our holiday schedule, which was great.  Guys turned up at

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’.

The glazing is stunning

The whole experience with FGC has been really positive from the visit to the factory to the final installation. The glazing is stunning.  Highly recommended.

Julie
Julie in Surrey

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

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

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

I have nothing but praise

I have nothing but praise for FGC who have just replaced a panel in my frameless glass curtain which is almost 10years old…there was no quibble and they replaced it quickly and efficiently…I would recommend their frameless product to anyone wanting a stunning addition to their home..with 5 star service

rosalie reeder
rosie

Published on September 11, 2017

Other articles you may like