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Comparing sight lines on bifolding doors

Bifolding door sightlines are one of many considerations when choosing a new, quality folding sliding door for your home.  To help you understand this feature found in all types of doors, we explain more about it as well as what to consider. We also compare our best selling frameless doors with some of the best-known brands.

bifolding door nightlines
Only our frameless sliding and fold doors come with virtually no sight line and no visible mullion.

Everything you need to know about bifolding door sightlines.

First of all, the definition of a sight line is the amount of non-glass material, blocking the line of sight through any door in the closed position.  Many good brands of bifolding doors now offer reduced sightlines thanks to the better design.

Secondly, every door, whether aluminium, PVCu, timber or even our frameless doors, require a frame. One frame houses the glass units; the other frame is the perimeter frame fixed to your house.  The outer frame is always visible – as every door needs this for rigidity, security and weather performance.

Third, is the visible frame you see around the glass.  In a conventional bifolding door, every panel is independent. As a result, when looking at a closed set of doors, you see visible mullions.  The more panels in your bifold, the more mullions you see. This is the sightline.

Therefore, while bifolding doors are outstanding as a patio door, opening up your home, in winter, they remain closed. Consequently consider that the thinner the mullion, the more glass you get and the better views through the glass.

Comparing bifolding door sightlines on aluminium bifolds.

At FGC, not only do we have a lot of bifolding door experience, but we also know other products too.  Our patented frameless system is a premium quality door.  With no visible mullions as well as no aluminium, only our door offers you the slimmest bifolding door sight lines. Therefore,  if you’re comparing our doors to other top brands as you do your research, we make it easy for you to compare bifolding door sightlines.

BIFOLDING DOOR SYSTEM Door Sight Line
FGC Frameless Double Glazed Door Virtually no sightline
Schuco ASS 80FD 112mm
Schuco ASS 70 FD 120mm
Reynaers CF68 131mm
Centor C1 Bifolding Door 136mm
AluK Optio BSF70 Folding Sliding Door 140mm
Origin Bifolding Door 154mm

Of course, there are other brands of bifolding doors, but we are showing you the premium brands allowing you to compare on a like-for-like quality basis.

Four Reasons why frameless doors are the better bifolding doors.

If the sight lines on your bifolding doors matter, there are more great reasons to choose an FGC frameless slide and fold doors.  Our unique mullion design provides benefits and a better bifolding door in other areas too.

No unsightly door hinges.

Any aluminium, upvc or timber concertina style bifolding door needs hinges to connect the door panels. As a result, you get not only visible mullions but also visible hinges.  Inside the doors, you also get two handles. One is a pull handle the other is a locking handle.

Our frameless system uses our roller system with durable guides meaning the doors do not require any intermediate hinges.

Better views through the glass.

Look at the double glazed units in your home, and you will see a white,  silver or black ‘spacer bar’.  A spacer bar holds the two panes of glass together as well as providing energy efficiency to the overall window or door.  Thermal performance in glass and windows help lower your energy bills.

Our doors also use thermally enhanced spacer bars. However, at the door mullion, we use glass instead of plastic or metal.  As a result, we offer better clarity through our already minimal sight lines.

Thinner aluminium than other bifolding doors.

As well as offering you no visible mullions and the best aesthetics, our doors also have thinner aluminium in the critical areas.  Our door rails and our outer frame is smaller than most bifolding doors on the market.

Furthermore, our doors are also narrower depth profiles too.  So not only do you get thinner doors when closed, but you also get neater stacking doors when open. Our fully folded panels take up less space than other brands.

A lower bifolding door threshold.

The thinner bifolding door sightlines and thinner frame also allow us to design a lower threshold.  Even better is our threshold is lower than other brands’ threshold and comes with a weather rating.  Check out most other bifolding door thresholds marketed as ‘low’, and you’ll often see a disclaimer saying there is no weather rating or that threshold suggested for internal use.

Contact us today to find out more and for a free quote.

Our unique patented product offers all the benefits of a bifolding door such as transforming your living space and enhancing your home.  They are energy efficient, secure and weather resistant.  Our doors also give you better views thanks to slimmer frames and bigger glass panels.  They also have the best sight lines. Contact us today to find out more and get a free quote.

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What our customers say

No Hesitation in Recommending You

A brief note to thank you for your services in supplying two sets of doors and two fixed panels. From the start of contact with your company you have been very professional and communication has been excellent. The panels now installed look amazing and appearance when compared with usual bi folds or other types of

Cheerful with a ‘can do’ attitude

FGC fitters Mick and Baz arrived at 0754hr ready to begin work. They were polite, helpful and fitted in seamlessly with the existing project team responsible for the restoration of this significant village property. The boys worked without fuss, cheerful with a ‘can do’ attitude taking the time to explain the system as they fitted

Shindi Poonia
Shindi

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

Recent maintenance visit

FGC came to carry out some minor maintenance and as always they were very efficient and friendly. During this period of social distancing, they were well prepared and able to do the work safely and professionally.

David Paterson
David

Achieving exactly what we wanted

We are delighted with the end-resulting porch and it is achieving exactly what we wanted from it. We have also had several very positive comments from visitors, etc – which is very gratifying. We have also been impressed with the attitude and approach of all the company employees we have met.

Mr & Mrs White
Mr & Mrs White - Staffs

Amazing Service

We’ve FGC doors installed in our rear extension and they really are the highlight of the whole development. The support from the FGC guys has been friendly and really responsive – Brilliant service all round!

Jack Richens
Jack Oxford

A FIRST CLASS JOB FROM A FIRST CLASS COMPANY

From contacting FGC for a quote to having them installed was seamless.
We were kept informed every step of the way and installation was earlier than quoted when we paid our deposit. On the day Mick and his team installed the doors talking us through each step and left our house and patio cleaner

Tony Hobbs
Tony

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

Hugely impressed by your level of service.

I just wanted to say that I remain hugely impressed by your level of service. The two chaps who came out to service our doors were once again marvellous.  They are very polite and clearly very skilled. It’s very easy these days to complain and sometimes it’s nice to pass on credit where it is

Balcony Glass Curtain

From the moment I contacted FGC their help and attention to detail was exemplary. I had particular requirements which meant that each of the glass doors where different sizes. FGC decided to install in two visits rather than one at no extra cost to ensure that they achieved what I wanted We are extremely pleased

Graham Humphrey
Graham from Bury St Edmunds

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

Mr M K @ Saffron Walden

A heartfelt thank you from us. We knew we wanted something a bit special to set off our extension, which has been absolutely essential in making our new home work for the family. We scoured the internet for something that would allow an uninterupted view of the planned garden but would also allow us to

Published on May 28, 2015

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