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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.

FINANCE OPTIONS AVAILABLE

What our customers say

Minor Problem Addressed

A strip of the furry trim at the top of the frame that the doors run on had come loose. On the one hand the sort of thing that one could have a go at fixing; on the other hand having witnessed the care and attention the FGC installation team do their work; I thought

Shindi Poonia
Shindi

City View Projects, Battersea

As to how we were from initial contact (were we polite)? Extremely polite & very helpful. Arranging installation (were we on time and on schedule) Excellent, on time & schedule. Were we clean and tidy? Yes. And finally are you pleased with our doors (would you Recommend us)? My next design & build project I

Porch Door

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 right.

Philip N Brown
Phil & deborah

Excellent Service

We have had excellent service from our doors, but recently experienced a problem with the handle. FCG sent a team out promptly, they arrived early and fixed the problem to our entire satisfaction quickly, efficiently and politely. A really nice couple of guys and it is a great comfort that when things go wrong, as

Carole Low
Carole

It is fabulous

Thank you.  It is fabulous  

J Comley (Margate)
J Comley (Margate)

After sales

Delighted with the windows – they make our kitchen so much lighter and are a joy to use.
Two teething problems since installation have been dealt with promptly and efficiently by FGC at no charge.
Definitely recommend them to all.

John Holland
Johnny

Mr M W

We had been looking for ages for the solution to fill two large spaces leading from the house to our new Orangery. From the moment Gary showed us the product at Partridge Farm we knew it was just what we wanted. A year later and we are still delighted. We broke one of the glass

Armstrong

Regarding your service I would like to make the following comments Web site, initial contact and service My wife saw a product similar to FGC Glass Curtains whilst on holiday. After undertaking a lot of searching on the internet we came across FGC. FGC offered a product we could not find anywhere else, i.e. a

Brilliant!

We are absolutely delighted with our frameless glass doors. They have transformed our living area in terms of light and space, giving a contemporary feel. The whole process has been very efficient and the fitters who came to install the doors were excellent. I would definitely recommend!

Angie Barker
Angie

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

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

ABCO, Southampton

On the day of installation your fitters arrived on time and commenced with the installation. They were courteous and polite and left the work area clean and tidy. I would be happy for you to use the installation as a promotional example of your work. 20150218

Published on May 28, 2015

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