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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

Mr BG

Basically the installation itself was done pretty quickly and efficiently – three guys turned up early in the morning and were done by lunchtime. Polite, tidy. 20150112

Great Service

These guys are great initial installation was very rimely and efficient – the product ia fabulous and today we had a slight issue two years after inatallation and FGC came ‘next day at 7am’ and fixed the problem immediately real professional outfit – heartily recommend

Kevin O'Regan
Kevin

Excellent

A great product from a great company. Friendly and efficient service from day one.

Ian Greenfield
Ian G

Glass Curtains

Had to call FGC to come and undertake first maintenance visit of 5m curtain installation from 2013. Excellent friendly service and all seals repaired within an hour. Learnt need to silicone spray the seals as well as the floor track. Been a great purchase and very pleased.

simon ellis
Simon E

bringing the outside in!

as an Architectural Technologists, I stumbled across FGC and its proved to be my best stumble. I have knocked two rooms into one to make the most of viewing my garden, my wife and I were looking for the most unobtrusive bi fold door frame to maximise the view, which was proving a challenge until

Anthony Mackin
Anthony

Gemma Alashe, Chiswick

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

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

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

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

Highly Recommended

Excellent product. First class service. Good communication. Skilful, competent fitting team, clean & tidy. Wouldn’t hesitate to recommend FGC to anyone! We’re highly delighted with our frameless glass curtains!

Diane Ratcliff
Diane

N & S, Manchester

Just wanted to say a big thank you for coming up to Manchester from Kent to service our doors. My wife and I appreciated the service and continue to be really pleased with them. Lots of friends comment on how lovely they look and the window cleaner took your card this week, he is thinking

Doors look great

I like to confirm that the performance on site was excellent and the lads where very polite and helpful. The doors look great, all we have to do is to undertake all the finishes around the framework. 20160525

Published on May 28, 2015

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