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- 4 stock colours, bespoke RAL upgrades available
- Huge range of configs available
- Perfect for achieving larger glass areas
- 4 stock colours, bespoke RAL upgrades available
Width: {{overall_width}}mm Height: {{overall_height}}mm
Measurements not specified
Please note that your selection has NO EXTERNAL ACCESS
Welcome to the
Global Door
Bi Folding Door Designer
WOULD YOU LIKE YOUR BI FOLD DOOR PROFESSIONALLY INSTALLED?
Select if you want your Bi Fold installed below.
Delivery only
- Nationwide free delivery
- 10 year product guarantee
Installation
- Nationwide survey & installation
- 10 year product guarantee
- 5 year installation guarantee
What is the size of the opening for your door?
(we just need some approx sizes to show you what is available,
exact sizes will be taken at survey)
Delivery is within 3 weeks for single colours
and 6 weeks for dual colours.
LETS GET YOUR DOOR DESIGNED!
We just need some rough measurements from you so that we can give you an accurate price instantly.
Don’t worry about being completely accurate, all we need is the size of your brick to brick opening.
Grab your tape measure and measure the width brick to brick, and then do the same for the height, maturing from the floor to the underside of the top brick - that's it!
The sizes entered here should be the overall brick to brick size minus a tolerance, which depends on your overall width. CLICK here and follow the deductions for aluminium based on your overall width.
Calculating your sizes
Please Note - Sash widths available are Standard (750mm-1000mm) and Oversized (1000mm-1200mm) surcharge applies for oversized.
Delivery Method Information
If you have questions please call us on 0800 56 77 406.
Please note any items larger than four panes will be made in flat pack form as standard. There is no extra charge for our flat pack option.
Assembled
The outer frame in one piece pre-fitted with sashes.
Flat pack
Flat Pack is perfect for installations with access issues, this will be Assembled then un-assembled for easy transport.
Choose a Premium Ral Colour
If you know the ral colour number you require, enter the value in the box below or alternatively select a premium colour from the list below
Selecting a Premium Ral will extend the lead time to 8 weeks and will include a Ral surcharge.
Choose a Ral Colour (Internal)
If you know the ral colour number you require, enter the value in the box below or alternatively select a colour from the list below
Selecting a Premium Ral will extend the lead time to 8 weeks and will include a Ral surcharge.
- 28mm Glass
- U-value 1.6
- A rated glass
- Argon Gas
- Superspacer
Our standard glass option that satisfies most regular applications.
- 44mm Glass
- U-value 1.2
- A rated glass
- Argon Gas
- Superspacer
Triple glazing option that offers improved energy performance and acoustic properties.
Quick glaze beads are only available on 28mm (including blinds and laminated)
- 28mm Glass
- U-value 1.6
- A rated glass
- Argon Gas
- Superspacer
High security glass that prevents breakage - suitable for doors in vulnerable areas or doors that need to achieve Part Q or Secured by Design.
- 28mm Glass
- A rated glass
- Argon Gas
- Superspacer
Integral blinds within the glass unit that are operated by a discreet magnetic slider along the glass edge.
Please note units with integral blinds have a 4 week delivery time, and will arrive on a separate delivery to the door(s).
Blind options are available on the next step.
Click here for more information. Please note that all blinds are ordered directly from the industry leading UK manufacturer in order to pass on the best price possible.
As a result all blinds will have a 4 week delivery time and will arrive on a separate delivery.
Cordless Blinds
The ScreenLine® SL20SV system is a manually operated sliding Venetian blind which features a single, cleverly designed magnetic slider to control the whole operation. Positioned on a narrow slide guide on the edge of the sealed unit, the cordless magnetic slider allows the blind to be raised, lowered and tilted effortlessly.
PLEASE NOTE - SLIDE MECHANISM WILL ALWAYS BE ON RIGHT HAND SIDE (VIEWED FROM THE INSIDE).
Available in a range of 7 colours. Please note that our colour 'Anthracite' is a close match but will not exactly match RAL 7016.
Please note units with integral blinds have a 4 week delivery time, and will arrive on a separate delivery to the door(s).
Click here for more information.
Trickle Vents
Trickle vents are optional and provide additional airflow into the home. Please check with your architect or project manager if trickle vents are required before placing your order. Each trickle vent is equivalent airflow area of 2214mm2.
We use a stylish flush fitting trickle vent that is fitted discreetly into the sash. This avoids having an ugly vent protruding from the head of the frame, and also eliminates the need for a head add-on.
You can click to save an image and view the high resolution version.
Sills & Thresholds
We have a range of Sill & Thresholds to suit all requirements, we believe this is one of those jobs that can best be done by an expert. Our Expert team of surveyors will advise you on the best Sill & Threshold option for you and your home during your home survey.
Cill Information
A sill sits underneath your door frame, and is there primarily to drain water away and stop it getting into the house! Please note the size referred to is the complete projection from the back of the bi-fold frame, not the complete projection from the front of the frame.
View the sill technical drawings below that further illustrate this.
Most doors are recommended to have a sill to help with drainage, even if a low walkthrough effect is the goal. For example, external decking or paving can be ran up to the edge of the sill.
You can click to save an image and view the high resolution version.
Threshold Information
Deciding which threshold and sill combination you have on your bi-folding door is perhaps the most important decision. If the wrong threshold is selected, you could have issues with floor levels and the door opening clearance. There are various thresholds to choose from, and we recommend consulting the help icon on the online designer for a detailed explanation of each. Alternatively, you can view our threshold guides below.
We find that many customers are looking to achieve a 'flush' threshold, so that the opening from the internal to external is seamless with the doors open. It should be noted that a completely flush threshold is rarely achievable, although you can get close enough in most cases.
It is also important to consider that the location of the door is relevant, and if your door is prone to receive extreme weather (high winds, heavy rainfall etc, is in an exposed location or not on the ground floor, then a higher threshold may be more suitable to provide a better weather rating.
You can click to save an image and view the high resolution version.
Width: {{overall_width}}mm Height: {{overall_height}}mm
Measurements not specified
Please note that your selection has NO EXTERNAL ACCESS
Please note due to the size of the sashes your price does not include a glass cost. Please save your quote and contact us for an accurate quote.
Please note due to the size of the sashes your price does not include a glass cost. Please save your quote and contact us for an accurate quote.
What is the size of the opening for your door?
(we just need some approx sizes to show you what is available,
exact sizes will be taken at survey)
Delivery is within 3 weeks for single colours
and 6 weeks for dual colours.
LETS GET YOUR DOOR DESIGNED!
We just need some rough measurements from you so that we can give you an accurate price instantly.
Don’t worry about being completely accurate, all we need is the size of your brick to brick opening.
Grab your tape measure and measure the width brick to brick, and then do the same for the height, maturing from the floor to the underside of the top brick - that's it!
The sizes entered here should be the overall brick to brick size minus a tolerance, which depends on your overall width. CLICK here and follow the deductions for aluminium based on your overall width.
Calculating your sizes
Delivery Method Information
If you have questions please call us on 0800 56 77 406.
Please note any items larger than four panes will be made in flat pack form as standard. There is no extra charge for our flat pack option.
Assembled
The outer frame in one piece pre-fitted with sashes.
Flat pack
Flat Pack is perfect for installations with access issues, this will be Assembled then un-assembled for easy transport.
Choose a Premium Ral Colour
If you know the ral colour number you require, enter the value in the box below or alternatively select a premium colour from the list below
Selecting a Premium Ral will extend the lead time to 8 weeks and will include a Ral surcharge.
Choose a Ral Colour (Internal)
If you know the ral colour number you require, enter the value in the box below or alternatively select a colour from the list below
Selecting a Premium Ral will extend the lead time to 8 weeks and will include a Ral surcharge.
Handle Options
- 28mm Glass
- U-value 1.6
- A rated glass
- Argon Gas
- Superspacer
Our standard glass option that satisfies most regular applications.
- 28mm Glass
- U-value 1.7
- A rated glass
- Argon Gas
- Superspacer
Our standard glass option that satisfies most regular applications.
- 36mm Glass
- U-value 1.4
- A rated glass
- Argon Gas
- Superspacer
Triple glazing option that offers improved energy performance and acoustic properties.
Quick glaze beads are only available on 28mm (including blinds and laminated)
- 28mm Glass
- U-value 1.6
- A rated glass
- Argon Gas
- Superspacer
High security glass that prevents breakage - suitable for doors in vulnerable areas or doors that need to achieve Part Q or Secured by Design.
- 28mm Glass
- A rated glass
- Argon Gas
- Superspacer
Integral blinds within the glass unit that are operated by a discreet magnetic slider along the glass edge.
Please note units with integral blinds have a 4 week delivery time, and will arrive on a separate delivery to the door(s).
Blind options are available on the next step.
Wind Loading Information
It is important to consider the amount of wind loading the patio is likely to be subjected so that the mullions are reinforced accordingly. Please select the option that best describes your installation and we will calculate the required reinforcing based on the sizes you have entered. This calculation is offered as a guide only based on the information inputted, and GFD Trading accept no responsibility for the structural requirements of individual applications.
For reference, please see below the cross sections showing the mullion reinforcing used for each wind load requirement. These are full length reinforcing bars that are screwed into the interlocks (sections where the doors meet).
None/Light - No reinforcing
Heavy - internal reinforcing bar
Severe - internal & external reinforcing bar
The standard interlock section has an 83mm sightline.
Click to zoom
The slim interlock is only 34mm and has a very slim sightline, giving you more panoramic views and maximum visible glass area.
Click to zoom
Outer Frame Information
The standard upstand has a 43mm clearance from the edge of the jamb to the sash. The internal upstand as a lip on the jamb which the sash slides into, giving a clear 52mm clearance on the jamb. The internal upstand is available as an upgrade if you need a wider clearance on the jamb, or for example have a plaster rebate that needs to avoid the sash.
Cill Information
You can click to save an image and view the high resolution version.
Sills & Thresholds
We have a range of Sill & Thresholds to suit all requirements, we believe this is one of those jobs that can best be done by an expert. Our Expert team of surveyors will advise you on the best Sill & Threshold option for you and your home during your home survey.