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- Easyfit clip in beads for fast installation
- 1.3 U value as standard
- Slimline 110mm sightlines
- Adjustable jamb as standard
- 20mm super slimline interlock
- Slimline outer frames for minimalist design
- Large glass areas of 2.5m x 3m per sash
- Double & triple track options
Width: {{overall_width}}mm Height: {{overall_height}}mm
Measurements not specified
Please note that your selection has NO EXTERNAL ACCESS
Please note your price does not include glass as your glass units are over 2.5m2. Please save your quote and we will email over an accurate quote to you in 2-4 working days.
£{{price}}
Price Inc VAT
Restart
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 2-3 weeks on stock colours (Grey, White & Black),
6-8 weeks on special RAL and textured finishes.
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
Sash heights on the designer are limited to 2400mm high, but doors can be manufactured up to 3000mm in height if required. If you require a size larger than the designer offers please email your requirements to: enquiries@gfdhomes.co.uk
CLICK here for information regarding delivery methods
Delivery Method Information
If you have questions please call us on 01642 309 574.
Please note any doors with 5 panes or above, or over 4 metres in width, will be made in flat pack form as standard
Images below are for illustration only, the packaging may differ.
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
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
Lever/Lever Handles
Click/tap image to enlarge
Master Door Restrictor
The maintenance kit is an official Cortizo product and recommended to keep your bi-folding door working at it’s best. The kit includes:
- Profile Cleaner
- Lubricating Oil for Hardware
- Special Treatment for Gaskets
- Cleaning Cloth
- Maintenance Manual
Part Q Information
Please note by upgrading to Part Q complaint, the doors will also be Secured by Design & PAS24 accredited.
Part Q will upgrade the following options:
Glass will be laminated
Upgraded locks & hardware
Pictures below is a reinforcing bar required for PAS24 certification. These may also be required depending on the wind load requirements.
Double Glazed (28mm)
- 4mm Glass (4/20/4)
- U-value 1.3
- A rated glass
- Argon Gas
- Black Spacer Bar
Our standard glass offering—the superb 1.3 U value makes this option suitable for both refurbishment and new build.
Triple Glazed (40mm)
- 40mm Glass
- U-value 0.8
- A rated glass
- Argon Gas
- Black Spacer Bar
This industry leading U value of 0.8 means the door can meet the Passivhaus sta«ndard.
6mm Double Glazed (40mm)
- 6mm Glass (6/16/6)
- U-value 1.3
- A rated glass
- Argon Gas
- Black Spacer Bar
This glass is required for larger doors where the units are over 2.5m2.
Laminated (28mm)
- 6.8mm Laminated Outer Pane (6.8/18/4)
- U-value 1.3
- A rated glass
- Argon Gas
- Black Spacer Bar
High security glass that prevents breakage - suitable for doors in vulnerable areas or doors that need to achieve Part Q or Secured by Design. Internal pane will automatically be upgraded to 6mm glass for units over 2.5m2.
Unglazed (3-Day Turnaround)
- Beading Size: 28mm Double Glazed / 40mm Triple Glazed
Express delivery option. Your doors will be manufactured in 3 working days, with delivery on the next available date to your postcode area. Glass sizes will be sent to you within 24-48 hours of placing your order.
Unglazed (10-Day Turnaround)
- Beading Size: 28mm Double Glazed / 40mm Triple Glazed
Express delivery option. Your doors will be manufactured in 10 working days, with delivery on the next available date to your postcode area. Glass sizes will be sent to you within 24-48 hours of placing your order.
Blinds
- 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.
- 28mm Glass
- U-value 1.8
- A rated glass
- Argon Gas
- Superspacer
Our standard glass option that satisfies most regular applications.
- 36mm Glass
- U-value 1.1
- A rated glass
- Argon Gas
- Superspacer
Triple glazing option that offers improved energy performance and acoustic properties.
- 28mm Glass
- U-value 1.8
- 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
- U-value 1.8
- 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).
Fitted into sash.
Click here for more information.
Click here for more information.
Add Ons
Add-ons (sometimes referred to as frame extensions) are basically lengths of the frame profile that extend the thickness of the frame.
Add-ons are usually only required if trickle vents have been selected. As these are fitted into the head frame, the add-on provides additional clearance for plasterboards etc.
Add-ons can also be used in any situation where additional clearance is required to clear the plaster line internally. We offer add-ons in two sizes, 25mm and 37mm. Please note these are for the head of the doors only.
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.
Threshold Information
Selecting the right threshold and sill is crucial to ensure proper floor levels and door clearance. The wrong choice can cause issues with functionality.
Many customers aim for a 'flush' threshold for a seamless indoor-outdoor transition. While a fully flush threshold is rare, you can achieve a nearly level surface in most cases.
Consider your door’s location—if it’s exposed to extreme weather (strong winds, heavy rain) or installed above ground level, a higher threshold will offer better weather protection.
You can click to save an image and view the high resolution version.
46mm Rebated Threshold
(Recommended)
28mm Low Threshold
(Shown here on top of cill)
Integrated Cill
Threshold
Width: {{overall_width}}mm Height: {{overall_height}}mm
Measurements not specified
Please note that your selection has NO EXTERNAL ACCESS
Please note your price does not include glass as your glass units are over 2.5m2. Please save your quote and we will email over an accurate quote to you in 2-4 working days.
£{{price}}
Price Inc VAT
Restart
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 TIMES:
STOCK COLOURS: 8 WEEKS
(Anthracite grey, Black, White)
RAL COLOURS: 10 WEEKS
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
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
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
Please note:
Standard paint finish is marine
grade as standard. However, for
any installations in a coastal or
high salt environment, please
contact us before placing an
order. Anodised paint options are
recommended for these
situations
Click to zoom
PLEASE NOTE:
Cor Vision doors will come with locking handles inside and out as standard.
PLEASE NOTE:
All sashes are pre-bonded during manufacture and will arrive glazed.
Default glass specification: 28mm double glazed units, A-rated toughened glass, black spacer bar, argon gas filled.
Glass specification will be upgraded accordingly based on overall glass size.
Smaller door sizes will be based on 4mm toughened glass, and the specification will increase to 6mm or 8mm glass as required.
Laminated glass is recommended for vulnerable/easily accessible locations, and is a requirement for document Q/PAS24.
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).
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 patio 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.
180mm sill
230mm sill
250mm sill
Drainage Subcills
Click here for more information.
Add Ons
Add-ons (sometimes referred to as frame extensions) are basically lengths of the frame profile that extend the thickness of the frame. Add-ons are mainly used to clear the internal frame of the plaster line, and are required when a trickle vent is needed. Due to new 2022 building regulations, trickle vents are often required so add-ons are now very commonly required.
You can click to save an image and view the high resolution version.
38mm Add-on
38mm Add-on (Triple Track)
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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.