Our new Heritage bi fold door has been designed to work in perfect harmony with our existing Heritage door and window range. Offering a traditional stepped profile detail with slim sightlines.
Delivering the perfect combination of retro steel style design with modern strength and exceptional thermal performance our Heritage bi fold door system is capable of opening up an entire wall to integrate outdoor and indoor living space.
...trumps the steel-type systems on thermal performance and cost.
The grasp of the importance of design and quality of manufacture from the Marlin Team is second to none.
This smooth and easy to operate bi fold door with robust roller and panel guides can be tailored to your specific requirements.
Use flexible opening options and multiple transom configurations to create your authentic time-honored design.
To complement our Heritage bi fold door we have commissioned authentic hardware in various styles and finishes and if required these can be powder coated to match the frame work.
A tough multi-point locking mechanism protected with the Avocet ABS euro cylinder further enhances the appeal of this elegant bi fold door manufactured to our usual industry leading high standards.
The clever locking system of the Avocet ABS® diamond grade cylinder knows when it has been snap attacked and fires into action to create a robust barrier to entry. The patented Active Cam TechnologyTM is hidden deep within a solid Molybdenum cam which is 20% stronger than steel, and delivers ultimate resistance against a lock snapping attack and snap/twist manipulation. All of the snap technology is focused on the outside part of the lock only. This makes sure that maximum strength is given to the inner part of the lock - the part that has the job of securing your door.
The guys did an excellent job today removing my old doors and then installing my new bi-folds... old doors and frame out cleanly and then installed the new doors very neatly. All in all an excellent job well done. The new bi-fold doors look really good!
Our high quality window and door products are backed by the same high quality customer service. Technical advisors are just a phone call away to answer all your questions no matter how technical.
Typical help provided includes:
We provide a FREE sample service to assist with surveying decisions, design considerations, or planning applications – just pick up the phone and ask.
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I ordered three sets of doors to self-install: the team at Marlin were really helpful with all my technical queries, which helped make sure my orders were mm perfect and the doors all went in smoothly with the glazing bars all lining up precisely. They look great - will do it all again in our next house!
From our initial contact with Marlin Windows we have been very impressed. Super customer service, they actually answer the phone and call back promptly if they’re not available. Hannah dealt with the quote patiently and efficiently and Adrian was very helpful throughout with technical advice.
The final products, we chose Heritage doors and windows, look stunning. Thank you.
Our aluminium profiles are polyester powder coated by our systems suppliers using the very latest paint application techniques guaranteed for 25 years.
Fully compliant to the latest June 2022 building regulations our standard double glazing is the exceptional light transmitting, energy saving ClimaGuard® A+ low emissivity (Low-E) glass manufactured by Guardian Glass.
Thank-you Marlin Windows for a great job! You designed and built all the windows in our renovation project including sliding doors and bi-folds with care and consideration. From our first contact with Adrian through to the final fitting, the service was exceptional...
Many thanks for supplying and installing my new bi-fold doors. The guys did an excellent job today removing my old doors and then installing my new bi-fold doors. They managed to get the old doors and frame out cleanly and then installed the new doors very neatly.
All in all an excellent job well done. The new bi-fold doors look really good!
Our low profile superslim frame low threshold bi-fold doors featured on Love Your Home & Garden With Alan Titchmarsh (Swindon episode)
broadcast on ITV on January 15th 2019
Watch the programme highlights in less than 2 minutes below
"it's like a dream home"
"So easy to open"
"so slim and so elegant, barely any step we're talking millimetres"
Sliding and Slide & Fold Brochure
|Download (13.2 MB)
|1.5W/m2K using a 1.0 centre pane
|Class 2, 450Pa
|76 or 82mm
|24, 28, 32 or 40mm double or triple glazed units
|Typical Sight Line
|94mm for Slide and Fold Door
|Max Sash Height
|Max Sash Width
|Max Sash Weight
Read our guide to buying bi-folding doors for your home
All bi-fold doors can be fitted with built in integral blinds
Read our guide to achieving a fabulous seemless appearance of a flush threshold