Aluminium Bi-folding/Multi folding Doors

Create a seamless transition to your outdoor space.


Modern, sleek and secure.

Open up your living space without worrying about security.

Create a spacious atmosphere without compromising security with our stunning range of aluminium bi-fold and multi-folding doors.

With their timeless appeal, Bi-fold and multi-folding doors can be tailored to fit almost any space. Functional as they are beautiful, folding doors are a low-maintenance way of making a room feel bigger and airier.

A perfect glide

Introducing the Korniche Bi-Fold Doors

When it comes to bringing more of the outdoors into your home, it’s the details in your bi-folding doors that make the difference.

  • Great looking handles in matching finishes.
  • A perfect glide.
  • Slimmer profiles.
  • More glass.
  • Better protection.
  • Superb heat retention.

Korniche gets every element right.

Beautiful slim sightlines

With a clean, consistent, and slim design, our bi-folding doors superbly reflect the care with which they were made, with frames that can be powder coated in vivid colours on either side.

Enjoy more of the view

These beautiful frames are highly durable, with narrow profiles and glazing seals hidden within the frame, meaning more glass to help you enjoy more of the outside world.

Expertly engineered for a smooth glide

Korniche bi-folding doors exude the same quality in their function as they do in design, with an exclusive roller system that delivers an effortlessly smooth glide every time.

Enhanced protection as standard

Certified to the advanced PAS24:2016 standard, the frames come with enhanced security that includes a 3 Star Yale locking barrel, high strength shoot-bolts and multi-point FUHR locking systems.

Bespoke matching handles

Our high-quality, bespoke door handles come in matching finishes and are engineered to maintain their great appearance during day-to-day operation.

Smart thermal technology

With high precision materials and equally high manufacturing tolerances, our bi-folding doors feature polyamide thermal breaks to keep heat in and the cold out.

Patented clip glazing

Korniche’s smart technology includes a specially designed and patented clip glazing bead that allows the glass to be installed or replaced in seconds.

Premium partner

Introducing the Origin Bi-folding doors

The OB-49 is our slimline door system that has been re­engineered from the industry-renowned OB-72. Its sightline of just 49mm means less profile and more glass is achieved, giving you a panoramic view of your surroundings.

The OB-72 is a cleverly designed, beautifully made and exquisitely finished sliding folding door system that features a unique free-glide running system. Offering sightlines of 72mm and chamfered beading.

Open up your living space, garden and patio area with stunning Origin aluminium bi-folding doors, expertly made in the UK to your specification.

Whether incorporated into a new-build, an extension or an older period-style property, the door’s expansive glass panels give you an uninterrupted widescreen view of the outdoors, letting you enjoy your home and its surroundings all year round.


The Thermaglaze process

We pride ourselves on offering the very best experience for our customers throughout every stage of the process.
Known fondly as the “Thermaglaze experience".

From quote to installation, we make it easy for you!

"Have used Thermaglaze for many years. Always professional, helpful and very courteous. Delighted with completed work."

Mr J Watson







Case Study

Alma Fields

Installation in Castle Cary in the county of Somerset

This was a modern new build project with a glazed shaped frame to the rear to allow light to flood into the kitchen area. Slimline Smarts Alitherm 300 windows were used along with the Smarts Visofold 1000 aluminium multifolding doors. To keep continuity the French doors were manufactured in matching Visofold Profiles which are much slimmer than standard door profiles. The structural supports to the gable section were then cladded in matching aluminium pressings. All the aluminium products were powder coated in a Sensations Platinum Grey Finish.
A Solidor composite Front Door was used as a focal point to the from elevation finished in Anthracite Grey to match the Fascia and Soffits.

Products used:
SMART Aluminium Windows | SMART Aluminium Multi-folding Doors | SMART Aluminium French Doors |
SMART Sensations Finishes | SOLIDOR Composite Doors | EUROCELL UPVc Fascia & Soffits

Customer: Jenkins Developments


What our customers say

Don’t just take our word for it. Hear what our customers have to say!

A local company selling a quality product and good reviews. Your installer Jayson was fantastic, he was highly professional, courteous and meticulous in every detail, recommended highly.


Solidor Flint 5 Composite Door, Salisbury

Thermaglaze were the most competitive priced compared to other companies. You were recommended by a neighbour who was also happy with your service.


Front Door, Swindon

The Thermaglaze Family

Like the look of our service and products but not based in our catchment area? Take a look at our 2 sister companies in the surrounding area.

Clearglaze Windows

Based in Bath, we cover the following areas: Bradford on Avon, Radstock, Keynsham, Chippenham, Saltford and Midsomer Norton.