Domestic GlazingAluminium Bifolding Doors

Open Up Your Home

Bi-folding doors remain one of the best ways to create a genuinely open connection between your home and garden.

Unlike sliding doors, where part of the opening remains glazed, bi-folding doors can fold back almost completely, leaving the majority of the opening clear.

Whether it’s a smaller extension or a much larger opening, modern aluminium systems give us enormous flexibility in panel sizes, configurations and finishes.

The important thing is getting the specification right for your home.

How Big Can Bi-Folding Doors Be?

Much bigger than most people realise.

Depending on the system, glass specification and configuration, individual bi-folding door panels can reach approximately:

UP TO 4.5m HIGH

UP TO 1.5m WIDE

These are maximum capabilities, not sizes we would automatically recommend.

Sometimes fewer, larger panels create exactly the look you want. On another project, more smaller panels may operate better, stack more neatly or simply suit the building better.

Our job is to help you get that balance right.

Designed Around Your Opening

Depending on your home and the size of the opening, options can include:

  • Inward or outward opening doors.
  • Panels stacking left, right or in both directions.
  • Everyday traffic doors.
  • Low and flush thresholds.
  • Double or triple glazing.
  • Slim aluminium sightlines.
  • High-security specifications.
  • A huge choice of colours and finishes.

Because we offer different aluminium systems, we’re not trying to make one bi-folding door suit every project.

For most bi-folding projects that means Solarlux or Schüco.

We recommend the solution that best suits your opening, priorities and budget.

Flush Thresholds Look Great. But Location Matters.

A flush threshold can create a beautiful transition between your home and garden, but it needs to be specified properly.

A sheltered opening beneath an overhang is very different from an exposed elevation taking driving wind and rain.

External levels, drainage and weather exposure all matter. If we believe a completely flush threshold is inappropriate for your property, we’ll tell you and explain the alternatives.

Bi-Folding Or Sliding Doors?

For larger openings, it’s worth considering both.

Bi-folding doors allow almost the entire opening to be opened. Sliding doors generally provide larger uninterrupted areas of glass and fewer vertical frames when closed.

Neither is automatically better.

It depends whether your priority is the view when the doors are closed or creating the largest possible opening when they’re open.

Get The Important Details Right

Large openings need appropriate structural support. Thresholds, drainage and finished floor levels need to work with the doors.

These aren’t reasons to make the project complicated.

They’re simply things that need getting right before manufacture rather than discovering them during installation.

Discuss Your Bi-Folding Door Project

Whether you have a small extension or an entire elevation you want to open up, start with the opening rather than trying to choose a product.

Send us your drawings, dimensions or simply an idea of what you’re trying to achieve.

We’ll explain what’s possible and recommend the aluminium bi-folding door solution we genuinely believe is right for your home.

For the standard we work to, see the Ilkley project.

Aluminium bifolding doors fully opened

Aluminium Bifolding Door Projects

Aluminium bifolding doors from inside the home

Aluminium bifolding doors fully opened

No FAQs available.

Our Process

Good glazing starts with good decisions.

Every glazing project is different, but the way we approach them is consistent. Our process is designed to make the important decisions early, when they are easier and less expensive to resolve.

We specify aluminium systems that best suit the building, the budget and the long-term expectations for the project.

See our full process

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1. Initial Conversation

Tell us about your project. Whether you have drawings, planning approval or simply an idea, we’ll listen first and ask the questions that need answering before recommending anything. If you’re a new client, we recommend visiting our factory early on to meet the team and see how we work.

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2. Quote & Cost Options

Using the information you’ve provided, together with any drawings, we’ll prepare a detailed quotation clearly setting out what’s included and any exclusions. Unless a particular system has already been specified, we’ll recommend the one we believe best suits the project’s design, performance requirements and budget.

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3. Order & Site Survey

Once an order has been placed, we’ll arrange a site survey. Our surveyors establish datums, measure structural openings and confirm the agreed details. We’ll also work with your builder or contractor to resolve any outstanding issues before manufacture begins. Access, logistics and installation considerations are assessed at this stage, helping prevent expensive problems later.

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4. Drawings

We’ll produce a full set of working drawings for approval. These incorporate the agreed survey details and, where required, reference site datums so structural elements provided by others are clearly identified and dimensioned.

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5. Procurement & Manufacture

Once the drawings have been approved, we’ll procure the materials and begin manufacture. We’ll then confirm the expected installation date to suit your construction programme.

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6. Professional Installation

Before installation begins, we prepare site-specific Method Statements, Risk Assessments and Lift Plans where required. Our experienced installation teams carry out the work safely and in accordance with the approved drawings. We don’t rush work simply to move on to the next job.

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7. Completion & Aftercare

Once installation is complete, we’ll inspect the finished work, make sure you’re happy with the result and remain available if you need us afterwards. Where applicable, operation and maintenance manuals will also be provided.

No stats available.

Colours Options

Whether you’re refreshing a traditional space or designing something new, we’re here to help you get the colour just right.

British Standard Colours

The BS 4800 Colour Chart is a long-established and trusted British Standard colour system, widely used across the UK.

RAL Colours

Known for their consistency and broad selection, RAL colours are ideal for both modern and traditional projects across domestic, commercial, and industrial settings.

What Our Customers Say

Hear it from the people we have worked with.

Alistair Colins 5 ★

AGS handled everything from design to installation of our sliding doors. The team were friendly, tidy, and clearly knew their stuff. The finish is flawless and has totally transformed our kitchen extension

Chloe Brown 5 ★

Our architect recommended AGS and we’re so glad they did. The aluminium glazing is solid, smooth to operate, and beautifully finished. Professional, courteous installers and excellent aftercare – genuinely outstanding service

James Watson 5 ★

For our new-build project, we needed a reliable company to design, manufacture and install all the aluminium glazing. AGS took full ownership of the package, liaising with our architect and builder. Their technical knowledge, especially around thermal performance and detailing, was excellent. The finished product is stunning and functions perfectly

Paul Hopworth 5 ★

We’re absolutely delighted with the glazing supplied and fitted by AGS. From the first survey to final sign-off, communication was clear and responsive. They went the extra mile to resolve a last-minute design change without delaying the project. The doors operate beautifully, feel solid, and the overall finish is outstanding

Peter Guilbert 5 ★

We wanted something a bit special – big slim-framed sliders, a glazed roof and frameless balustrades. AGS talked us through Schuco and Cortizo options and gave sensible advice on budget. The end result is amazing; loads of light, everything feels really solid and the neighbours keep asking who did it