Bi-fold & Patio Doors In Exeter
Want to open up your living space with bi-fold or patio doors in Exeter?
Slim-framed bi-fold and sliding patio doors that connect your home to the garden - installed across Exeter
- Aluminium and uPVC bi-fold doors available
- Thermally broken frames - A-rated glazing as standard
- FENSA registered - full certification on completion
- Free survey and written quote
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Bi-fold and Patio Doors Across Exeter's Homes and Extensions
Exeter's mild south-west climate means gardens are genuinely usable for more of the year than in much of England. Spring arrives earlier, autumn stays warmer longer, and even a dry winter afternoon in St Leonard's or Pennsylvania is comfortable enough to be outside. That's one reason bi-fold and patio doors have become so popular across Exeter - they let you make the most of a garden or terrace that's actually usable, rather than just visible through the glass.
We install bi-fold and patio doors across all areas of Exeter - on rear extensions to Victorian terraces in Heavitree, St Thomas and Newtown, on kitchen-diner openings in Pennsylvania and St Leonard's, and on newer builds near Cranbrook and Alphington where large glass openings are often specified from the outset. Around 8 in 10 bi-fold enquiries we receive involve a rear extension where a wall has been removed, creating a new wide opening that bi-fold doors are the natural solution for.
All our bi-fold and patio door installations are FENSA registered and backed by our 10-year workmanship guarantee. We specify thermally broken frames and A-rated glazing as standard - the thermal break in the aluminium profile is the single most important factor in preventing heat loss through a large glazed opening, and we won't fit frames without it. We provide written itemised quotes after every survey with no additions on the installation day.
15+
Years' experience
1,400+
Installations completed
10yr
Workmanship guarantee
Free
Site visits & quotes
Bi-fold and Patio Door Types We Install In Exeter
Here's a breakdown of the main door types we offer for garden openings across Exeter.
Aluminium Bi-fold Doors
Aluminium bi-fold doors are the most popular choice for wider openings in Exeter - typically anything over 3 metres. The structural strength of aluminium allows much slimmer frame profiles than uPVC, which means more glass and a cleaner sight line when the doors are closed. When folded open, the panels stack neatly to one side (or split to both sides) leaving the full width of the opening unobstructed.
We specify thermally broken aluminium frames as standard - this is non-negotiable on a large glazed opening where an unbroken aluminium frame would conduct significant heat out through the metal. Available in any RAL powder-coat colour with a range of hardware finishes. Anthracite grey frames with brushed stainless steel handles are by far the most requested combination across Exeter's rear extensions. Prices typically start from around £2,500 for a three-panel configuration.
uPVC Bi-fold Doors
uPVC bi-fold doors are a cost-effective alternative to aluminium for narrower openings - typically up to around 3.5-4 metres. The profiles are naturally thermally insulating without needing a separate thermal break, which is an advantage. The trade-off is that uPVC profiles are wider than aluminium, which means more frame and less glass in the same overall opening. For wider openings, the structural limitations of uPVC mean aluminium is usually the better choice.
uPVC bi-fold doors are available in white, grey, anthracite and woodgrain finishes. They're popular on budget-conscious extension projects in Exeter where the opening width is modest and cost is the primary consideration. A practical, durable choice for narrower openings. Typically 20-30% less expensive than equivalent aluminium bi-fold doors.
Sliding Patio Doors
Sliding patio doors are a simpler alternative to bi-fold doors for smaller openings. One panel is fixed; one or more panels slide on a track to create the opening. They're less mechanically complex than bi-fold doors, require minimal maintenance and are a good choice where the opening width is 1.5-2.5 metres and the priority is simplicity and value rather than the widest possible opening.
We supply and fit sliding patio doors in uPVC and aluminium, with a full range of glazing options including solar control glass for south-facing openings. Available in standard two-panel and three-panel configurations. Popular on Exeter properties where a single sliding panel provides enough of an opening for everyday use and the larger cost of a bi-fold system isn't justified.
Inline Sliding Doors
Inline sliding doors (sometimes called lift-and-slide doors) are an upgrade on standard sliding patio doors, using a mechanism that lifts the panel slightly off its seal when the handle is turned, allowing it to slide freely, then drops back down onto the seal when the handle is released to lock. This creates a much better weather seal than a standard sliding patio door while still allowing very large panels to slide smoothly.
Inline sliding doors can handle larger glass panels than standard sliding systems and suit wider openings where bi-fold doors have been rejected for practical or aesthetic reasons. Popular on contemporary extensions in Exeter where the clean, uninterrupted glass line is the priority. Available in thermally broken aluminium with a range of colour and glazing options.
Why Bi-fold Doors Work Well In Exeter
Exeter's south-west location and mild climate make large glass openings a practical choice for more of the year than you might expect.
Opens the room completely
When bi-fold doors are fully open, the entire width of the aperture is clear. This transforms the feel of a kitchen-diner or rear reception room - particularly useful on the narrower terraced properties common in Heavitree, St Thomas and Newtown.
More natural light
A large bi-fold or patio door aperture fills a room with natural light even when closed. Rear rooms in Exeter's Victorian terraces are often dark - a large glass opening is one of the most effective ways to improve this.
Good thermal performance when closed
Thermally broken aluminium frames with A-rated double or triple glazing perform well in winter. The large glass area means getting the specification right matters more than on a standard window - we advise on the right glazing spec for each opening.
Secure locking
Modern bi-fold doors use multi-point locking systems that engage along the threshold and head of the frame. Quality systems are significantly harder to force than older or cheaper alternatives. We specify lock systems with a proven track record.
Adds property value
Bi-fold doors to the garden are a consistent seller's feature in Exeter's property market. Combined with an open-plan kitchen-diner, they're one of the most impactful improvements you can make to a Victorian terrace or semi.
Low maintenance
Powder-coated aluminium frames and toughened glass require minimal upkeep. The tracks and rollers on quality systems are designed for long-term reliability. Annual lubrication of the rollers is the main maintenance requirement.
Our Bi-fold Door Installation Process
Bi-fold door installation is more involved than a standard window - here's what the process looks like from start to finish.
Free site visit
We visit, measure the aperture, check the structural support above and to the sides, and discuss configuration, colour and glazing options. We'll advise on which direction the panels should fold given your space.
Written quote - itemised, no surprises
You receive a written itemised quote covering the frame, glazing, fittings, installation and waste removal. The price includes all labour on the day.
Frames and units manufactured to measure
The frame sections and glazed units are manufactured to the exact dimensions of your aperture. Bi-fold doors don't use standard sizes - every set is made to measure.
Old frames/units removed carefully
Existing doors or frames are removed and the aperture is prepared for the new installation. We check the structural condition of the opening before fitting begins.
New installation fitted and sealed
The threshold and head track are fitted level and plumb, the frame is secured and the panels are hung. Sealing is completed internally and externally. The threshold is finished so it presents no trip hazard.
Hardware adjusted and tested
Every panel is adjusted so it folds smoothly, sits flush when closed and locks correctly. We test through the full operating cycle multiple times before signing off.
Final inspection - FENSA certificate issued
We walk through the finished installation with you and issue your FENSA certificate. We'll demonstrate the operation and locking of the doors before leaving.
Our Guarantee
Every window and door we install is backed by a 10-year workmanship guarantee. That covers the fitting itself - how the frame sits in the opening, how it's sealed, how the hardware operates. If anything we've done causes a problem within ten years, we come back and fix it.
The glazing units themselves also carry a 10-year manufacturer's guarantee against seal failure and condensation between the panes. Both guarantees are issued in writing on completion of the job, alongside your FENSA certificate. When you come to sell, your solicitor will ask for these documents - we make sure you have everything you need.
The guarantee only stands if the product is correctly installed. That's why we don't rush surveys, we don't cut corners on preparation, and we don't send crews who don't know what they're doing. The guarantee is only as good as the quality of the work behind it.
10
Year Workmanship
Guarantee on all installations
10
Year Unit Guarantee
On sealed glazing units
Also included on every job:
- ✓ FENSA certificate issued on completion
- ✓ Building regulation compliance confirmed in writing
- ✓ All guarantees transferable if you sell the property
What To Look For In A Bi-fold Door Installer In Exeter
The most important factor is a proper survey visit before quoting. Bi-fold door apertures - particularly those created as part of rear extensions in Exeter's Victorian terraces in Heavitree, St Thomas and Newtown - are often non-square and may have structural complexities at the head or sides that affect what's possible. The structural support above the opening must be confirmed adequate for the weight of the door system before any order is placed. A company quoting from photos or from measurements you've supplied yourself is not doing due diligence on this, and a structural surprise during installation can be expensive.
FENSA registration applies to bi-fold and patio door installations just as it does to window replacements. All glazed door installations must comply with current building regulations for thermal performance and safety glazing, and a FENSA-registered company self-certifies this on completion. The certificate is important for conveyancing when you sell. Given the cost of a bi-fold door installation, the FENSA certificate is a relatively small assurance that the job was done to the required standard - make sure it's included.
On product quality, the two things that matter most are the thermal break in the frame and the quality of the locking system. Thermally broken aluminium frames have a polyamide barrier running through the profile that interrupts the thermal conductivity of the metal. Without this, the aluminium conducts heat out of the building through the frame - which, across a large bi-fold installation, represents significant heat loss. A-rated double or triple glazing should be specified as standard. For the locking system, look for multi-point engagement along the threshold and head - not just a single central lock. The threshold seal is also critical in Exeter's wet climate: a good threshold seal prevents water ingress during heavy rain and keeps draughts out in winter.
Garden Door Types Compared
| Bi-fold Doors | Sliding Patio Doors | French Doors | |
|---|---|---|---|
| Maximum opening width | Up to 6-7 metres | Typically up to 4 metres | Typically up to 1.8 metres |
| Frame visibility when open | Panels stack to side | Half of opening framed | Both panels visible |
| Operation | Fold accordion-style | Slide on track | Open outward |
| Cost range (fitted) | £2,500 - £4,000+ | £1,200 - £2,500 | £1,000 - £2,000 |
| Best for | Wide openings, extensions | Narrower openings | Smaller garden openings |
| Planning considerations | Usually permitted development | Usually permitted development | Usually permitted development |
"Bi-fold doors are most commonly fitted as part of a kitchen extension project - around 8 in 10 bi-fold enquiries we receive in Exeter involve a rear extension where an existing wall has been removed."
Window Installers Exeter - based on local enquiry data
What Exeter Customers Say About Our Bi-fold Doors
Genuine feedback from homeowners across Exeter and the surrounding area
"Had all eight windows replaced in our 1970s house in Heavitree. The team arrived on time, laid dust sheets throughout and were done in two days. Biggest difference is the warmth - no more draught across the living room floor in January. Really happy with the whole job."
Karen T. — Heavitree, Exeter
"I got three quotes. These were the only company who actually came out and measured properly before pricing - the others just asked for the number of windows and gave me a number over the phone. The price was competitive and the job was done cleanly. Would use again without hesitation."
Mark R. — Topsham
"Secondary glazing fitted throughout our listed cottage near the Cathedral Close. They knew the planning restrictions before I'd even finished explaining and recommended exactly the right product. The noise reduction from the road is noticeable immediately. Brilliant from start to finish."
Sarah M. — St Leonard's, Exeter
"Composite front door replaced after the old one warped and stopped sealing properly. The new door is solid, the fitting is neat and they took the old door away. Got our FENSA certificate in the post a few days later. Exactly what you want - no fuss, job done."
David H. — Pinhoe, Exeter
"Bi-fold doors fitted to the rear of our extension in St Thomas. The difference to the kitchen is incredible - it feels like a completely different room when they're open onto the garden. The team were tidy, professional and explained everything clearly throughout. Top marks."
Claire W. — St Thomas, Exeter
Common Questions About Bi-fold Doors In Exeter
How much do bi-fold doors cost in Exeter?
A three-panel aluminium bi-fold door typically costs between £2,500 and £4,000 fitted. Larger configurations and premium hardware add to the cost. uPVC bi-fold doors are typically 20-30% less expensive. We provide written itemised quotes after every free survey.
Do I need planning permission for bi-fold doors in Exeter?
Replacing existing doors of the same approximate size usually falls under permitted development. Creating a new opening as part of a rear extension follows extension permitted development rules. Conservation area and listed building properties may have additional restrictions. We'll advise during the survey.
Are bi-fold doors secure?
Modern bi-fold doors with multi-point locking and toughened safety glass are secure. The quality of the locking mechanism matters - we specify multi-point engagement along the threshold and head, not just a single central lock.
What is the difference between bi-fold doors and sliding patio doors?
Bi-fold doors fold to stack at the side, opening the full width of the aperture. Sliding doors have one fixed panel and one or more sliding - they open less of the overall width but have a simpler mechanism. Bi-fold suits wider openings; sliding suits narrower ones or where simplicity is preferred.
How thermally efficient are bi-fold doors?
Modern thermally broken aluminium bi-fold doors with A-rated glazing perform well. The thermal break in the aluminium profile is critical - without it, heat loss through the frame is significant. We specify thermally broken frames and A-rated glazing as standard.
How wide can bi-fold doors be in Exeter?
Bi-fold doors can span up to 6-7 metres in standard configurations - wider with structural engineering. The number of panels increases with span. The maximum width depends on the structural support at the sides and above. We assess this during the survey.
Wondering What Bi-fold Doors Cost In Exeter?
Our pricing guide covers bi-fold and patio door costs alongside all other window and door installation prices across Exeter.
See Bi-fold Door PricesGet A Free Bi-fold Door Quote In Exeter
Book a free survey and we'll come to you, assess the opening and give you a written quote with no pressure and no obligation. Covering all areas of Exeter and the surrounding towns.