The room gets lighter. The garden feels closer. And because French doors open outward on hinges rather than folding or sliding, they are simpler to operate and easier to maintain than most people expect.
They work on all kinds of properties – period terraces, new builds, rear extensions, side returns.
A French door is a pair of fully glazed doors hinged on either side of a central frame. Both leaves open outward, giving a wide, clear opening across the full frame width.
The term comes from 17th-century French architecture, where large glazed doors opening onto a terrace became a standard feature of domestic design. The principle has not changed – a wide glazed opening, hinged on each side, with as much glass as the frame will allow.
Modern French doors are available in aluminium, timber, and composite timber-aluminium. They can be fitted with full-height glazing, glazing bars, side panels, or a fanlight above to bring in more light.
Bifold doors fold back in sections and suit wide openings – up to 5 or 6 metres. French doors suit narrower openings, typically up to around 2.5 metres. They open on hinges, require no track system, and work particularly well on period properties and standard rear elevations.
A sliding door moves horizontally on a track and gives maximum glass in wide openings. French doors open on hinges and work well on narrower openings, period properties, and rear elevations where a hinged door is the natural choice.
A standard patio door has one fixed panel and one sliding panel. French doors give a double-leaf hinged opening across the full frame width. Both suit similar opening sizes and are a practical choice for rear garden access.
A single door gives one point of access. French doors give a double-leaf opening, considerably more glass, and a stronger connection between the room and the garden.
Aluminium holds large glass panels in a narrow profile, letting in more light than older uPVC or timber systems.
Powder-coat finishes do not peel, warp or need repainting.
All modern aluminium French doors are thermally broken, with a polyamide strip separating the inner and outer aluminium sections to prevent cold bridging.
PAS 24 certified multipoint locking and Secured by Design compatible hardware as standard. The Origin Soho goes further with an 8-point locking mechanism and a 3-star British Standard Kitemark barrel.
Made to measure for almost any opening, including non-standard heights in older properties.
Available in the same system and colour as aluminium bifold doors, sliding doors or entrance doors elsewhere on the project.
Posted on Michael ScorerTrustindex verifies that the original source of the review is Google. This is a very special building company. I've worked in housing for 30 years and everything I experienced about Citi Homes is best in class. From first contact, communication was quick, clear and high quality. Quotes arrived quickly with high quality cad drawings. Once the detailed design was agreed, a delivery and installation date was agreed and then met. The operatives who fitted all eight windows in two days (bearing in mind the new windows were a completely different design to the ones removed) were polite, extremely conscientious about minimising any damage, very professional, clean and tidy. The result is a great product, perfectly and quickly installed. I have been recommending this company to friends and colleagues. If you need new high quality windows, at a highly competitive price, look no further. I would always recommend getting two or three estimates, but I honestly think that would be for reassurance rather than as a serious competitor to Citi Homes.Posted on thomas humphriesTrustindex verifies that the original source of the review is Google. Citi Homes supplied new Rationel windows for our loft conversion. Great service throughout - good support through the quotation / ordering process and excellent communication on delivery times etc once the order was placed.Posted on Justin EarreyTrustindex verifies that the original source of the review is Google. Citi replaced my damaged Velfac balcony door: Great communication from Linas who managed to source a replacement from the manufacturers, even though the door is no longer produced. The install team also did a great job delivering and troubleshooting on site to ensure the door was replaced and now fully usable. Highly recommend.Posted on Mary ThumTrustindex verifies that the original source of the review is Google. Citi supplied a very large (2 metres X 2 metres) window to replace one that had shattered. The job involved craning the new unit up to our fourth-floor terrace and fixing it in position. Citi found a very good crane company to do the lift and dealt with our local council to get the necessary license to close the street during the work. We found Linas, the Citi manager who ran our job, to be very professional and easy to work with.Posted on dermot hayesTrustindex verifies that the original source of the review is Google. I spent an enormous amount of time researching doors and windows. I wanted triple glazed, thin elegant frames, affordability and value for money. I searched the net and contacted very many companies; some looked very good indeed apart from the affordability and some were not worth bothering about. I contacted Velfac UK who I had heard were very good and they put me on to Citi Homes Windows who handle their products. We went to visit the Citi Homes showroom and they were fantastic. Over a cup of tea we discussed with them what we wanted and they showed me frames that exactly fitted the brief. They were able to give me an estimate on the spot, based on approximate sizes and followed up with a visit to discuss the project with my builder and to take accurate measurements. They confirmed the price and we placed the order just before Christmas 2025, taking delivery in the middle of March 2026, about eight weeks turnaround if you take out the Christmas period. The windows and doors are installed and I am delighted with them. They are substantial and elegant frames of excellent quality. The fitters were great and very charming; in fact all the people at City Homes are very charming and excellent communicators which really helps. I think the doors and windows are of excellent value and I got exactly what I wanted; triple glazed, thin elegant frames, affordability and value for money. The total price including fitting was under £8000.00. I would certainly highly recommend them. Dermot Hayes.Posted on Rosie GastonTrustindex verifies that the original source of the review is Google. Wonderful experience with the team from start to finish. They replaced 5 floor to ceiling window panels for us after damage caused by a fire. The installation and service was seamless. Great communication, constant updates on progress, and the guys were super efficient, hard working, respectful and tidy. They’ve done a fab job and we couldn’t be happier with both the process and the final product. Thank you!Posted on Philip WareTrustindex verifies that the original source of the review is Google. Excellent service from the Citi Homes Windows Team. Very helpful and competative with their prices. We would have no hesitation in using them again on any future projects.Posted on danny vaiaTrustindex verifies that the original source of the review is Google. Had a great experience with Citi homes installing Velfac windows and doors Very accommodating and good value Would recommend DVPosted on AndyTrustindex verifies that the original source of the review is Google. Really good service. Citi homes were really good to deal with. Great communication and very professional service. Would definitely recommend.Posted on Andy LawTrustindex verifies that the original source of the review is Google. Great people, great window.
The Origin Soho is one of the most popular French doors in London right now. At 36mm it has one of the slimmest frame profiles on the market and replicates the look of traditional Crittall steel doors in a modern, thermally efficient aluminium system. U-values as low as 0.8 W/m²K. Available in anthracite grey, jet black and textured black. 8-point locking, PAS 24 certified, compliant with the 2025 Future Homes Standard. Made in the UK at Origin's High Wycombe factory.
Schüco French doors share the same engineering standard as their sliding and bifold systems. Thermally broken, PAS 24 certified, available in double and triple glazed configurations. The right choice for architect-led projects or any brief that demands the highest performance standards.
Reynaers French doors sit at the premium end of the UK market. Available with dual-colour options, anodised finishes and triple glazing. Secured by Design approved. A strong choice for projects where Reynaers bifold or sliding doors are already specified across the rear elevation.
Smart's aluminium French door range is thermally broken, PAS 24 certified and available in a full range of RAL colours including woodgrain and textured finishes. The most practical choice for a straightforward residential French door where performance matters more than premium branding.
ALUK French doors combine slim profiles with strong thermal performance. Available in double and triple glazed configurations, PAS 24 certified, and produced in a wide range of bespoke colours and sizes.
Timber French doors suit period properties, rural settings, and any project where the character of natural wood matters. A well-specified timber French door, in hardwood, engineered oak, or softwood, brings warmth to the rear of a house that aluminium cannot replicate. Factory-finished in any RAL colour or stain, with multipoint locking and PAS 24 security hardware available.
The main consideration with solid timber is maintenance. Painted timber needs repainting every five to ten years. Hardwood and factory-finished systems hold up considerably better. Quality-engineered timber from manufacturers like Accoya can last for decades with minimal maintenance.
For homeowners who want timber inside without the maintenance of a timber exterior, composite systems are the practical answer.
Velfac French doors have timber on the inside and aluminium on the outside. The aluminium exterior handles the British weather without painting or treating. The timber interior - available in clear lacquer or any RAL colour - gives the room a natural, warm finish. U-values as low as 0.8 W/m²K on triple glazed units. Secured by Design certified. Minimum 40-year life expectancy. Available as single or double casement, with low-threshold options for level access.
Rationel French doors are aluminium-clad timber - FSC-certified timber inside, factory powder-coated aluminium outside. Available in two ranges: AURA and AURAPLUS for contemporary properties; FORMA and FORMAPLUS for traditional British architecture with bevelled edges and angled glazing beads. U-values from 0.79 W/m²K triple glazed. Service life of 71–83 years. Secured by Design certified. Dual colour inside and out at no additional cost.
Double glazing is standard across all systems. Triple glazing available on premium systems. Acoustic glazing for road-facing openings, solar control glazing for south and west-facing doors. Full-height glazed panels as standard; glazing bars available for a Georgian or Crittall-style grid. Side panels and fanlights above the frame increase light on taller openings.
Any RAL or BS colour in gloss, matt or textured powder-coat on aluminium systems. Velfac and Rationel allow different colours inside and out.
French doors open outward by default. Inward-opening is available where external space is limited. One leaf can be bolted as a fixed panel with the other used as a traffic door.
Low-profile as standard. Flush threshold available where the subfloor allows. Part M compliant on new build and extension work.
A French door is a pair of fully glazed doors hinged on either side of a central frame. Both leaves open outward, giving a wide, clear opening. They are one of the most common rear door choices in the UK.
Bifold doors fold back in sections and open up to 90% of the frame width - the right choice for wide openings where maximum aperture is the priority. French doors open on hinges, suit narrower openings and work particularly well on period properties and standard rear elevations. Both are popular choices for London homes.
A patio door has one fixed and one sliding panel. French doors open outward on hinges, giving a wider, more open feel with no fixed panel in the way.
Most external French doors in the UK open outward. This gives more internal floor space and keeps rain from dripping in when opening. Inward-opening is available but less common.
Yes. All systems we install are PAS 24 certified with multipoint locking as standard. The Origin Soho uses an 8-point locking mechanism with a 3-star British Standard Kitemark barrel.
Both are composite timber-aluminium systems made to Scandinavian standards. Velfac is the more contemporary system with very high thermal performance and a minimum 40-year life expectancy. Rationel offers two ranges - AURA for modern properties and FORMA for traditional British architecture - with U-values from 0.79 W/m²K and a service life of 71–83 years.
Yes. All systems we install comply with current Part L (energy efficiency), Part M (accessibility) and Part Q (security) requirements. We handle any Building Control notifications needed.
Most French door installations take one day. New openings requiring structural work may take two days.