--- title: "Bi-Fold Doors Dartford | Aluminium Bi-Folds Fitted in DA1" description: "Aluminium bi-fold doors supplied and fitted across Dartford, Kent (DA1, DA2 and DA9). Free survey in 3–5 working days, own fitting team, 10-year workmanship guarantee." lang: en-GB json-ld: | { "@context": "https://schema.org", "@graph": [ { "@type": "Service", "@id": "https://www.bifoldsdirectessex.co.uk/bi-fold-doors-dartford/#service", "serviceType": "Bi-Fold Door Installation", "name": "Bi-Fold Doors in Dartford", "description": "Aluminium bi-fold doors supplied and fitted across Dartford, Kent (DA1, DA2 and DA9). Free survey in 3–5 working days, own fitting team, 10-year workmanship guarantee.", "provider": { "@id": "https://www.bifoldsdirectessex.co.uk/#business" }, "areaServed": { "@type": "City", "name": "Dartford", "address": { "@type": "PostalAddress", "addressRegion": "Kent", "addressCountry": "GB" }, "geo": { "@type": "GeoCoordinates", "latitude": 51.4464, "longitude": 0.2174 } }, "url": "https://www.bifoldsdirectessex.co.uk/bi-fold-doors-dartford/" }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "How much do bi-fold doors cost in Dartford?", "acceptedAnswer": { "@type": "Answer", "text": "Price depends on the opening width, the number of panes, the glass spec and the threshold detail, so we don't publish figures that would only mislead. Every Dartford quote is itemised — frames, glass, fitting and disposal listed separately — after a free survey." } }, { "@type": "Question", "name": "How quickly can you survey a bi-fold door job in Dartford?", "acceptedAnswer": { "@type": "Answer", "text": "Most Dartford surveys (DA1, DA2 and DA9) are booked within 3–5 working days. Quote slots run 7am–8pm, seven days a week, and there's no deposit taken at the visit." } }, { "@type": "Question", "name": "Do you fit aluminium or PVC bi-folds in Dartford?", "acceptedAnswer": { "@type": "Answer", "text": "Aluminium is what we recommend and fit for almost every Dartford project — slimmer sightlines, larger pane sizes and a far longer frame life. If you want to compare, read our guide on aluminium vs PVC bi-fold doors." } }, { "@type": "Question", "name": "How long does a bi-fold installation take in Dartford?", "acceptedAnswer": { "@type": "Answer", "text": "A straightforward replacement into an existing opening is usually a single day. If the opening is being formed or altered as part of an extension, we survey after first-fix and fit once the structural work and floor levels are finalised." } }, { "@type": "Question", "name": "Which parts of Dartford do you cover?", "acceptedAnswer": { "@type": "Answer", "text": "All of DA1, DA2 and DA9, including Greenhithe, Stone, Bean, Wilmington, Crayford. Same survey, same in-house fitting team and same guarantee wherever you are in the area." } }, { "@type": "Question", "name": "Are your bi-fold installs in Dartford guaranteed and certificated?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. Installations are Certass-notified on your behalf within 30 days, aluminium frames carry a 25–30 year manufacturer warranty depending on system, sealed units carry 10 years, and our workmanship is guaranteed for 10 years in writing." } } ] }, { "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.bifoldsdirectessex.co.uk/" }, { "@type": "ListItem", "position": 2, "name": "Doors", "item": "https://www.bifoldsdirectessex.co.uk/doors-essex/" }, { "@type": "ListItem", "position": 3, "name": "Bi-Fold Doors", "item": "https://www.bifoldsdirectessex.co.uk/bi-fold-doors-essex/" }, { "@type": "ListItem", "position": 4, "name": "Dartford", "item": "https://www.bifoldsdirectessex.co.uk/bi-fold-doors-dartford/" } ] } ] } --- We use essential cookies to run this site and, with your consent, analytics cookies to measure enquiries. [Cookie Policy](/cookie-policy/) AcceptReject [![Bi Folds & Windows Direct of Essex logo](/assets/bde-logo-DjJb1e2T.png)](/) Services Areas [About](/about/)[Our Work](/our-work/)[Reviews](/reviews/)[Contact](/contact/) [07903 632039](tel:+447903632039)[Get a Free Quote](/contact/) Summer Offer Bi-folding doors **£680 per panel** [Get a free quote](/contact/) ![Dartford — bi-fold and aluminium window coverage area, suburban DA1 residential street](/assets/20-Cidp8mmx.jpeg) 1. [Home](/) 2. [Doors](/doors-essex/) 3. [Bi-Fold Doors](/bi-fold-doors-essex/) 4. Dartford Bi-Fold Doors · Kent # Bi-Fold Doors in Dartford Premium aluminium bi-fold doors, slim-frame windows and roof lanterns fitted across Dartford, Greenhithe and Stone. Direct access from Essex via the Dartford Crossing — same fitting team, same standards. [Get a Free Quote](/contact/) [07903 632039](tel:+447903632039) DA1, DA2 and DA9 · Surveys in 3–5 working days · 10-year workmanship guarantee Local Detail ## Bi-fold doors fitted across Dartford Dartford has expanded rapidly off the back of the Bluewater development and the Ebbsfleet International rail link. New-build estates around Greenhithe and Stone are the largest single source of bi-fold and lantern enquiries we get from DA postcodes. Older Dartford housing — Crayford, Wilmington and the older town centre — runs to interwar semis with bay windows and original timber frames overdue for replacement. The mix is nearly identical to inland Essex stock, which is why our standard product range fits the brief without compromise. We come over the QE2 Bridge two or three times a week. Dartford Borough Council handles building control; Certass notifications are done in-house. Most DA1, DA2 and DA9 quote slots are diaried inside five working days. **Housing stock we work with here:** Recent new-build estates around Greenhithe/Stone, plus older interwar semis and original timber-framed Victorian terraces around Crayford and the town centre. Our vans are around Bluewater Shopping Centre, the QE2 Bridge / Dartford Crossing, Bluewater quarry walks most weeks, so survey and aftercare visits in Dartford are easy to diarise. Why Us ## Why Dartford homeowners choose us for bi-folds ### Direct via the Dartford Crossing We're not a long way away — the QE2 Bridge puts most of Dartford 30–40 minutes from our base. Same crew, same response standards. ### Aluminium bi-fold specialists Both systems installed weekly. Premium aluminium bi-fold systems carry long manufacturer warranties and a wide range of profile and colour options. ### Survey within 3–5 working days DA postcode enquiries handled the same week. Quote slots 7am–8pm seven days. ### Certass-notified, council-clean Notification through Dartford Borough Council on your behalf — no extra paperwork on your side. ### Premium aluminium spec We won't fit budget aluminium on a DA9 new-build extension. Specification matched to the property and the neighbours. ### 10-year workmanship guarantee Written into every quote. Aftercare adjustments first 12 months. What goes wrong ## Bi-fold problems we get called out to in Dartford ### New-build builder-spec frames failing early A surprising number of Greenhithe and Stone homes shipped with low-spec PVC frames that are already showing seal failure 8–10 years in. Aluminium replacements are now common. ### Bi-fold tracks on uneven new-build patios New-build patios occasionally settle inconsistently. We re-bed thresholds at survey rather than fight a sticking door for years. ### Original timber sash decay around the town centre Older Dartford terraces have original sashes with rotting frames. Either fully replace or refurbish with timber-effect like-for-like — both routes available. ### Trickle vents missing on pre-2022 installs Current Part F requires trickle ventilation. We include compliant vents on every replacement, regardless of what the old frame had. Process ## How a Dartford bi-fold install runs 1. 01 ### Free survey We measure the opening, check the threshold and the lintel, and talk through pane counts and stacking direction on site. 2. 02 ### Configuration & spec Pane split, stacking side, traffic door position, RAL frame colour, glass spec and threshold type — all confirmed in writing. 3. 03 ### Manufacture Frames are made to your surveyed sizes. We confirm the install date once they leave the factory. 4. 04 ### Installation Old doors out, track laser-levelled and DPM'd, frames set square, every panel tested through its full fold before we leave. 5. 05 ### Sign-off & guarantee Operation walk-through, Certass notification within 30 days, and a 10-year workmanship guarantee in writing. Recent Work ## Recent bi-fold door jobs near Dartford ![Four-panel grey aluminium bi-fold doors fitted at the rear of a modern detached new-build home in Greenhithe, Dartford](/assets/23-B_OtF7Yd.jpeg) Bi-fold doors in Greenhithe (DA9), Dartford — 2025 4-pane premium aluminium bi-fold systems in slate grey, opening from a kitchen-diner onto a new patio. Single-day install, Certass-notified, full warranty pack issued on completion. FAQs ## Bi-fold door questions from Dartford homeowners ### How much do bi-fold doors cost in Dartford? ### How quickly can you survey a bi-fold door job in Dartford? ### Do you fit aluminium or PVC bi-folds in Dartford? ### How long does a bi-fold installation take in Dartford? ### Which parts of Dartford do you cover? ### Are your bi-fold installs in Dartford guaranteed and certificated? Nearby & Related ## Bi-fold doors in nearby areas - [Bi-fold doors in Gravesend](/bi-fold-doors-gravesend/) - [Bi-fold doors in Basildon](/bi-fold-doors-basildon/) - [Bi-fold doors in Brentwood](/bi-fold-doors-brentwood/) ### Related pages - [Bi-fold doors in Essex](/bi-fold-doors-essex/) — full specification, systems and guarantee detail. - [All services in Dartford](/areas/dartford/) — windows, doors, lanterns and glazing locally. - [Sliding doors](/sliding-doors-essex/) — the alternative where you want fewer, wider panes. - [Aluminium vs PVC bi-fold doors](/aluminium-vs-pvc-bifold-doors/) — how the two compare on sightlines and lifespan. ## Get a free bi-fold door quote in Dartford Free survey across DA1, DA2 and DA9, usually within 3–5 working days. Itemised written quote, no deposit at survey. [Get a Free Quote](/contact/) [07903 632039](tel:+447903632039) ![Bi Folds & Windows Direct of Essex](/assets/bde-logo-DjJb1e2T.png) Family-run installer of bi-fold doors, aluminium windows, double glazing and roof lanterns. Covering Essex and the surrounding counties with 10+ years of trade experience. [07903 632039](tel:+447903632039) [info@bifoldsdirectessex.co.uk](mailto:info@bifoldsdirectessex.co.uk) [](https://facebook.com/bifoldsdirectessex)[](https://instagram.com/bifoldsdirectessex)[](https://www.linkedin.com/company/bifolds-windows-direct/) Glazing & Windows - [Window installation Essex](/window-installation-essex/) - [Double glazing](/double-glazing-essex/) - [Aluminium windows](/aluminium-windows-essex/) - [Roof lanterns & rooflights](/roof-lanterns-essex/) - [Conservatories](/conservatories-essex/) - [All glazing services](/glazing-essex/) Doors - [Bi-fold doors Essex](/bi-fold-doors-essex/) - [Sliding doors](/sliding-doors-essex/) - [Composite doors](/composite-doors-essex/) - [Front doors](/front-doors-essex/) - [All door services](/doors-essex/) Guides - [All guides & advice](/blog/) - [Bi-folding door benefits](/bi-folding-door-benefits/) - [Summer upgrade guide](/summer-window-and-door-upgrades/) - [Aluminium vs PVC](/aluminium-vs-pvc-bifold-doors/) - [Double vs triple glazing](/double-glazing-vs-triple-glazing/) - [Window energy ratings](/window-energy-ratings-explained/) - [Signs you need new windows](/signs-you-need-new-windows/) - [Installation process](/window-installation-process/) Areas We Cover - [Loughton](/areas/loughton/) - [Epping](/areas/epping/) - [Theydon Bois](/areas/theydon-bois/) - [Chigwell](/areas/chigwell/) - [Woodford](/areas/woodford/) - [Chelmsford](/areas/chelmsford/) - [Brentwood](/areas/brentwood/) - [Billericay](/areas/billericay/) - [Hertford](/areas/hertford/) Hours - Mon–Fri · 7am–6pm - Sat–Sun · 9am–5pm - Quotes: 7am–8pm daily We accept Visa Mastercard Amex PayPal Apple Pay Bank transfer also accepted · No card surcharges © 2026 Bi Folds & Windows Direct of Essex Ltd · Company No. 12684765 [Privacy](/privacy-policy/)[Terms](/terms-conditions/)[Cookies](/cookie-policy/)