--- title: "Bi-Fold Doors Theydon Bois | Aluminium Bi-Folds Fitted in CM16" description: "Aluminium bi-fold doors supplied and fitted across Theydon Bois, Essex (CM16). 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-theydon-bois/#service", "serviceType": "Bi-Fold Door Installation", "name": "Bi-Fold Doors in Theydon Bois", "description": "Aluminium bi-fold doors supplied and fitted across Theydon Bois, Essex (CM16). 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": "Theydon Bois", "address": { "@type": "PostalAddress", "addressRegion": "Essex", "addressCountry": "GB" }, "geo": { "@type": "GeoCoordinates", "latitude": 51.6716, "longitude": 0.1019 } }, "url": "https://www.bifoldsdirectessex.co.uk/bi-fold-doors-theydon-bois/" }, { "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "How much do bi-fold doors cost in Theydon Bois?", "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 Theydon Bois 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 Theydon Bois?", "acceptedAnswer": { "@type": "Answer", "text": "Most Theydon Bois surveys (CM16) 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 Theydon Bois?", "acceptedAnswer": { "@type": "Answer", "text": "Aluminium is what we recommend and fit for almost every Theydon Bois 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 Theydon Bois?", "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 Theydon Bois do you cover?", "acceptedAnswer": { "@type": "Answer", "text": "All of CM16, including Theydon Bois village, Coppice Row, Abridge border, Epping border. 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 Theydon Bois 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": "Theydon Bois", "item": "https://www.bifoldsdirectessex.co.uk/bi-fold-doors-theydon-bois/" } ] } ] } --- 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/) ![Theydon Bois — bi-fold door installation coverage area in CM16](/assets/5-nDLNl21Y.jpeg) 1. [Home](/) 2. [Doors](/doors-essex/) 3. [Bi-Fold Doors](/bi-fold-doors-essex/) 4. Theydon Bois Bi-Fold Doors · Essex # Bi-Fold Doors in Theydon Bois Slim-frame aluminium bi-fold doors fitted across Theydon Bois and the surrounding CM16 villages. Premium specification for the substantial detached and period housing typical of the village. [Get a Free Quote](/contact/) [07903 632039](tel:+447903632039) CM16 · Surveys in 3–5 working days · 10-year workmanship guarantee Local Detail ## Bi-fold doors fitted across Theydon Bois Theydon Bois is a small but desirable village on the edge of Epping Forest, with a strong stock of large detached and period homes. Bi-fold briefs here are typically 4 or 5-pane, paired with garden-room or kitchen extensions. Many CM16 properties sit close to the conservation area around the village green. We confirm consent requirements at survey before specifying any frontage replacement. We're regularly through Theydon Bois on the Loughton/Epping run. Quote slots typically diaried inside five working days. Epping Forest District Council handles building control; Certass notification is included as standard. **Housing stock we work with here:** Large detached, Edwardian and Victorian period homes, and substantial inter-war housing on generous plots near Epping Forest. Our vans are around Theydon Bois Central line station, Epping Forest, the village green most weeks, so survey and aftercare visits in Theydon Bois are easy to diarise. Why Us ## Why Theydon Bois homeowners choose us for bi-folds ### Bi-fold specialists in Theydon Bois leading aluminium systems aluminium systems installed weekly in Theydon Bois. Premium aluminium bi-folds are our single largest product line — not a sideline. ### Own in-house fitting team The same Certass-trained crew on every Theydon Bois install — no agency labour, no rotating sub-contractors. They are part of our small in-house team — no agency labour. ### Survey within stated window Quote slots run 7am–8pm seven days. We hold capacity specifically for CM16 enquiries so you're not waiting weeks. ### Itemised written quote Frames, glass, fitting and disposal listed separately. The number on the page is the number you pay — no surprise extras after install. ### Threshold detailing done properly Bi-fold tracks have to be perfectly level and properly DPM'd. We get this right at survey — it's the single biggest cause of long-term callbacks if it's wrong. ### 10-year workmanship guarantee Every Theydon Bois install — written into your quote, separate to manufacturer warranty. Aftercare adjustments included for the first 12 months. What goes wrong ## Bi-fold problems we get called out to in Theydon Bois ### Bi-fold tracks fouling on uneven thresholds Most Theydon Bois bi-fold callbacks we get asked to fix are tracks that weren't shimmed level at install. Once a track's twisted, the doors won't sit square. We level and DPM every threshold at survey, before doors are ordered. ### Underspecified pane sizes Aluminium bi-folds can run pane sizes most installers won't quote — but only with the right system and the right glass. Going too small for the opening costs you light and visual width. We size to the opening, not to a default catalogue. ### Cheap PVC bi-folds in large openings PVC bi-folds work in small openings but the frames are bulky and the pane size is restricted. For most Theydon Bois rear extensions, aluminium gives slimmer sightlines and a 25–30-year frame life — usually the right call. ### Hardware corrosion from coastal/exposed sites Marine-grade hardware matters for any Theydon Bois install with significant exposure. We specify upgraded rollers and locks where the site demands it — standard hardware doesn't last in the wrong location. Process ## How a Theydon Bois 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 Theydon Bois ![Aluminium bi-fold doors installed on a Theydon Bois home](/assets/7-CiwGEhBz.jpeg) Bi-fold doors in Theydon Bois (CM16) — 2025 3-pane premium aluminium bi-fold systems in anthracite grey RAL 7016 — opening from a refurbished kitchen onto a new patio. Single-day install. FAQs ## Bi-fold door questions from Theydon Bois homeowners ### How much do bi-fold doors cost in Theydon Bois? ### How quickly can you survey a bi-fold door job in Theydon Bois? ### Do you fit aluminium or PVC bi-folds in Theydon Bois? ### How long does a bi-fold installation take in Theydon Bois? ### Which parts of Theydon Bois do you cover? ### Are your bi-fold installs in Theydon Bois guaranteed and certificated? Nearby & Related ## Bi-fold doors in nearby areas - [Bi-fold doors in Epping](/bi-fold-doors-epping/) - [Bi-fold doors in Loughton](/bi-fold-doors-loughton/) - [Bi-fold doors in Chigwell](/bi-fold-doors-chigwell/) ### Related pages - [Bi-fold doors in Essex](/bi-fold-doors-essex/) — full specification, systems and guarantee detail. - [All services in Theydon Bois](/areas/theydon-bois/) — 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 Theydon Bois Free survey across CM16, 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/)