Service area · Essex
Slim-frame aluminium bi-folds, replacement windows and aluminium roof lantern roof lanterns fitted across Chelmsford and the wider CM1–CM3 area. Surveys booked within 3–5 working days, installs handled by our own fitters — never sub-contracted.
Survey within 3–5 working days · 10-year workmanship guarantee · Certass-notified installs
Working in Chelmsford
Chelmsford has one of the broadest property mixes in Essex — Edwardian terraces around Moulsham, 1930s semis through Broomfield, and rapid new-build growth at Beaulieu Park and Channels. Each comes with its own glazing brief, and a Springfield bay-window replacement looks nothing like a Beaulieu Park bi-fold install.
Our fitting van runs the A12, A130 and A414 most weeks, which is why a typical Chelmsford survey is in the diary inside three to five working days. Installs are handled by a in-house fitting team — same crew on day one and day five.
We're regularly on rear extensions in Great Baddow and Writtle, full-house window replacements in Springfield, and roof-lantern fits on single-storey extensions across the CM1 and CM2 postcodes. Chelmsford City Council is the local authority for Certass notification and building control — both handled on your behalf as standard.
Postcodes: CM1, CM2 and CM3 · Neighbourhoods: Springfield, Great Baddow, Moulsham, Writtle, Old Moulsham, Broomfield · Local landmarks: Chelmsford Cathedral, Hylands Park, Central Park, the A12 corridor.

What we install
Every product on this list is installed weekly across the Essex catchment, with the same fitting team and the same warranty pack.
Surveyed and fitted across CM1, CM2 and CM3
Surveyed and fitted across CM1, CM2 and CM3
Surveyed and fitted across CM1, CM2 and CM3
Surveyed and fitted across CM1, CM2 and CM3
Surveyed and fitted across CM1, CM2 and CM3
Surveyed and fitted across CM1, CM2 and CM3
Surveyed and fitted across CM1, CM2 and CM3
Surveyed and fitted across CM1, CM2 and CM3
Why us
The Chelmsford install crew is in-house, not agency — two in-house fitters who run every job from first cut to final clean.
Quote slots run 7am–8pm seven days. We hold capacity specifically for CM1–CM3 enquiries so you're not waiting weeks.
leading aluminium and roof lantern systems all installed weekly in Chelmsford. Premium aluminium is our largest single product line.
10 years on installation, separate to the manufacturer warranty. Aftercare adjustments in the first 12 months are included.
Certass notifications and building control liaison with Chelmsford City Council are included as standard, no extra charge.
Itemised quotes — frames, glass, fitting, disposal. No vague 'fully fitted' line items hiding extras.
Who runs your job
Director, Bi Folds & Windows Direct of Essex Ltd
Billy is the director of Bi Folds & Windows Direct of Essex Ltd — a family-run business incorporated on 20 June 2020 (Companies House No. 12684765) that supplies and installs aluminium bi-fold doors, uPVC and aluminium windows, composite front doors and roof lanterns directly to homeowners across Essex, Kent and Hertfordshire.
What we see locally
Patterns that come up specifically because of Chelmsford's housing stock — typical property age, build style, and local exposure.
A lot of Springfield and Great Baddow housing stock was glazed in the early '90s. Sealed units have a 20–25-year service life, and the misting and condensation we get called out to is almost always end-of-life seal failure rather than poor cleaning.
Original sashes around Moulsham and Old Moulsham can be carefully refurbished or replaced like-for-like with timber-effect frames, improving U-values while keeping the period appearance — important in conservation areas.
We see this often on owner-built extensions in the CM2 area. The bottom track needs to be perfectly level — we shim or re-bed where needed at survey, before we order the doors.
Several Beaulieu Park and Channels-era homes are now 8–12 years in and seeing first-run gasket failure. A replacement gasket set extends frame life by another decade.
Recent work

Customer-supplied install photography is added to this gallery as it becomes available. Names withheld unless explicitly approved.
Our process
01
Booked within your stated response window. We measure, photograph and discuss specification on site — no deposit, no pressure.
02
Frames, glass, fitting and disposal listed separately. The number on the page is the number you pay.
03
Aluminium systems typically 4–6 weeks. PVC and composite doors typically 2–3 weeks. We confirm install date when frames arrive at our yard.
04
Our in-house crew on site. Old frames removed, new units fitted, Certass notification submitted, area swept clean before we leave.
Coverage
Centred on Chelmsford (CM1, CM2 and CM3). We work the full borough plus surrounding villages.
FAQs
Nearby areas
See full coverage details for our Brentwood-area installations.
View Brentwood pageSee full coverage details for our Billericay-area installations.
View Billericay pageSee full coverage details for our Basildon-area installations.
View Basildon pageFree home survey, written itemised quote, no deposit on the visit. Survey slots run 7am–8pm, seven days, normally diaried within 3–5 working days.