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    Harlow — double glazing and rooflight installation coverage area, modernist new-town residential street

    Service area · Essex

    Double Glazing
    in Harlow.

    Modern A-rated double glazing, flat rooflights and aluminium bi-folds fitted across Harlow new town and the surrounding villages. Specialists in modernist post-war housing stock and the Old Harlow conservation area.

    Survey within 3–5 working days · 10-year workmanship guarantee · Certass-notified installs

    10-Year Guarantee
    10+ Years' Experience
    Own Fitting Team
    Family-Run
    Quotes 7am–8pm
    Certass-covered fitters
    Co. No. 12684765

    Working in Harlow

    What it's like fitting glazing in Harlow

    Harlow is the most architecturally distinctive area we work in. Frederick Gibberd's master plan delivered a town where modernist 1950s–1960s housing dominates, and original Crittall-style steel-framed windows are still in service on a meaningful proportion of properties — much of it now in serious need of replacement.

    Modern aluminium replacement frames replicate the slim sightlines of the original Crittall installs without the cold-bridging or corrosion. We've done this kind of replacement repeatedly across CM18, CM19 and CM20.

    Old Harlow and parts of Sawbridgeworth are conservation areas where character must be preserved — careful timber-effect replacements are usually the route. Harlow Council is the local authority. Quote slots inside five working days.

    Postcodes: CM17, CM18, CM19 and CM20 · Neighbourhoods: Old Harlow, Sawbridgeworth, Roydon, Church Langley, Potter Street · Local landmarks: Harlow Town Park, the M11 corridor, Stansted Airport approach.

    New flat glass rooflight installed in the flat-roof extension of a 1960s modernist home in Harlow

    What we install

    Services available in Harlow

    Every product on this list is installed weekly across the Essex catchment, with the same fitting team and the same warranty pack.

    Why us

    Why Harlow customers choose us

    Crittall replacement specialists

    Slim-frame aluminium replicates the original Crittall sightlines without the cold-bridging. We've done this regularly across Harlow's modernist stock.

    Conservation-aware approach

    Old Harlow conservation properties get timber-effect aluminium or like-for-like replacement. We won't suggest changes that would force a planning refusal.

    Survey within 3–5 working days

    CM17–CM20 quote slots open 7am–8pm seven days. Most Harlow visits booked the same week as enquiry.

    Flat rooflight specialists

    1960s flat-roof extensions are a Harlow specialty. We install frameless, hinged and walk-on rooflights with full lead flashing detail.

    Certass-notified, council-clean

    Notification with Harlow Council handled in-house. Compliance certificate posted within 30 days.

    10-year workmanship guarantee

    Every Harlow install. Aftercare adjustments first 12 months.

    Who runs your job

    Billy Hutcherson

    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

    Common double glazing problems in Harlow

    Patterns that come up specifically because of Harlow's housing stock — typical property age, build style, and local exposure.

    End-of-life Crittall steel windows

    Original Harlow Crittall is corroded, cold and frequently single-glazed. Slim-frame aluminium is the modern equivalent that respects the original look.

    Flat-roof rooflights leaking at flashing

    Common on 1960s extensions where the flashing was never properly dressed. Re-detail at the time of replacement is essential.

    Cold-bridging on original 1960s frames

    Single-glazed steel frames lose huge heat. Replacement A-rated argon units transform thermal performance and dramatically reduce condensation.

    Listed/conservation restrictions in Old Harlow

    Old Harlow conservation rules limit external changes. Careful timber-effect replacement is the usual route — we'll confirm what's permitted at survey.

    Recent work

    Recent installs in Harlow

    New flat glass rooflight installed in the flat-roof extension of a 1960s modernist home in Harlow

    Customer-supplied install photography is added to this gallery as it becomes available. Names withheld unless explicitly approved.

    Our process

    How a Harlow install runs

    Bi Folds & Windows Direct installer fitting a new window into a brick opening on an Essex home

    01

    Free home survey

    Booked within your stated response window. We measure, photograph and discuss specification on site — no deposit, no pressure.

    02

    Itemised written quote

    Frames, glass, fitting and disposal listed separately. The number on the page is the number you pay.

    03

    Manufacture

    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

    Install & sign-off

    Our in-house crew on site. Old frames removed, new units fitted, Certass notification submitted, area swept clean before we leave.

    Coverage

    Harlow coverage area

    Centred on Harlow (CM17, CM18, CM19 and CM20). We work the full borough plus surrounding villages.

    FAQs

    Harlow customer questions

    Nearby areas

    We also cover

    Double Glazing in Hertford

    See full coverage details for our Hertford-area installations.

    View Hertford page

    Double Glazing in Chelmsford

    See full coverage details for our Chelmsford-area installations.

    View Chelmsford page

    Double Glazing in Brentwood

    See full coverage details for our Brentwood-area installations.

    View Brentwood page

    Ready to book a Harlow survey?

    Free home survey, written itemised quote, no deposit on the visit. Survey slots run 7am–8pm, seven days, normally diaried within 3–5 working days.