Same day
When possible
No call-out
Fee
FENSA
Registered
NZR Windows and Doors provides fast, professional window and door repair services for homes across London, Kent, Essex, and the South East. Our in-house team repairs all major window and door systems for homeowners, landlords, and property managers.
Whether it's a one-off repair or regular maintenance, we keep your windows and doors secure, smooth, and working as they should.
Residential repairs & maintenance
Honest, in-house repairs for homes across London, Kent & the South East — fixed first time, no replacing what doesn't need it.
Misted Glass & Double Glazing
We replace blown or misted sealed units to restore clarity and insulation — perfect match to your existing frames, no full replacements needed.
Lock Repairs & Security Fixes
Jammed window locks, faulty door mechanisms, broken handles — restored fast. Multipoint, sash, and euro cylinder systems all covered.
Door Realignment & Adjustment
Doors that drag, stick, or won't shut properly — we re-hang and realign uPVC, composite, and aluminium doors for smooth, sealed operation.
Window Mechanism Repairs
Friction stays, hinges, trickle vents, handles and sash cords — clean, precise repairs that bring your windows back to original feel.
Draughty Seals & Weatherproofing
Cold air, condensation or whistling? We replace damaged gaskets, seals and weatherstrips to keep your home warm, quiet and efficient.
General Wear & Tear Maintenance
Noisy doors, loose hardware, ageing windows, cracked panes — sensible upkeep for homeowners, landlords and managing agents.
Repairs & Hardware We Handle
From bifold door adjustments to lock replacements and handle repairs — our engineers handle all types of window and door maintenance across the South East.
Expert Window & Door Hardware Repairs
Our qualified engineers carry a comprehensive stock of replacement parts for on-the-spot repairs. From euro cylinders and multipoint locks to friction stays, hinges, and gaskets — we source parts for all major manufacturers including Yale, Mila, ERA, Avocet, and Fullex.
Bifold door specialists: We service and repair aluminium bifold doors from Origin, Schuco, Reynaers, Smart Systems, and more. Common issues include stiff operation, misalignment, worn rollers, and faulty locks.
Lock upgrades: Need to upgrade your door security? We fit anti-snap, anti-bump, and anti-pick euro cylinders rated to TS007 3-star and Sold Secure Diamond standards — ideal for insurance requirements.
Same-day service available: For urgent lock-outs, security issues, or broken mechanisms, we offer same-day callouts across London, Kent, and the South East. Call us for fast, reliable repairs.
Request a Repair Quote
Tell us what needs fixing and we'll get back to you ASAP.
Home repair & maintenance FAQs
Can you replace just the glass, not the whole window?
In most cases, yes. If the frame is in good condition, we can replace just the sealed unit (the glass) at a fraction of the cost of a new window. This is ideal for misted double glazing where the seal has failed.
How long do repairs take?
Most repairs are completed within an hour or two. If parts need to be ordered, we'll arrange a convenient time to return. Our engineers carry a comprehensive stock of common parts for on-the-spot fixes.
Do you repair all window types?
We repair uPVC, aluminium, timber, and composite windows and doors from all major manufacturers including Origin, Schuco, Rehau, Kommerling, and more.
Do you work with landlords and letting agents?
Yes. We work with landlords, property managers, and managing agents across London, Kent, Essex and the South East. We can provide detailed reports and invoices for your records.
Is there a call-out fee?
We don't charge a call-out fee for standard repair jobs in our coverage area. We'll confirm any costs upfront before attending so there are no surprises.
Do you offer emergency repairs?
Yes. For urgent security issues like broken locks, smashed glass, or doors that won't secure, we offer a 24/7 emergency service. Call our emergency line for immediate assistance.
Can you upgrade my door locks for insurance?
Absolutely. We fit anti-snap, anti-bump, and anti-pick euro cylinders rated to TS007 3-star and Sold Secure Diamond standards — often required by home insurance policies.
Do you repair bifold doors?
Yes, we specialise in aluminium bifold door repairs including Origin, Schuco, Reynaers, and Smart Systems. Common issues we fix include stiff operation, misalignment, worn rollers, and faulty locks.