Expert Window Installation, Repairs & Maintenance

From fitting new windows to fixing old ones, we bring expert care, precision and long-lasting results to homes and businesses across the region.

A close-up view of modern double-glazed UPVC window profiles placed on a windowsill, showcasing the cross-section and construction of energy-efficient frames. Natural light reflects through the clean glass, with greenery visible outside.A professional installer checking window alignment with a spirit level during frame installation.
Our Accreditations
FENSA Approved Installer logo for window and door installations.Glass and Glazing Federation (GGF) member logo.FENSA Approved Installer logo for window and door installations.Glass and Glazing Federation (GGF) member logo.FENSA Approved Installer logo for window and door installations.Glass and Glazing Federation (GGF) member logo.FENSA Approved Installer logo for window and door installations.Glass and Glazing Federation (GGF) member logo.FENSA Approved Installer logo for window and door installations.Glass and Glazing Federation (GGF) member logo.
Corner view of a modern aluminium sliding door and window installation, reflecting garden greenery.

Trusted Window & Door Specialists in Essex

The Window Expert brand star icon.
Expert Repairs & Installations

From quick fixes to full window and door replacements – we handle it all with care and precision.

The Window Expert brand star icon.
Decades of Hands-On Experience

With 30+ years in the trade, we work across PVC, timber, aluminium and composite systems.

The Window Expert brand star icon.
Certified & Fully Accredited

FENSA registered, GGF members, and Renolit-qualified for professional, guaranteed work.

Our Services

Window and Door Repairs, Replacements and Installations Across Essex

If you’re looking for a window specialist in Essex, The Window Expert offers a complete, reliable service - from UPVC window repairs to composite door replacements and everything in between.

Window and door repairs

We repair all types of windows and doors including PVC, timber, aluminium, composite and more. Whether it’s a draughty window, a jammed lock or a faulty hinge, we offer fast, professional repairs that restore security, function and peace of mind. You don’t always need a full replacement - just honest, expert fixes that last.

learn more
Technician repairing a white door handle using a screwdriver, wearing protective gloves.
Glazier replacing a misted double-glazed window using suction tools, wearing a face mask and gloves.

Double glazing repairs

We fix misted double glazing, broken seals, faulty locks and more. Whether your windows have lost their insulation or your locks no longer feel secure, we offer cost-effective double glazing repairs that bring your units back to life. Improve comfort, energy efficiency and security without the need for full replacements.

learn more

UPVC to Timber, We Fit It All

We supply and install windows and doors in UPVC, timber, aluminium and composite finishes. Whether you’re upgrading for style, performance or security, we help you choose the right material and fit it with precision. Every installation is handled by experienced professionals and built to last in both domestic and commercial settings.

learn more
Display of UPVC, timber-effect and composite window frame cross-sections in various finishes.
Close-up of modern window and door handles on a glazed frame, ready for hardware servicing or replacement.

Handle, hinge and hardware replacements

We replace faulty or broken handles, hinges, locks and other window and door hardware across all frame types.Whether your parts are worn out, damaged or no longer available, we source high-quality replacements, including solutions for discontinued systems, to keep your windows and doors working smoothly and securely.

learn more

Full replacements

We carry out full window and door replacements for homes, extensions and new builds. Whether you’re upgrading tired frames, extending your space or starting from scratch, we provide expert advice and high-quality installations that improve appearance, efficiency and security - all tailored to your property.

learn more
Installer checking level on a newly fitted window frame during a full window replacement.
Modern commercial building under construction with large glazed panels and aluminium framing.

Commercial and residential projects

We support both residential and commercial clients with expert window and door solutions. From large-scale developments and office fit-outs to home upgrades and renovations, we handle projects of all sizes. Our experience includes working with discontinued systems and bespoke requirements to meet technical and design specifications with precision.

learn more

FENSA-registered installations

All our window and door installations are carried out by FENSA-registered professionals. This means your project meets current building regulations and comes with an insurance-backed guarantee. Whether you’re replacing old windows or upgrading for energy efficiency, you’re fully covered with certified work you can trust.

learn more
Newly installed double-glazed window in a stone wall, showcasing a compliant FENSA-approved installation.
Clear communication

We keep you in the loop at every step, with transparent quotes, scheduled visits, and friendly updates throughout.

Efficient turnaround

From first visit to final fit, we work quickly and cleanly, with minimal disruption to your home or business.

Built to last

We only use trusted materials and proven techniques, so every repair or installation stands the test of time.

What Our Customers Say

“Quick, tidy, and absolutely faultless.”

We had a broken lock on our back door and The Window Expert came out the next day. They fixed it on the spot, no mess, no stress. Highly recommend for anyone needing fast and honest service.

Karen Miles
Southend-on-Sea
“They treated our home with complete respect.”

From the first visit to the final fit, the team was polite, professional and clearly knew their stuff. We had all our upstairs windows replaced and couldn’t be happier with the result.

Ravi & Ayesha Patel
Rayleigh
“Restored my shopfront without disruption.”

As a small business, we were worried about downtime, but The Window Expert worked around our hours and got the job done with zero disruption. It looks brand new.

James Tucker, Café Owner
Chelmsford
“Genuinely went above and beyond.”

What started as a small hinge repair turned into a full assessment of all our windows, and I’m so glad it did. They spotted issues we hadn’t noticed and sorted everything in one visit. Professional, friendly, and no upselling.

Claire Jennings
Billericay

Frequently Asked Questions

Do you always need to replace faulty windows or doors?
+

Not at all. Many problems can be resolved with a cost-effective repair. The Window Expert will assess your setup and offer honest advice on the best solution.

Do you charge for surveys?
+

No - all site visits and surveys are free and come with no pressure or obligation.

Can you repair older or discontinued window systems?
+

Yes. With over three decades of industry knowledge, we can often repair or upgrade handles, locks and systems that others can’t.

Do you offer guarantees on your work?
+

Absolutely.

12 months on all repairs and hardware
5 years on sealed unit installations
10 years on new windows and doors

What areas do you cover?
+

We provide window and door services throughout Essex, including Southend, Leigh-on-Sea, Chelmsford, Rayleigh, Basildon, Brentwood and surrounding towns.

Contact Us

Got a question? We’re here to help.

Whether you’re planning a new installation or need urgent repairs, feel free to get in touch. We’re always happy to offer advice and provide a no-obligation quote.

Icon
info@example.com

Have a project in mind? Drop us a message and we’ll get back to you soon.

Email Us
Icon
(888) 456 7890

Need to speak to someone? Give us a call, we’re always happy to chat.

Call Us Now
Icon
410 Sandtown, California 94001, USA

Proudly serving homes and businesses across Essex.

How can we help you today?
If you are able to upload an image, or images of the issue, it would help us identify a solution faster.
Max file size 10MB.
Uploading...
fileuploaded.jpg
Upload failed. Max size for files is 10 MB.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.