Double Glazing Repairs Belfast

Looking for reliable and affordable double glazing repairs in Belfast? C2 Repairs are your local specialists in fixing uPVC windows and doors. With over 10 years of hands-on experience, we restore your double glazing to full working order — without pushing for costly replacements.

From misted glass and draughty frames to faulty hinges, locks, or jammed windows, we handle all common double glazing issues quickly and professionally. Our team is based locally, so you’ll get a fast response and free, honest advice.

Our Double Glazing Repairs in Belfast Include:

Misted or failed glass unit replacement

Window & door draught proofing

Seal, gasket & rubber replacement

Broken hinge & handle replacement

Multi-point lock mechanism replacement

Realignment of dropped doors or stiff windows

Locked or jammed uPVC windows opened & restored

Whether your issue is with a single window or throughout the home, we’ll diagnose the problem, explain your options, and carry out efficient repairs that save you money.

Why Choose C2 for Double Glazing Repairs in Belfast?

10+ years of experience with uPVC repairs

We fix – not replace – where possible

Fast turnaround & local service

Free, no-obligation quotes

2-year guarantee on all work

Trusted by hundreds of Belfast homeowners

At C2 Repairs, we proudly offer double glazing repair services throughout all parts of Belfast — including East Belfast, West Belfast, South Belfast, and North Belfast. Whether you're in the city centre, Ormeau, Malone, Andersonstown, Shankill, Sydenham, or the Castlereagh and Newtownbreda areas, our team is just a call away. We also cover surrounding neighbourhoods like Dundonald, Finaghy, and Holywood. If you're based in or near Belfast and need fast, affordable uPVC window or door repairs, we’re here to help.

Common Signs Your Double Glazing Needs Repair:

  • Condensation or fog between glass panes
  • Cold draughts even with windows closed
  • Difficulty opening or closing windows/doors
  • Handles or locks that are loose, stiff or broken
  • Water leaks or whistling sounds in windy weather

If you notice any of these, call our Belfast team today for a no-pressure inspection.


What Our Customers Say

We take pride in providing honest, high-quality uPVC window and door repairs across Northern Ireland — and our customers agree. With over 400 happy clients and 600+ projects completed, our reviews speak for themselves. Here’s what real homeowners have to say about working with C2 Repairs.

Frequently Asked LEtetrbox & Handle Replacement Questions (FAQs)

Can I change the handle on my uPVC door without replacing the door?

Yes — we offer handle-only replacements using compatible fittings to upgrade the look and function of your existing door.

Do you install draught-proof letterboxes?

Absolutely. All our letterboxes are fitted with internal brushes or seals to minimise heat loss and reduce noise.

How long does a handle or letterbox replacement take?

Most replacements take under 30 minutes and are completed during our first visit.

Can I choose the style or finish of my new handle or letterbox?

Yes – we have a range of colours and designs available to match your existing door or create a fresh new look.

What areas do you serve?

We work across Belfast, Newtownabbey, Ballyclare, Antrim, Carrickfergus, Bangor, Crumlin, Lisburn, Ballymena, and nearby towns.

ARRANGE A FREE QUOTE FOR UPVC WINDOW & DOOR REPAIRS

If you need repairs for your UPVC windows and doors, we can help. Our team of experts can provide a free quote for any repairs you may need. Whether it's a broken lock, a faulty handle, or a damaged seal, we have the skills and experience to get your UPVC windows and doors back in top condition. Contact us today to arrange a free quote and get your repairs underway.