How much does it cost to replace a double glazed unit in London?

A typical misted or failed double glazed unit costs around £120-£280 to replace in London, depending on size, glass spec and access. You replace only the sealed unit, not the frame, which is far cheaper than a new window.

Do glaziers charge a call-out fee?

Many do, especially at night, £80-£150 is common before any work starts. Glazing London charges no call-out fee: we quote from your photos or description first, and the agreed price is what you pay, day or night.

Is an emergency glazier more expensive at night?

Out-of-hours work usually carries a premium because two-person crews, van stock and late glass merchants all cost more. Expect roughly 20-50% above daytime prices across the trade. Getting a fixed price before the visit is the best protection.

Glazier Cost London 2026: Honest Price Guide

Q: How much does a glazier charge per hour in London?

Most London glaziers price per job rather than per hour, but where hourly rates apply expect roughly £60-£90 per hour for standard work. A fixed quote before work starts, which is how Glazing London prices, is usually better value and removes surprises.

Q: Is it cheaper to repair or replace a window?

If the frame is sound, repairing, new sealed unit, hinges, gearbox or seals, is almost always cheaper than replacement. A repair typically runs £100-£300; a new fitted window starts around £450-£700. An honest glazier will tell you when repair is enough.

A glazier in London typically costs £90-£180 to replace a single pane, £120-£280 to replace a misted double glazed unit, and £180-£400 for an emergency call-out with glass fitted on the spot. Hourly rates, where used, sit around £60-£90. The honest answer to "what will mine cost?" is a fixed quote from a photo, which takes minutes on WhatsApp and costs nothing.

i.Why glazing prices vary so much

Two broken windows can look identical from the pavement and still be £150 apart on the invoice. Five things set the price of almost every glazing job:

Glass type

Standard float is cheapest; toughened costs more and is made to order; laminated, acoustic and fire-rated glass step up again. Building Regulations decide some of this for you: glass in doors and low windows must be safety glass.

Size & thickness

Price scales with area and spec: a small 4mm pane is a different job to a 6.8mm laminated sheet two metres wide. Odd shapes and curves add cutting time.

Access

Ground-floor front window? Easy. Third-floor sash over a conservatory roof? That's ladders, extra hands and time, and sometimes a tower. Access is the most underestimated cost driver.

Time of day

Out-of-hours work costs more across the whole trade, typically 20-50% over daytime rates. What matters is knowing the number before anyone travels.

The fifth driver is the quoting model itself, which deserves its own section, because it's where Londoners most often overpay.

ii.Call-out fees: the quiet £150

Plenty of firms charge a call-out fee, often £80-£150, just to arrive, before any glass is measured. At 2am, distressed, with wind coming through a smashed pane, few people say no. That's precisely when it's most expensive to say yes.

How we price instead Send photos of the damage to 07399 253464 on WhatsApp. We measure from your photos where possible, quote a fixed price, and only travel once you've agreed it. No call-out fee, no on-the-doorstep renegotiation, at 2pm or 2am.

iii.Typical prices by job

These are the ranges we see across Central and North London in 2026. Every property is different, treat them as a sanity check against any quote you're given, including ours.

Single glazing replaced (per pane)£90-£180

Float or obscure glass, cut to size and puttied or beaded in. Same-day in most cases, see glass cut to size.

Misted / failed double glazed unit£120-£280

Unit only, the frame stays. Toughened or oversized units sit at the top of the range. Full detail in our misted glazing guide.

Emergency glazing, out of hours£180-£400

Made safe and reglazed on the spot where stock allows; made safe plus next-day glass otherwise. See emergency glazing.

Boarding up (per opening)£120-£250

18mm board, fixed without damaging sound frames where possible. Shopfronts cost more: bigger boards, bigger crew.

uPVC window repair (hinges, gearbox, seals)£100-£250

Most faults are parts, not windows. Our uPVC repair fault-finder shows what usually fails.

New uPVC window, supplied & fitted£450-£700

A-rated double glazing with FENSA certificate. Ours are made in our own factory, so no merchant mark-up.

iv.Repair or replace? The £300 question

The biggest saving in glazing isn't haggling; it's not replacing what can be repaired. If the frame is sound, a new sealed unit, hinge set or gearbox restores the window for a fraction of replacement cost. We say so on site, in writing. When a frame is genuinely done (rotten timber, cracked uPVC, a warped opener), replacement is the honest call, and because our sister company Prime Fabrication makes our uPVC and aluminium frames, the factory-direct route keeps that honest too.

v.Getting a quote that means something

A useful glazing quote, from anyone, should name the glass spec (type and thickness), state whether it includes making safe and waste removal, and be fixed rather than "from". If a price can change once the van arrives, it isn't a price; it's an opening offer. Get yours in writing first: free survey & quote, or photos straight to WhatsApp for the fastest answer.

vi.Quick answers

How much does a glazier charge per hour in London?

Where hourly rates apply, roughly £60-£90 per hour. Most reputable firms, us included, quote a fixed price per job instead, which protects you from slow clocks.

Do you charge a call-out fee?

No. We quote from photos or a description before travelling, 24/7, and the agreed price is the invoice price. Call 07399 253464.

Is night-time emergency glazing more expensive?

Across the trade, yes, typically 20-50% above daytime rates. The fix is a fixed quote before the visit, so the premium is visible instead of discovered.

Is it cheaper to repair or replace a window?

If the frame is sound, repair, usually £100-£300, beats a £450+ replacement. If the frame has failed, replacement is cheaper than repeat repairs. An honest survey tells you which side you're on.

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