Double glazing price per window

When quotes arrive as a single big total, they’re hard to compare — especially if each installer has counted your windows slightly differently. Reducing everything to a price per window fixes that. It normalises the numbers, exposes odd inclusions, and makes it obvious when one quote is quietly pricing in a higher spec than another. Here’s how the per-window figures typically stack up.

Typical price per window by style

These are attributed typical UK ranges for a single, standard-sized uPVC unit, supplied and fitted. Larger openings, upstairs access, timber or aluminium frames and premium glass all sit above these figures.

The per-window rate usually falls a little as the job grows, because the fixed costs of the survey and the visit are shared across more units — which is exactly the logic behind a whole-house deal. To sanity-check the totals as well, cross-reference the average UK prices guide.

What changes the per-window price

• Size: a large opening uses more frame and glass and is heavier to handle.
• Opening lights: more opening sections mean more hinges, handles and sealing.
• Glass spec: a higher energy rating, acoustic or toughened glass adds cost.
• Frame material and colour: woodgrain foils, greys and non-white finishes cost more than standard white uPVC.
• Access: upstairs and awkward positions add labour and sometimes scaffolding.

Because these variables move the number so much, a per-window figure only means something when the spec is spelled out. A cheaper per-window price with a thinner spec isn’t a better deal — our guide on why cheap double glazing costs more explains why, and the fair-deal checklist helps you confirm the number is sound.

Per-window value over time

The purchase price is only half the story: a better unit keeps working for you every year on your energy bills. It’s worth reading up on how glazing tech lowers your bills and what energy-efficient windows can save — the Energy Saving Trust reports efficient glazing can trim typical heating costs, depending on your home. And if paying per window in one go is a stretch, there are funding routes if you’d rather spread the cost and pay-monthly window options, subject to eligibility and a home survey.