How Much Does a VELUX Window Cost? (2026 UK Prices)

In 2026, a VELUX roof window costs £330–£1,230 to buy depending on size, opening type and glazing, and £655–£1,555 fully fitted for most standard configurations. Balcony systems are the outlier at £2,400+ for the window alone.

The tables below use figures from MyJobQuote’s VELUX cost guide (updated June 2026), cross-checked against BookaBuilderUK’s 2026 data and merchant pricing, checked July 2026. For a configured estimate, the cost calculator does the arithmetic for you.

VELUX window prices — supply only

Prices vary by size; the columns below show a small window (FK04, 66×98cm) and a large one (UK10, 134×160cm) to bracket the range:

Rules of thumb from the table: top-hung costs roughly £100–£180 more than centre-pivot like for like, solar/electric opening adds £300–£800, and upgraded glazing adds £150–£400.

Fitted prices — supply plus installation

Installation labour on a standard window is about £325 a day for a two-person team (a skilled fitter at ~£200 plus a labourer at £100–£125), and a straightforward install is a one-day job. Add around £100 for flashing and membrane work, and ~£500 for scaffolding where the window can’t be fitted from inside the loft — the most common hidden extra.

Replacing an existing VELUX with a new one in the same opening sits at the bottom of these ranges, since the structural work is already done. Cutting a new opening pulls in building regulations — covered in our skylight cost guide and planning permission explainer.

Which type should you price up?

• Centre-pivot — the default and the cheapest. The sash rotates around a central hinge; fine for most lofts. Our centre-pivot guide covers the options.
• Top-hung — opens outward for a clear view and easier escape-window compliance, at a £100–£180 premium.
• Solar (INTEGRA) — powered opening with no wiring, rain sensor included; see our INTEGRA solar review. The electric version needs a mains feed but costs slightly less per unit.
• Balcony (Cabrio) — the £3,000+ statement option that folds out into a small balcony.

Sizes use VELUX’s letter-number codes (CK04, MK06, UK10 and so on) — the code determines the price band more than anything else, so identify your size before requesting quotes.

Is the VELUX premium worth paying?

VELUX costs more than budget roof-window brands — RoofLITE or Dakstra equivalents can be 30–40% cheaper using the same size codes. What the premium buys: the integrated flashing system installers know by heart (fewer leak call-backs), a 10-year guarantee, better glazing options, and the widest blind and accessory ecosystem. Our takes on whether VELUX is worth it and the best VELUX alternatives go deeper.

If you’re getting quotes: ask for the window’s full spec code, whether flashing is included, whether access/scaffolding is included, and whether the price includes VAT. Those four questions explain almost every gap between quotes.