How much does a Velux window cost in the UK?
A velux window costs £900 to £2,000 in the UK, typically around £1,400 per window, supplied and fitted. Prices reviewed June 2026.
A Velux roof window is priced per window, and the main thing that moves the cost is whether you are swapping an existing one or cutting a brand new opening in the roof. Size, the way the window opens, and whether scaffolding is needed do the rest.
Price your velux window
Adjust for your job and area to get a range. Nothing is sent anywhere.
Velux window cost breakdown
What a velux window typically costs, by the unit:
| What | Typical UK cost |
|---|---|
| Per window, supplied and fitted | £900 to £2,000 per window |
| + New opening rather than a swap | add £250 to £600 per window |
| + Electric or solar opening | add £300 to £800 per window |
| + Scaffolding needed for access | add £400 to £900 per window |
| Typical 2 windows | £1,800 to £4,000 |
What's included in the price?
A typical velux window price includes:
- The roof window and a matching flashing kit
- Removing the old unit or forming the new opening
- Fitting, sealing and weatherproofing
- Internal making good around the reveal
What changes the price?
The things that move a velux window price most:
Like for like swap versus a new opening
Window size and how it opens (manual, electric or solar)
Whether scaffolding is needed for access
Glazing spec and any plastering to finish
Does where you live change the cost?
London and the South East add around 20 to 30 percent on labour.
Common questions
A straight swap into an existing opening with a mid-range window typically costs £750 to £1,200 supplied and fitted, because the hole is already there. A small budget window can come in a little lower.
An electric or solar opening Velux usually adds £300 to £800 over the manual version, so expect roughly £1,300 to £2,500 fitted depending on size.
These are independent guide prices based on typical UK jobs in 2026. Your actual cost depends on your property, spec, access and where you live. Always get at least three written quotes before committing.