Service
Velux Installation Cost 2026
Real 2026 prices for Velux and Fakro roof window installation in Buckinghamshire — including flashing kit, plaster reveal and a tidy finish inside.
- Standard Velux GGL pricing
- Centre-pivot vs top-hung
- Triple-glazed upgrade
- Flashing kit for tile, slate or low-profile
- Internal plasterboard reveal
- Velux & Fakro supported
Typical 2026 prices
Fitted from scaffold or tower — including flashing kit and internal reveal.
- ▸Small GGL CK02 (55×78cm), tile: £1,250 – £1,650
- ▸Standard GGL MK04 (78×98cm), tile: £1,450 – £1,950
- ▸Large GGL UK04 (134×98cm), tile: £1,750 – £2,400
- ▸Slate flashing upgrade: +£100 – £180
- ▸Triple-glazed upgrade: +£250 – £450
- ▸Electric (GGU INTEGRA): +£450 – £750
What the price always includes
Window, correct flashing kit (EDW tile, EDL slate, EDZ low-profile), insulated collar, internal plasterboard reveal, plaster skim, paint-ready finish. We don't quote leaving the inside untouched.
FAQs
Do I need building regs for a new Velux?+
Usually no for like-for-like; sometimes yes for a new opening (especially affecting bedroom escape). We handle the notification.
Can you fit same day?+
Most single installs are 1–2 days — day one window, day two plaster.
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