Rooflight Installation Costs in 2025: A Complete Breakdown
If you're planning to install a roof light in 2025, you're probably asking, "How much will it cost?" The answer depends on several factors, including the type of roof light, the complexity of your roof, and whether you're using a frameless, fixed, or opening model.
In this comprehensive guide, we break down typical installation costs in the UK, explain the factors that affect pricing, and provide real homeowner examples using Regal Glass Group frameless roof lights, a preferred choice for both flat and pitched roofs.
Table of Contents
What Impacts the Cost of Rooflight Installation?
Several variables influence the total Cost of your rooflight project:
Key Cost Factors:
Type of rooflight (fixed, opening, frameless, electric)
Roof type (flat or pitched)
Size and weight of the unit
Installation complexity (cutting joists, structural supports)
Glazing specification (double, triple, solar-control)
Interior finish work (plastering, painting, tiling)
Access requirements (scaffolding, cranes)
"We always recommend budgeting for both product and fitting separately. Frameless models like those from Regal Glass might cost more initially, but they’re quicker to install due to prefabrication."
— Lewis Grant, Rooflight Installer (UK Flat Roofing Forum)
Average Rooflight Costs in the UK (2025)
Here's a breakdown of average supply and install costs, depending on rooflight type:
| Rooflight Type | Unit Cost (avg.) | Installation (avg.) | Total Installed Cost |
|---|---|---|---|
| Fixed, framed (standard) | £350–£600 | £700–£1,000 | £1,050–£1,600 |
| Fixed, frameless | £500–£950 | £800–£1,200 | £1,300–£2,150 |
| Opening (manual) | £600–£1,000 | £1,000–£1,400 | £1,600–£2,400 |
| Opening (electric/solar) | £1,200–£1,800+ | £1,400–£1,800+ | £2,600–£3,600+ |
Note: Costs vary by region, roof condition, access, and choice of contractor. Always request a fixed-price quote.
Typical Cost by Roof Type
🔹 Flat Roof (with upstand)
Easier access = often cheaper
Preferred for frameless rooflights
Common in kitchen extensions
Estimated Cost: £1,100–£2,000 (fixed), £1,800–£3,000+ (electric)
🔹 Pitched Roof
May require cutting into rafters
Flashing kits and structural alterations are needed
Estimated Cost: £1,200–£2,500 depending on angle and roofing material
Additional Costs to Consider
Don't overlook these extras:
✅ Building Control Submission: ~£150–£300 (if altering structure)
✅ Planning Permission: Usually not required, but fees apply if needed
✅ Interior Finishing: Plasterboard, paint, re-tiling (~£300–£700)
✅ Access Equipment: Scaffolding or mini-crane hire (£300–£900)
Case Study: Frameless Fixed Rooflight in a Kitchen
🏡 Olivia's Kitchen in Nottingham
"We chose a 1.2m x 2.0m frameless fixed skylight from Regal Glass for our flat roof extension. The supply cost was approximately £900, and the installation cost was £1,100. It's now the centrepiece of our home."
Total Cost: £2,000 (including upstand and plastering)
Case Study: Electric Opening Rooflight in a Bedroom
🏡 Ben's Loft Bedroom in Oxford
"We had a pitched roof and went with a solar-powered opening model. It cost more than we expected, but the airflow is amazing. It was £1,700 for the unit, and £1,500 for installation."
Total Cost: £3,200
💬FAQ: Rooflight Installation Cost Questions
What's the cheapest type of rooflight to install?
Fixed-framed roof lights are usually the cheapest. Frameless fixed units cost more but offer better light and aesthetics.
Do frameless rooflights cost more to install?
Slightly, due to their size and weight, they often save time when finishing since they offer a flush fit.
Do I need scaffolding?
Yes, for most installations, especially on pitched or first-floor roofs. Budget ~£500 unless shared with other works.
Are installation costs lower if I bundle rooflight fitting with an extension?
Absolutely. You'll already have access to structural works, reducing labour duplication.
Comparison Table: Frameless vs Framed Rooflight Installation
| Feature | Frameless Rooflights (Regal Glass Skylights) | Framed Rooflights |
| Aesthetic Appeal | Sleek, all-glass, no visible frame | Traditional appearance |
| Installation Time | Shorter with a ready-to-fit upstand | May require extra finishing work |
| Thermal Efficiency | High (triple-glazed options available) | Moderate (depends on model) |
| Cost | Higher upfront, lower long-term value | Lower upfront |
| Best For | Kitchen extensions, modern homes | Lofts, heritage homes |
Multimedia Support & Installation Resources
Trusted Sources & References
Final Takeaways
✅ Rooflight installation in 2025 typically ranges from £1,100 to £3,500+.
✅ Fixed frameless rooflights from Regal Glass Group offer premium light and aesthetics for flat roofs.
✅ Electric opening units are more expensive, especially in pitched roofs.
✅ Consider hidden costs, such as access, finishes, and regulatory approvals.
✅ Obtain 2–3 quotes and ensure your installer has experience with your specific roof type.
Need a quote or expert advice? Contact Regal Glass for a no-obligation consultation and site assessment.
