The cost to install a skylight in the UK varies depending on the type, size, and complexity of the job.
How Much Does It Cost to Install a Skylight?
Skylight installation costs in the UK typically range from £800 to £1,500, depending on size, type, and roof complexity.
But what affects the cost of skylight installation?
Factors like skylight type, roof structure, and labour complexity all play a role.
In this guide, the skylight specialists at Daniel Roofing And Guttering break down everything you need to know—from material choices to hidden costs—so you can budget with confidence.
Quick Cost Breakdown:
Skylight installation costs vary based on size, type, and labour requirements. Below is a breakdown of typical costs, including materials and professional installation.
Skylight Type | Unit Cost (+VAT) | Installation Cost (Labour) | Total Cost Estimate |
Small Velux Skylight | £500 - £700 | £300 - £500 | £800 - £1,200 |
Large Velux Skylight | £800 - £1,200 | £400 - £600 | £1,200 - £1,800 |
Flat Roof Skylight | £600 - £900 | £400 - £600 | £1,000 - £1,500 |
Electric Skylight | £1,200 - £2,000 | £500 - £700 | £1,700 - £2,700 |
Skylight Replacement | £400 - £800 | £300 - £500 | £700 - £1,300 |
💡 Labour Costs: Most skylight installations require a skilled skylight installer (£200 per day) and an assistant (£150 per day).
Factors That Affect Skylight Installation Costs
Skylight installation costs depend on more than just the window itself. The type of skylight, roof structure, and any additional work required all play a role in the final price. Below, we break down the biggest cost factors so you know exactly what to budget for.
1️⃣ Skylight Type & Size
The size and style of your skylight will significantly impact costs. Larger skylights require more materials and labour, while premium brands like Velux come with higher price tags but better energy efficiency. Fixed skylights (non-opening) are the most affordable, whereas vented and electric models add functionality but increase costs.
Larger skylights cost more due to extra materials and structural reinforcement.
Fixed skylights (non-opening) are cheaper than vented or electric models.
Velux windows are a premium brand but offer excellent energy efficiency.
2️⃣ Roof Type & Complexity
Your roof structure affects both the difficulty and price of installation. Pitched roofs are typically easier to work with, keeping labour costs lower. Flat roofs often require a raised curb or dome, adding to the total expense. If you’re installing a skylight as part of a loft conversion, expect additional reinforcements to be factored in.
Pitched Roofs: Easier installation, reducing labour costs.
Flat Roofs: Require a raised curb or dome, adding to costs.
Loft Conversions: Additional reinforcements may be needed.
3️⃣ Additional Costs
Aside from the skylight itself, there are extra costs to consider. Flashing kits, insulation, and structural reinforcements may be required, especially for older roofs or complex installations. Here’s a breakdown of common additional expenses:
Extra Work | Estimated Cost |
Flashing Kit & Insulation | £100 - £250 |
Structural Alterations | £200 - £500 |
Scaffolding (if needed) | £300 - £600 |
Interior Plastering & Finishing | £150 - £350 |
Velux Blind Installation | £50 - £200 |
Skylight Installation Cost by Type
Not all skylights are created equal—different styles come with different benefits, price points, and installation requirements. Here’s a breakdown of the most popular skylight options and what you can expect to pay.
1. Fixed Skylights (£800 - £1,200 Installed)
A non-opening skylight designed purely for natural light. Best for rooms that don’t need extra ventilation.
✅ Pros: Most affordable, low maintenance.
❌ Cons: Cannot be opened for airflow.
2. Opening Skylights (£1,000 - £1,500 Installed)
A skylight that tilts or fully opens for fresh air. Available in manual or electric options.
✅ Pros: Allows ventilation, reduces condensation.
❌ Cons: Costs more than fixed skylights.
3. Tubular Skylights (£600 - £1,000 Installed)
A small, tunnel-like skylight that channels light into tight spaces like hallways and bathrooms.
✅ Pros: Affordable, easy installation.
❌ Cons: Limited light compared to full skylights.
4. Flat Roof Skylights (£1,000 - £1,500 Installed)
A glass panel or dome skylight designed specifically for flat roofs, often requiring a raised curb.
✅ Pros: Great for modern homes, lets in more light.
❌ Cons: Requires specialist installation.
6. Velux Skylights (£1,200 - £1,800 Installed)
A high-quality, energy-efficient skylight brand designed for pitched roofs.
✅ Pros: Excellent insulation, long lifespan.
❌ Cons: Higher upfront cost.
7. Electric & Smart Skylights (£1,700 - £2,700 Installed)
A remote-controlled skylight that opens and closes via sensors or automation.
✅ Pros: Convenient, perfect for high ceilings.
❌ Cons: Expensive and requires wiring.
How Long Does It Take to Install a Skylight?
Skylight installation times vary depending on size, complexity, and roof type. While simple skylights can be fitted in a few hours, larger or more intricate installations may take a couple of days. Here’s what to expect:
Skylight Installation Type | Estimated Time |
Simple Fixed Skylight | 4 - 6 hours |
Opening Skylight | 6 - 8 hours |
Large Skylight | 1 - 2 days |
Skylight Replacement | 3 - 6 hours |
Complex Roof Work | 2 - 3 days |
Is It Worth Installing a Skylight?
At Daniel Roofing And Guttering, we’re big fans of skylights—and yes, we might be a little biased! But honestly, they’re a no-brainer if you want to brighten up your home, improve airflow, and even cut down on energy bills. Here’s why we love them:
✅ Increases Natural Light – Reduces the need for artificial lighting.
✅ Improves Ventilation – Helps regulate indoor temperature and reduces condensation.
✅ Boosts Home Value – Homes with skylights are more attractive to buyers.
✅ Saves on Energy Bills – Passive solar heating reduces heating costs in winter.
FAQs: Skylight Installation Costs
Got questions? You’re not alone! Here are the most common things homeowners ask about skylight costs, installation, and what to expect.
How much does a Velux skylight cost?
A standard Velux skylight costs £500 - £1,200, with installation bringing the total to £800 - £1,800.
Can I install a skylight myself?
DIY installation is not recommended unless you have roofing experience. Improper installation can lead to leaks, structural issues, and void warranties.
Does a skylight increase property value?
Yes! Skylights can increase your home’s value by improving aesthetics, energy efficiency, and natural lighting.
Do I need planning permission for a skylight?
Most skylight installations don’t require planning permission, but listed buildings and conservation areas may have restrictions.
So, Is a Skylight Right for Your Home?
Installing a skylight is a smart way to bring more natural light into your home, improve ventilation, and boost property value—all while keeping energy costs down. With installation costs ranging from £800 to £1,500, it’s an affordable upgrade with long-term benefits.
Want expert advice or a no-obligation quote? Daniel Roofing And Guttering offers professional skylight installation across Lancashire & Manchester with guaranteed leak-free results.