Skylight Installation Costs UK: Your Complete 2025 Guide
- Daniel Cunliffe
- Feb 8
- 7 min read
Updated: May 30
If you're considering installing a skylight, understanding the cost is essential for budgeting. The price of skylight installation can range from £800 to £2,700 depending on factors like the skylight type, roof structure, and additional features.
This guide covers everything you need to know—from basic costs to hidden expenses—so you can plan your skylight installation with confidence. Let’s break down what affects the overall price and explore your options.
How Much Does It Cost to Install a Skylight?
Skylight installation in the UK typically range from £800 to £2,700. The cost depends on various factors such as skylight type, roof structure, installation complexity, and whether any additional work is required.
Several elements play a role in the final price:
Skylight Type: Different styles and brands will impact your overall cost.
Roof Structure: Pitched and flat roofs require different approaches.
Labour Complexity: More complex jobs may take longer and cost more.
At Daniel Roofing And Gutttering, our skylight specialists break down everything you need to know - from material choices to hidden costs—so you can budget with confidence.
Quick Cost Breakdown:
Here’s an overview of typical skylight installation costs, including materials and professional installation. Keep in mind that additional features like electric or solar-powered options can increase the price.
Additional Costs to Consider When Installing a Skylight
While the cost of the skylight itself is a significant portion of the installation expense, there are several additional costs that can increase the overall price. Understanding these hidden costs is essential for budgeting effectively and ensuring there are no surprises when the installation begins. Here’s a breakdown of the common extra costs associated with skylight installations:
1. Flashing Kits & Insulation
Cost: £100 - £250Flashing kits and insulation are crucial for ensuring your skylight is properly sealed and energy-efficient. Flashing kits help waterproof the installation, while insulation ensures that your skylight performs optimally in both winter and summer months, preventing heat loss or excessive solar gain.
2. Structural Reinforcements
Cost: £200 - £500In some cases, older roofs or certain types of roofs may require additional structural reinforcements before a skylight can be installed. This can involve adjusting the rafters or adding support beams to ensure the roof can handle the weight of the skylight.
3. Scaffolding
Cost: £300 - £600 (if needed)Depending on the roof's height and access, scaffolding may be required to safely install the skylight. If scaffolding is needed and is not included in your installer’s services, you may need to hire it separately.
4. Interior Plastering & Finishing
Cost: £150 - £350After the skylight installation is complete, your installer may need to finish the interior, which includes plastering around the skylight and ensuring that the ceiling looks neat. This is particularly relevant if the skylight installation affects the existing ceiling structure.
5. Velux Blind Installation
Cost: £50 - £200If you choose to install a Velux skylight, you may want to add a Velux blind for light control, privacy, or insulation. These blinds can be manually operated or electric, depending on your needs and budget.
6. Roofing Materials
Cost: £60 - £150 per tileIf the installation involves removing tiles or altering the roof, you may need to replace the roofing materials. This cost will depend on the type of roof you have and whether the tiles or shingles need to be replaced.
Additional Notes on Labour Costs
Skylight installations typically require skilled professionals, and the labour cost is often a major component of the overall cost. Here’s what to expect:
Skylight Installer: £200 per day
Assistant: £150 per day
The total labour cost will depend on the complexity of the job and how long it takes to install the skylight. For a standard installation, this can be between 1-2 days, while a larger or more complex installation could take longer, especially if additional work (such as structural reinforcements or scaffolding) is required.
What About Ongoing Maintenance?
Though skylights are generally low-maintenance, there are some ongoing costs you should be aware of:
Cleaning: £50 - £100 per yearSkylights need regular cleaning to ensure they remain clear and functional. This may include removing dust, dirt, and debris, particularly for skylights installed on flat roofs or hard-to-reach places.
Repairs & Maintenance: £100 - £500 (depending on the issue)Over time, skylights can experience wear and tear. Common issues include leaks, seal failures, and condensation. Repairs may include replacing seals, fixing cracks, or addressing any leaks around the installation site.
Factors That Affect Skylight Installation Costs
Skylight installation costs depend on more than just the window itself. Factors like the skylight type, roof structure, and additional work required can significantly affect the final price. Here’s a breakdown of the biggest cost factors so you can budget more effectively:
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 offer superior energy efficiency. Fixed skylights (non-opening) are the most affordable, while vented and electric models offer added functionality but increase the overall cost.
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
The structure of your roof will influence both the difficulty and cost of installation. Pitched roofs are generally easier to work with, reducing labour costs. On the other hand, flat roofs often require additional modifications, such as a raised curb or dome, adding to the total expense. Loft conversions may also require structural reinforcements, which can increase costs.
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
In addition to the skylight itself, you should consider several other costs that may arise, especially if your roof is older or needs extra work. These additional costs are often essential for ensuring the job is completed correctly.
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 types 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 Installing a Skylight Worth It?
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.
