Flat roofs are very common in modern homes, extensions and commercial buildings. However, one problem that many flat roofs face is low natural light. A roof lantern is a perfect solution for this issue. It brings more daylight into the room, improves ventilation, and makes the interior look bigger and more stylish. We will discuss roof lanterns for flat roofs, why they are popular, what materials are used, how they are installed, their benefits, costs, maintenance needs, and buying tips.
What Are Roof Lanterns?
A roof lantern is a glass structure installed on a flat roof. It is shaped like a small pyramid or skylight with angled glass panels. It allows sunlight to enter from multiple angles. Roof lanterns are similar to skylights but they are raised and designed with a frame, which gives them a decorative look from both inside and outside.
Difference Between Roof Lanterns & Skylights
While both provide natural light, roof lanterns stand higher and have a more architectural design. Skylights are usually flat and sit flush with the roof. Roof lanterns create a feature element, whereas skylights are more minimal.
Why Roof Lanterns Are Popular on Flat Roofs
Roof lanterns have become very popular in home extensions, kitchens, dining rooms, and commercial spaces. There are several reasons for this trend:
Modern Homes Need More Natural Light
Most modern designs focus on open spaces and bright interiors. Roof lanterns allow natural light to flood the room even if there are limited windows.
Improves Room Aesthetics
A roof lantern becomes a central feature in a room. It adds height, style, and an architectural touch that impresses visitors.
Creates a Feeling of Space
Natural light makes the room appear larger. Roof lanterns are especially useful in extensions and flat-roof kitchens.
Energy Efficiency Benefits
Many modern roof lanterns use double or triple glazing that helps keep heat in during winter and reflect heat out during summer. This improves energy saving and reduces electricity bills.
Types of Roof Lanterns for Flat Roofs
There are different styles and designs available. Homeowners and builders can choose based on their roof type, interior style and budget.
Traditional Roof Lanterns
These have more bars and frames, giving them a classic look. They are suitable for heritage properties and period homes.
Contemporary Roof Lanterns
Modern lanterns have fewer frame bars and more glass surface. They offer a minimalist and sleek look that fits well with new builds.
Square Roof Lanterns
Designed for small roof spaces, they provide natural light without overpowering the roof.
Rectangular Roof Lanterns
More common for kitchens and dining spaces as they spread light over a larger area.
Materials Used in Roof Lantern Construction
Roof lanterns come in different frame materials. Each has its own benefits:
Aluminium Roof Lanterns
Aluminium is strong, slim and durable. It allows for thinner frames and larger glass panels. This means more light enters the room. Aluminium does not rust easily and can handle weather changes.
uPVC Roof Lanterns
uPVC is affordable and low maintenance. It offers good insulation but usually has thicker frames compared to aluminium. It is a budget-friendly choice for homeowners.
Timber Roof Lanterns
Timber frames offer a traditional, warm look. They are suited for heritage buildings. However, timber requires more maintenance to protect against moisture and damage.
Glazing Options for Roof Lanterns
Choosing the right glass is important. Glass affects light control, insulation, and energy efficiency.
Double Glazing
Standard choice and suitable for most homes. It keeps heat inside and reduces condensation.
Triple Glazing
Provides better thermal performance and sound insulation. Good for extreme climates.
Low-E Glass
Low-emissivity glass reflects heat. It keeps rooms cool in summer and warm in winter.
Self-Cleaning Glass
This glass has a special coating that reduces dirt build-up and makes cleaning easier.
Tinted or Solar-Control Glass
Tinted glass reduces glare and prevents overheating in sunny rooms.
Key Benefits of Installing Roof Lanterns
Roof lanterns provide many practical and aesthetic advantages.
More Natural Light
The biggest benefit is daylight. Natural light improves mood, reduces eye strain and makes interiors feel fresh.
Better Airflow (If Venting Option Is Chosen)
Some roof lanterns can open for ventilation. This helps remove cooking smells, reduce humidity and improve air quality.
Stylish Architectural Feature
Roof lanterns are visually impressive both inside and outside. They add value to the property.
Energy Savings
With modern glazing, homeowners can reduce energy bills because roof lanterns improve insulation and reduce dependency on artificial lighting.
Increase Property Value
A home with modern features attracts buyers faster. Roof lanterns make kitchens, living rooms and extensions more desirable.
Planning and Installation
Installing a roof lantern should be planned properly to avoid leaks and structural issues.
Structural Considerations
The roof must support the weight of the lantern. Reinforcement may be required depending on the size and roof condition.
Weatherproofing
Correct sealing and flashings are important to prevent water leakage. Professional installation is recommended.
Building Regulations
Some countries require building approvals. It depends on size, location and design. Always check local rules before installation.
Positioning the Roof Lantern
Placement affects how light spreads in the room. Many installers recommend placing it in the center of the roof for best results.
Maintenance and Cleaning
Roof lanterns require low maintenance if good materials are chosen.
Glass Cleaning
Use mild soap or glass cleaner. Self-cleaning glass reduces effort.
Frame Maintenance
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Aluminium: minimal care needed
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uPVC: wipe occasionally to remove dirt
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Timber: needs painting or sealing over time
Check Seals and Flashing
Inspect once a year to ensure no water leakage or air gaps.
How Much Do Roof Lanterns Cost?
Prices vary depending on:
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Size
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Frame material
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Glass type
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Brand and installer
Aluminium lanterns cost more than uPVC, while timber tends to be the most expensive. Extra installation fees apply if structural work is needed.
While not the cheapest feature, the long-term benefits and visual impact justify the investment for many homeowners.
Tips for Choosing the Right Roof Lantern
Here are some important selection tips:
Measure the Roof Space Carefully
Correct sizing ensures the room gets balanced light.
Choose Durable Materials
Aluminium or uPVC frames with double/triple glazing work well for long-term performance.
Consider Heat Control
Solar-control or Low-E glass prevents overheating in summer.
Select a Professional Installer
Proper installation prevents leaks and ensures long-term performance.
Conclusion
Roof lanterns for flat roofs are an excellent way to add more daylight, style, and value to a home. They make rooms brighter, improve ventilation, and create a modern look that enhances both the interior and exterior design. With many materials, glazing options, and styles available, homeowners can easily find a roof lantern that suits their roof type and budget. If you want a stylish home extension or a brighter living area, a roof lantern is a smart and attractive investment for any flat roof.