Bespoke glass rooflights have become one of the most desirable features in modern homes. Whether you are upgrading existing flat roofs, extending your kitchen, or planning a self-build project, roof glazing can dramatically transform the feel of your space. But how much do bespoke glass rooflights cost, and which style is right for your home?
With so many options available — from sleek flat roof windows to striking roof lanterns, understanding the differences will help you make a confident, informed decision. In this guide, we’ll explore the benefits, design options, and key cost considerations associated with bespoke glass rooflights.
One of the biggest reasons homeowners invest in glass rooflights is the impact they have on natural light. Rooms that once felt dark or enclosed can be completely revitalised with overhead glazing. By introducing daylight from above, you eliminate shadows and create a brighter, more welcoming environment.
But the benefits don’t stop there:
Whether installed in kitchens, bathrooms, hallways, loft conversions or extensions, glass rooflights bring a contemporary edge while making everyday living more enjoyable.
For properties with flat roofs, there are two main glazing styles to consider: flat rooflights and roof lanterns. Each delivers impressive results but creates a slightly different visual effect.
Flat glass rooflights sit low along the roofline, creating a streamlined, minimal external appearance. From ground level, they are barely visible, making them ideal for homeowners who prefer a subtle finish.
Because many bespoke GLASS ROOFLIGHTS are manufactured to internal dimensions, they can let up to 25% more natural light into a room than standard alternatives. The result is a brighter, more open interior without altering the property’s overall aesthetic.
Flat glass rooflights are particularly popular in:
They can also be combined to form modular glazing systems. For example, multiple units can be installed in a row to create a dramatic strip of overhead glazing — perfect for long, narrow extensions. This flexibility makes bespoke glass rooflights a versatile solution for both compact and large-scale projects.
Opening options are available too, allowing you to improve airflow and maintain a comfortable indoor temperature.
Roof lanterns are a more architectural option for flat roofs. Unlike flat rooflights, lantern rooflights project upwards from the roof surface, forming a raised glazed structure.
The angled glass panels allow light to enter from multiple directions, making roof lanterns especially effective at drawing daylight deep into the room. They are often chosen as a central design feature, adding height and character to an otherwise standard ceiling.
Key benefits of roof lanterns include:
However, roof lanterns require glazing bars to support the structure. These bars are visible from inside the property, unlike the uninterrupted finish of flat glass rooflights. Modern systems are designed with slimline connectors to reduce visual obstruction and maximise natural light.
If you want to create a statement feature within your extension or open-plan living area, roof lanterns can deliver a striking result.
For more unique projects, specialist solutions such as an Eaves Rooflight or an up-and-over Eaves window can create a truly distinctive look.
An Eaves Rooflight extends down to meet the wall line, allowing light to flood the room from both above and the side. This creates a seamless glass corner effect that blurs the boundary between interior and exterior space.
An up and over Eaves window takes this concept even further by running the glazing from the vertical wall surface directly over the roof structure. The result is uninterrupted sky views and a bold architectural statement.
These bespoke glass rooflights are typically more expensive due to their structural complexity and custom design, but they offer a premium finish that can dramatically elevate your home’s appearance.
The cost of bespoke glass rooflights varies depending on several key factors:
1. Size and Dimensions
Larger units require more structural support and glazing, increasing the overall investment.
2. Glazing Specification
Triple glazing, solar control coatings, and acoustic glass all add to the cost but improve thermal efficiency and comfort.
3. Design Complexity
Flat rooflights are generally more affordable than roof lanterns. Specialist options such as an Eaves Rooflight or an up-and-over Eaves window will sit at the higher end of the pricing scale.
4. Opening Mechanisms
Electric opening systems, rain sensors, and smart home integration will also affect the final price.
5. Installation Requirements
Structural alterations, access challenges, and roof preparation can influence installation costs.
As a rough guide:
While upfront costs may vary, investing in high-quality glass rooflights can improve energy efficiency, increase property value, and enhance overall comfort — making them a worthwhile long-term addition.
Choosing between flat glass rooflights and roof lanterns comes down to design preference, budget, and the effect you want to achieve.
Choose flat glass rooflights if you want:
Choose roof lanterns if you want:
Both options work beautifully on flat roofs and can be tailored to suit contemporary or period properties alike.
Whichever style you choose, high-performance glazing is essential. Triple glazing improves insulation, reduces heat loss, and minimises noise from the outside. Modern glass rooflights are designed to meet strict building regulations while keeping your home comfortable all year round.
Thermally efficient frames and advanced glass coatings also help prevent overheating in summer and heat escape in winter.
Bespoke Gglass rooflights offer a stylish, practical way to enhance flat roofs and brighten your living space. From subtle flat designs to eye-catching roof lanterns and innovative Eaves Rooflight systems, there’s a solution to suit every home and budget.
If you would like tailored advice or a personalised quotation, please don’t hesitate to speak to our expert team. We’ll help you choose the perfect glass rooflight solution to bring more natural light and contemporary elegance into your home.
Read our previous post - « Creating a Glazed Link Between Two Buildings
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Our showroom consists of:
Thames Valley Window Company
Head Office & Showroom
44 Longshot Lane
Bracknell
Berkshire RG12 1RL
United Kingdom
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