Many homeowners and commercial property owners are now considering upgrading their rooflights to improve aesthetics, functionality, and energy efficiency. One of the most popular transformations is to replace dome with glass rooflights. Dome rooflights, while effective for daylighting, can sometimes appear dated or allow excessive heat gain and noise. Switching to a flat glass rooflight not only modernizes the appearance of your property but also enhances natural lighting and performance.
Upgrading skylight solutions to flat glass rooflights is becoming increasingly popular. Not only does this replacement improve functionality, but it can also enhance the overall look of your home or office. Many homeowners turn to trusted providers like Skylights Roof Lanterns for high-quality, contemporary flat glass solutions that are both efficient and stylish.
In this article, we explore the process, benefits, and considerations of replacing a dome with a flat glass rooflight. We will also cover installation tips, energy performance, practical design advice, and long-term maintenance to ensure your refurbishment delivers lasting results.
Benefits of Upgrading to a Flat Glass Rooflight
Replacing a dome rooflight with a flat glass option comes with numerous advantages:
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Modern aesthetics: Flat glass rooflights offer a sleek, clean appearance that complements contemporary architecture.
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Improved energy performance: Many flat glass units feature double or triple glazing with low-emissivity coatings that enhance insulation.
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Better light distribution: Flat glass provides a more even spread of daylight into the interior.
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Reduced maintenance: Flat glass is easier to clean and less prone to wear and discoloration than dome materials.
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Noise reduction: High-performance glazing minimizes the sound of rain, wind, and hail compared to domed plastics.
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Durability: Flat glass units, especially laminated or toughened, are resistant to cracking and UV damage.
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Increased property value: A modern, high-performance rooflight adds to resale appeal.
Upgrading from a dome to a flat glass rooflight is not just a cosmetic improvement—it also contributes to long-term comfort, energy efficiency, and property value.
Understanding the Replacement Process
The process to replace dome with glass rooflights involves several key steps:
Step 1: Inspection and Assessment
A professional will evaluate the existing dome rooflight, including the refurbishment kerb, roof structure, and surrounding materials. They will check for leaks, structural weaknesses, and alignment issues to ensure the new flat glass unit will fit perfectly.
Step 2: Measurement and Design
Accurate measurements are critical for a successful installation. Flat glass rooflights require precision in width, length, and height to ensure proper sealing and aesthetics. The installer may suggest a flat glass retrofit kit if the existing kerb is suitable, reducing labor and roof modification.
Step 3: Removal of Dome Rooflight
The old dome is carefully removed to avoid damage to the roof membrane or surrounding structures. Depending on the age and condition, this may involve reinforcing the existing kerb or adjusting roof flashings.
Step 4: Installation of Flat Glass Retrofit
The new flat glass rooflight is installed, often using a flat glass retrofit system. These retrofits are designed to sit over the existing kerb, simplifying installation while improving insulation, weatherproofing, and structural integrity.
Step 5: Sealing and Finishing
Proper sealing is crucial to prevent leaks. Modern rooflights feature integrated flashings or silicone seals to ensure the junction between roof and glass is watertight. Once installed, the surface is finished to match surrounding roofing materials.
Types of Flat Glass Rooflights
Flat glass rooflights come in a variety of designs to suit different applications:
|
Type |
Features |
Best Use Case |
|
Single-glazed flat glass |
Simple design, moderate insulation |
Non-thermal applications, patios |
|
Double-glazed |
Improved insulation, noise reduction |
Residential and office spaces |
|
Triple-glazed |
Maximum thermal performance |
High-performance homes, low-energy buildings |
|
Laminated glass |
Safety and UV protection |
Skylights in high-traffic or public areas |
|
Low-E coated glass |
Reflects heat while allowing light |
Hot climates or south-facing roofs |
Selecting the right type depends on the building’s insulation needs, exposure to sun, and functional requirements. For homeowners seeking inspiration and options for dome replacements, browsing this collection of dome rooflights provides insights into various designs and performance levels.
Refurbishment Kerbs: What You Need to Know
One of the key elements in replacing a dome with a flat glass rooflight is the refurbishment kerb. This is a pre-fabricated or custom-built frame that sits atop the existing roof opening and supports the new flat glass unit.
Benefits of Refurbishment Kerbs
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Reduces labor costs: No need to dismantle the roof completely.
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Structural integrity: Maintains a secure base for heavier glass units.
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Weatherproofing: Ensures proper flashing and sealing to prevent leaks.
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Ease of installation: Often pre-drilled or fitted to standard rooflight dimensions.
When planning a replacement, discuss kerb options with your installer. Some refurbishment kerbs can accommodate multiple flat glass thicknesses and glazing types, allowing flexibility for your energy performance needs.
Energy Efficiency and Thermal Performance
Replacing a dome with a flat glass rooflight can dramatically improve energy efficiency. Modern flat glass units incorporate double or triple glazing with low-E coatings, reducing heat loss in winter and limiting heat gain in summer.
|
Feature |
Dome Rooflight |
Flat Glass Rooflight |
|
Insulation |
Moderate |
High (double/triple glazing) |
|
Solar Gain |
Can be high |
Controlled with coatings |
|
Noise Reduction |
Low |
High with laminated glass |
|
Maintenance |
Higher (plastic discolouration) |
Low (glass cleaning) |
|
Lifespan |
15–25 years |
25–40 years |
Energy-conscious property owners can also integrate passive solar design principles by orienting flat glass rooflights to capture winter sun while minimizing summer overheating. For more detailed strategies, see the role of skylights in passive solar design.
Design and Aesthetic Considerations
Flat glass rooflights offer tremendous flexibility in design:
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Frameless designs: Provide a clean, modern appearance, ideal for minimalist architecture.
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Framed designs: Enhance structural stability and add decorative accents.
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Multiple modules: Large roof areas can use several flat glass panels joined seamlessly.
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Operable rooflights: Optional opening for natural ventilation, often electrically operated.
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Tinted or frosted glass: Enhances privacy while still admitting daylight.
Choosing the right design is essential to harmonize with your building’s interior and exterior aesthetics.
Installation Tips and Best Practices
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Hire professionals: Experienced installers ensure watertight sealing and proper kerb integration.
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Check weight capacity: Ensure your roof can support heavier glass units.
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Consider glazing options: Double or triple glazing improves thermal performance.
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Plan for cleaning: Flat glass is easier to maintain, but accessibility should be considered.
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Weatherproof flashings: Essential to prevent leaks at kerb and roof junctions.
A well-installed flat glass rooflight can last decades with minimal maintenance, outperforming many older dome units.
Cost Considerations
The cost of replacing a dome with a flat glass rooflight varies based on:
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Size of the rooflight
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Glazing type and coatings
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Refurbishment kerb requirements
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Complexity of installation
While flat glass rooflights may carry a higher upfront cost than simple dome replacements, their long-term benefits—improved energy efficiency, aesthetics, and reduced maintenance—often justify the investment.
Common Applications and Case Studies
Residential Homes
Flat glass rooflights are popular in loft conversions, extensions, and conservatories, offering clean sightlines and increased daylight. Retrofit solutions allow homeowners to upgrade without structural modifications.
Commercial Spaces
Office buildings, atriums, and public spaces benefit from flat glass rooflights for improved aesthetics, daylighting, and noise reduction.
Hospitality and Retail
Hotels, restaurants, and retail outlets use flat glass units to create modern, bright environments that enhance customer experience.
Choosing a Trusted Provider
Working with an experienced provider ensures your replacement project delivers quality, durability, and compliance with regulations. Companies like Skylights Roof Lanterns specialize in bespoke flat glass solutions, offering a range of sizes, glazing options, and retrofit kits to suit every project.
Conclusion
Replacing a dome rooflight with a flat glass option is a smart way to modernize your property, improve energy efficiency, and enjoy enhanced daylighting. By carefully considering kerb refurbishment, glazing options, and professional installation, homeowners and property managers can achieve a high-performance, visually appealing rooflight solution.
Whether for residential or commercial spaces, a flat glass retrofit is a durable, elegant, and energy-conscious upgrade that transforms interiors.
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