Glass Roof Kitchen Extensions are an increasingly popular way to flood your living space with natural light while adding a modern architectural statement to your home. As KT5 Construction, a trusted and experienced extension builder in Surrey and London, we’ve guided countless homeowners through the process of planning and building stunning glass roof kitchen extensions that are both practical and visually striking. 

Why Choose a Glass Roof Kitchen Extensions ?

Enhance Light and Space

Glass roofs dramatically increase the amount of natural daylight entering your kitchen, making the space feel larger, warmer and more welcoming.

• • Perfect for dark or north-facing homes

  • Visually connects interior spaces with the garden

  • Enhances property value with modern aesthetic appeal

Design Versatility

Whether you prefer a sleek pitched glass roof or a flat roof with fixed skylights, the options are vast.

• • Pitched glass roofs add height and grandeur.

  • Roof lanterns offer classic elegance with structural support

  • Frameless glazing offers a minimalist look.

Planning and Building Regulations: What You Need to Know

Planning Permission Considerations

Most glass roof extensions fall under permitted development, but:

• • Planning is needed if your property is listed or in a conservation area

  • There are limits on glazing to prevent overheating and overlooking.

  • Use frosted or high-level glazing to reduce neighbour concerns

The 25% Glazing Rule

Building Regulations typically restrict glazing in new extensions to 25% of the floor area. However, this can be increased by improving insulation in walls, and floors and using high-performance glass.

Energy Efficiency and Overheating: The Hidden Challenges

Managing Heat Gain and Loss

Glass roofs, while beautiful, are notorious for temperature swings.

Combatting Overheating

• • Use a thermochromic or photochromic glass that adapts to heat and light.

  • Install internal or roof-integrated blinds

  • Consider roof overhangs or shading solutions

Reducing Heat Loss

• • Triple-glazed glass with low U-values

  • Thermal breaks in the frame design

  • Insulated side walls to compensate for roof glazing

Design Tips for a Stunning Glass Roof Kitchen

Think About Orientation

• • East-facing kitchens enjoy morning light—perfect for breakfast nooks

  • West-facing kitchens offer a golden hour ambience for evening meals.

Zoned Roof Glazing

Use glazing above specific kitchen zones (like dining or island prep areas) to create atmosphere and improve functionality.

Mixed Roof Styles

Blend pitched and flat glazing for dynamic rooflines that add both form and function.

Cost Considerations for Glass Roof Kitchen Extensions

What Affects the Cost?

Several factors influence the budget:

• • Structural glazing vs. standard skylights

  • Steel reinforcement requirements

  • Bespoke vs. standard roof designs

Average glass roof kitchen extensions in London range from £2,000–£3,500+ per square metre depending on design complexity and materials.

KT5 Construction: Your Expert Partner in Glass Roof Kitchen Extensions

As a leading kitchen extension builder in London and Surrey, KT5 Construction offers:

• • In-house architectural and design services

  • Full project management from concept to completion

  • Compliance with all planning and building regulations

  • Custom solutions for listed buildings and difficult plots

We don’t just build extensions—we deliver lifestyle transformations.

FAQs – Glass Roof Kitchen Extensions

Q: Do I need planning permission for a glass roof kitchen extension?

A: Not always. Many single-storey extensions fall under permitted development, but glazing limits and conservation rules may apply.

Q: Will a glass roof make my kitchen too hot or too cold?

A: Not with the right design! High-performance glass, proper orientation, and ventilation features can maintain comfortable temperatures year-round.

Q: Can I have a glass roof in a listed building?

A: Yes, but you may need a glazed “link” structure to separate old from new—KT5 can help navigate planning permissions.

Q: What’s the best style of glass roof for a kitchen?

A: That depends on your home and design goals. Pitched roofs add height, roof lanterns bring classic charm, and skylights offer minimalism.

Call to Action

Ready to transform your kitchen with a glass roof extension?

Contact KT5 Construction today for a no-obligation consultation and let’s bring light and luxury into your home.