MFP Glass Box Extensions

Create beautiful, clear and frameless extensions to your home with our custom-built MFP glass box extensions. With limitless design possibilities, a glazed extension is an impactful, stunning addition to a house of any style.

Whether it is a matching feature for a modern home or a contrasting extension to a traditional property, a simple glass box will make even the smallest extension feel larger. Extend your kitchen and connect it to the garden, or fill a side return with a fabulous glass structure. Large scale or small scale, the possibilities are endless.

Aliluxe designs, supplies and installs MFP glass box extensions for homes across London, Hertfordshire, Kent and Surrey.

MFP glass box extensions at a glance

• Design: custom built and frameless in appearance.

• Uses: kitchen extensions, side returns, garden links and indoor-outdoor living spaces.

• Glazing: built from our structural glass roof and wall systems, double or triple glazed, with solar reflective coatings available.

• Doors: combine with our slim sliding or pivot doors.

• Scale: from small side returns to large extensions.

• Guarantee: our 10-year insurance-backed guarantee, plus the manufacturer's guarantee.

Colours and finishes

Each glass box is designed for your home, with the glass specification, coatings and frame finishes chosen to suit a modern or period property.

What affects the cost of MFP glass box extensions?

Every installation is made to measure, so we quote after a free design visit rather than publishing prices. The main things that affect the cost are:

• The size and shape of the extension.

• Glass build-up and solar reflective coatings.

• Any support beams.

• Opening doors, such as sliding or pivot doors.

• Foundations and builders' work.

Your quote is fixed and itemised, so you can see exactly what you are paying for.

How we install MFP glass box extensions

1. Free design visit: we discuss the space, the look you want and how the glass will be supported.

2. Design and engineering: we work with you, your architect and structural engineer on sizes, glass build-up and fixings.

3. Detailed quote: a fixed, itemised price for the glazing, framing and installation.

4. Custom manufacture: every pane and frame is made to measure.

5. Installation: by our own experienced installation team, coordinated with your builders.

6. Sign-off: Building Regulations approval where required, and our 10-year insurance-backed guarantee.

Planning a glass extension?

Many single-storey rear extensions can be built under permitted development, subject to limits on size, height and materials, and side return infills need careful checking. Permitted development doesn't apply to flats, is restricted in conservation areas, and listed buildings need consent. Building Regulations approval is also needed. Our local area guides, such as Surrey and South London, explain the local planning rules.

MFP glass box extensions: frequently asked questions

What is a glass box extension?

A clear, frameless-looking extension built mostly from structural glass, for kitchens, side returns and garden rooms.

Does a glass extension suit a period home?

Yes. A simple glass box can be a striking contrast to a traditional property, as well as a matching feature on a modern home.

Will a glass box be too hot in summer?

Solar reflective coatings are available, and we design ventilation and doors with you.

Can it include doors?

Yes. Combine it with our slim sliding or pivot doors for easy garden access.

Do I need planning permission?

It depends on the size, position and your property. We check this with you, your architect and the council at the design stage.

Can you fill a side return?

Yes. A glass box is a great way to fill a side return.

Areas we cover

We install MFP glass box extensions across London, Hertfordshire, Kent and Surrey, as well as Berkshire, Buckinghamshire and East Sussex, for homeowners, architects and developers.

Also see: MFP glass roofs and walls, MFP wintergardens and the full Luxury Aluminium range. Browse all structural glass & glass box extensions.

Book a free design visit: call 020 4581 8351, email sales@aliluxe.co.uk or request a quote online.