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Glass Extensions

Glass Extensions

The contemporary home extension

Admiral Homespace have been at the forefront of the real conservatory market since 1989. The company were the first nationally to liaise with building control in order to have the rooms recognised as a proper extension to the home, allowing open plan conservatory living using the latest technology in glazing and environmental controls.

The company is very well equipped to know how trends have developed and how the conservatory sector has developed according to customer needs and wants.

Many Clients now want:

  • A room flooded with natural light
  • A different environment to all other rooms in the home
  • High insulation
  • Good security
  • More solid feel             
  • Larger areas of brick wall
  • Proper thermostatically controlled heating
  • Open plan rooms (Often leading from the kitchen)
  • Low maintenance
  • Bifold or large sliding doors
  • Coloured window and door frames
  • Maximum views
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Traditional home extensions do not cover these needs as they are often dark with no light coming from above and feel small due to the lack of glazed areas.

Conservatories do not either as they often feel like a temporary extension with a lightweight feel and fairly predictable design options

This has led to a demand for Orangery Style rooms.

These buildings have a much more solid feel employing part solid/part glazed roofing and much more brick to the side walls.

It is common to be asked for a contemporary Orangery design incorporating  Bi Folding doors and coloured aluminium frames

High net worth purchasers in particular are looking for glass and brick structures that look different to the rest of the house and surrounding properties.

In a world where so many things are the same individuality will be sought and braver designs considered for so called ‘Lifestyle Rooms’.

We believe that Glass Box meets these needs perfectly …….

Glass Box is a totally bespoke glazed extension of contemporary design.

It combines the solid build and feel of a traditional brick built extension with huge areas of light and view…..

The glass rooms are totally customisable for each client. They can choose between Aluminium PVC or Timber for the windows and doors. The roof lights can be pitched flat or lantern styled. The side and front elevations can accommodate huge areas of glazing thanks to the solid box construction of the room.

The room is definitely contemporary and the room caters for all the requirements of the conservatory lifestyle requested today.

  • Solid feel
  • More View
  • Lots of light especially from above
  • Large expanses of opening
  • A link to the garden
  • Big enough for a multitude of uses
  • Warm in Winter
  • Cool in Summer
  • Low maintenance
  • High security

Hopefully the following will help to determine if GlassBox is a serious consideration for you:


Looks nice but what does it all cost?

The million dollar question (well hopefully not that much!)

This of course depends upon size and just how fancy you want the spec to be, but a ball park figure would be somewhere around £3000 plus vat per square metre.

5 metres by 4 metres therefore around £60,000 plus VAT.

Then there are floor coverings heating furniture to consider.

Bigger rooms tend to offer the best value per build.

What about planning permission?

If it is required, we will handle that for you

Do these rooms require building regulation approval?

Yes, without exception and we will ensure that you have all the paperwork for end to end certification

Do I need an Architect?

Not at all, we will assist with every aspect of design

How much input can I have into the design of my GlassBox?

The whole concept is for you to have a unique totally bespoke room. If its possible to do then we will try our best to accommodate your personality and wishes into your new room

Will I need to be a contract manager for your trades people?

This happens a lot with normal builders. We are different in as much that you will have your own appointed contracts manager supplied to you by Admiral. He will be your point of contact for all aspects of the build.

What colour options are there?

GlassBox frames and claddings are offered in literally any RAL colour to suit you

Do you use outside contractors to build these extensions?

The building works are carried out by Admiral staff as is the glazing. Internal finishes are carried out by our regular tradespeople. We have appointed electricians plumbers roofers and tilers that have been working with us for many years.

Is the work guaranteed?

GlassBox is covered by a Ten Year Warranty unlike alternative home extensions

How long does the work usually take?

Once approvals are granted and we start on site you should allow around six weeks for the major build and another month or so for internal finishing. This includes for any drying out times required to finish internally. These are rough timescales and we are happy to specify the expectations for your particular room once we have the required specification.

Technical features of Glass Box not found in most traditional extensions:

Warm-Cover flat maintenance free roof with a 20 years warranty and 50 year expected lifespan

Natural Light Panels Flood the room with daylight

Super-Insulated Walls that are 30% thicker than standard

Thermabloc Glass A + rated glazing units for superior insulation

Weightless Gearing on Lift and Slide patio doors allowing huge opening panels

ACCOYA plus other options of cladding and external rendered or brick finishes

Colour-Line Frames windows and doors in any colour desired

Panoramic Glazing Glass and view anywhere you require

Invisible Drainage Concealed guttering and downpipe option

Cantilevered Front Shelter Porch overhang to top and sides or just top

Super low threshold Option with Cantilevered Front 

French Drain Option with Super Low Threshold

Bespoke Natural Light You decide where to let the light come in

 We have specialist designers for GlassBox enquiries trained to sympathetically match the contemporary room to its intended location.

A free to access 3 Dimensional drawing service is available via Google Sketch-Up to enable serious prospective purchasers to see the proposed room on the house prior to asking us to proceed with the build.

Testimonial background photo

We would like to express our delight in the finished garden room. We wish to record our sincere thanks to you, the staff at Alconbury and all those craftsmen you engaged to undertake particular tasks. All were brilliant. 

Mr & Mrs Lee Read more testimonials

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