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CosyRoom

CosyRoom is a revolutionary, affordable way to add a new conservatory, extension or showstopping orangery to your home. Create any style of extension or replace old conservatories five times faster than traditional building methods. Customise your new space with a choice of doors and windows from our whole range.

New CosyRoom walls can withstand 68% more lateral force than traditional brick and block walls, allowing for greater design flexibility. The highly energy efficient structure also means that you can be comfortable in your new room all year. Choose from a huge range of wall finishes, ceiling configurations and roof options.

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  • White uPVC Sash Window with Cottage Bars
    White uPVC Sash Window with Cottage Bars
  • White uPVC Sash Window Exterior View of Front of House
    White uPVC Sash Window Exterior View of Front of House
  • Gold Locking Mechanism on White Wooden Sash Window Close Up
    Gold Locking Mechanism on White Wooden Sash Window
  • White uPVC Sash Window in Tilt Position
    White uPVC Sash Window in Tilt Position
  • White uPVC Sliding Sash Window in Open Position
    White uPVC Sliding Sash Window in Open Position
  • White uPVC Sash Window in Dining Room
    White uPVC Sash Window in Dining Room
  • White Wooden Sash Window in Open Position
    White Wooden Sash Window in Open Position
  • White uPVC Sliding Sash Window with Cottage Bars
    White uPVC Sliding Sash Window with Cottage Bars

CosyRoom is an extension, orangery or conservatory built with a brand new construction method, using an insulated walling system instead of brick. These walls consist of interlocking lightweight, thermally efficient insulated panels. Because of their lightweight design, they can utilise existing conservatory bases, eliminating the costly process of replacing an old base. Building regulation compliant, you can customise the roof type, windows, doors and wall finishes to create the extension of your dreams.

Reasons to Choose CosyRoom

  1. Faster & Easier to Install

    CosyRoom modular extensions can be installed up to five times faster than a traditional conservatory or extension. The interlocking walls are manufactured to size off-site, and can be installed in any weather, meaning fewer installation days and less disruption for your home.

  2. Energy Efficient

    CosyRoom walls are up to five times more energy efficient than traditional walls in UK homes. This means your prefab extension comfortable throughout the year, helping to reduce overall heating bills in the winter and keep cooler in summer.

  3. Space

    CosyRoom walls are over 25% slimmer than brick and block walls and rooms. This gives you up to 15% more usable floor space than that of a traditional brick build. More space means you can do more with less and add more value to your home.

  4. Sustainable & Eco-Friendly

    The CosyRoom wall system is 60% more carbon efficient than traditional brick walls. Because the walls are manufactured off-site, there is zero waste in production methods on-site, meaning less mess and debris too. CosyRoom is a much cleaner and more sustainable way to build.

  5. Fully Approved & Certified

    CosyRoom is independently accredited by the BBA for quality, strength, stability, moisture resistance and fire resistance. It also exceeds Building Regulation thermal insulation specifications, achieving a U-Value of 0.17W/m²K.

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Reasons to choose cosyroom

CosyRoom Colour Options

Choose the perfect colour for the doors and windows on your new modular extension. Create the look you want with our range of uPVC finishes, including dual colour options, and a huge choice of durable powder-coated aluminium colours.

CosyRoom Window & Door Options

Choose the perfect windows and doors for your new modular extension. We also offer a wide range of roof options including glass and tile as well as orangery roof lanterns.

CosyRoom window options

Window Options

Our whole window range is available with CosyRoom, so you can choose the perfect windows to compliment your new space. Add modern tilt & turn windows for more ventilation flexibility, or flush casement windows for a sharp, stylish look.

CosyRoom door options

Door Options

Connect your prefab extension to your garden in style with a range of door options to choose from. Create an airy indoor-outdoor feel with aluminium bifold doors or add timeless style with some classic French doors.

CosyRoom roof options

Roof Options

Our CosyRoom is available with our full range of roof options. Choose a between glass, polycarbonate, or solid roofs like lead effect panels or replica tiles. Opt for an orangery with a roof lantern, or customise your replica tiles to match your home.

5 Steps to Your CosyRoom

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    Step 1

    Home or Virtual Visit

    Your local design expert talks you through the options and provides a free quotation.

  • Anglian installer stock image
    Step 2

    Technical Survey

    Our technical surveyor visits your home to measure-up and check your order.

  • planning permission checks
    Step 3

    Planning Permission Checks

    Our team provide a detailed drawing of your conservatory and take care of any planning permission or building regulations.

  • Uk manufacture
    Step 4

    UK Manufacture

    Your conservatory is made to measure right here in the UK.

  • Easy installation
    Step 5

    Easy Installation

    Our team arrange a convenient time to fit your new conservatory.

Do I Need Planning Permission for CosyRoom?

The majority of CosyRoom installations won’t require planning permission. Because they are only one storey, and often built on existing bases, they are considered a permitted development. However, you will need planning permission in a few instances. For example, if your home is listed then you will need planning permission. For a full breakdown, head over to our helpful planning permission guide.

Do I need planning permission for a cosyroom

Hear it From CosyRoom Customers

 

Choose Anglian for a National Company Local to you

Guarantees

10-year Guarantee

A 10-year parts and labour guarantee is included in your Anglian double glazing price.

Made in Britain

Made in Britain

Our products are made from start to finish in a British factory by skilled craftspeople.

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Price Match

If you find cheaper like for like uPVC windows elsewhere, we'll match the price.

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Instant Expert Advice

LiveChat 9am to 6pm Mon-Sun with our British based experts to discuss how we can help.

Decide if a CosyRoom Modular Extension is Right for Your Home

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Will a conservatory add value to your home?

It's the question on everyone's mind - conservatories add extra space to your home, but can they also add value? We're here with expert advice.

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Choosing your Conservatory Roof Style

Whether you're replacing your existing conservatory roof or starting from scratch, we've got you covered with our range of thermally-efficient conservatory roofing options.

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What’s the difference between a Conservatory, Orangery or Extension?

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Dual colour Dark Woodgrain and White UPVC Victorian style conservatory with tilt and turn windows from Anglian Home Improvements

Do Conservatories need Foundations

When planning for a conservatory, you want to know the all the facts. This guide not only tells when you needs conservatory foundations, but also the different type of foundations you might need.

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Common Questions About CosyRoom Modular Extensions

What is a modular extension?

A modular extension is any type of extension, orangery or conservatory built using non-traditional building methods. These prefabricated wall systems are manufactured off site and assembled on site in a much less time consuming way with less mess and hassle for you.

Can you get a mortgage on a house with a modular extension?

The short answer is yes, you can get a mortgage on a house with a modular extension. As with any extension however, it would need to have been created following all planning rules and building regulations. Our CosyRoom prefab extensions are fully certified and follow all building regulations. IF you do require any planning permission, then we take care of the whole process for you.

Are modular extensions any good?

Modular extensions are a great way to add an addition to your home. They are often much faster to build than traditional extensions, they are more environmentally friendly, better insulated and overall more cost-effective than traditional extensions.

How long do prefab extensions last?

Our CosyRoom prefab extensions are certified to last a minimum of 60 years. This makes them a great long term investment for your home. We offer a 10-year guarantee on parts and labour for our CosyRoom extensions, as well as a host of other guarantees on your windows and doors.

Will you need planning permission for a prefab extension?

In most cases, you probably won’t need to obtain planning permission for a prefab extension. However, that depends on a number of factors. These include its size, its position and whether your home is protected in any way. In the first instance, have a look at your local authority website to see their rules on extensions, orangeries and conservatories. When you choose an Anglian CosyRoom, we take care of any planning permission processes for you, so you don’t have to worry.

Made in Britain
Made in Britain
Guarantees
10-year guarantee
Group 3837
UK's Number 1
Home Improvement Provider
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Our Accreditations and Licenses

  • British Board of Agrement accreditation for uPVC windows from Anglian Home Improvements
    The British Board of Agrement provides certification on the quality of our products.
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    Anglian’s PVC-U Casement and Tilt & Turn windows have enhanced security performance.
  • BFRC logo
    The British Fenestration Ratings Council is the UK’s national system for rating energy efficient windows.
  • FENSA logo
    The Fenestration Self-Assessment Scheme ensures window installers comply with buildings regulations in England & Wales.
  • FSC standalone logo TIF green
    Look for our FSC® certified wooden window and door products on our website.
  • Glass and Glazing Federation logo
    Anglian is a leading member of the Glass and Glazing Federation (GGF).
  • Recovinyl Plus logo
    PVC Industry initiative to improve manufacturing, minimise emissions and develop recycling practices
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    TrustMark is a government endorsed not-for-profit organisation that operates through more than 30 scheme operators.