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Extreme UPVC Windows

Conservatory Outlet’s Extreme UPVC windows provide exceptional insulation, noise reduction, security and are available in a wide selection of designs and finishes.
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Explore our Extreme UPVC windows

Experience superior performance with our exclusive Extreme double glazed UPVC windows. Featuring outstanding energy efficiency and advanced security options, these windows are designed to meet the highest standards. With such a wide selection of UPVC windows available at Conservatory Outlet, you’re sure to find the perfect design for your home’s unique style and needs.

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UPVC Casement Windows...

Our Extreme traditional UPVC Casement Windows are hinged on one side and open outwardly, either individually or in multiples. Designed to last a lifetime, these windows are virtually maintenance-free and boast an impressive A+ energy efficiency rating.

They also offer exceptional security with key locking handles, vault bolt and multi-cam locking systems, and interlocking hinge bolts for enhanced protection.

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White Extreme UPVC Windows

UPVC Tilt & Turn Windows...

Our UPVC tilt & turn windows are some of our most practical windows. With a single turn of the handle, the window tilts inward from the top, allowing fresh air to enter above head height—minimising draughts and ensuring child safety.

Close the window and turn the handle again to open it inwards from the side, making cleaning the exterior a breeze.

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UPVC Tilt & Turn Windows

UPVC Envisage Flush Windows...

Envisage flush windows are ideal for replacing traditional timber flush casement windows, offering a classic look with modern benefits. The sash sits level with the frame, just like traditional timber windows.

What sets Envisage apart is the advanced performance of 21st-century UPVC, providing top-notch security and insulation, so you can enjoy the timeless style without sacrificing functionality or efficiency.

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Grey Envisage Flush Windows

UPVC Bay & Bow Windows...

An Extreme UPVC Bay & Bow window features three or more sides that extend from the exterior wall, enhancing light and space indoors while creating a stunning façade outside.

Available in triangular, rectangular, or polygonal shapes, they are typically installed at the front of a property, often as lounge windows, providing panoramic views and adding to your home’s kerb appeal and unique character.

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UPVC Tilt & Turn Windows

UPVC Cottage Windows...

The UK has many different homes, and our UPVC cottage windows are designed to replicate the style of windows found in cottages from the past. Cottage windows feature a timeless, elegant design that brings authentic charm to traditional homes. They are also sometimes chosen to add character to new builds.

Just because they have a traditional look doesn’t mean they don’t have modern benefits. They combine classic style with energy efficiency, security, and durability.

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Grey UPVC Cottage Windows

UPVC French Windows...

UPVC French windows feature two parallel-opening vents, creating a spacious opening and a classic, stylish look. They flood interiors with natural light, enhance ventilation, and provide easy access, making them a popular choice among UK homeowners.

Ideal for creating a seamless connection between indoor and outdoor spaces, they also offer practical benefits like improved safety and easy pass-through for kitchens.

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Envisage Flush French Windows

UPVC Fully Reversible Windows

Easy to clean and simple to operate, our Extreme fully reversible window is a practical and stylish option for your home.

The special pivot mechanism enables your window to rotate a full 180 degrees, allowing you to clean your windows from the
inside. It also incorporates an advanced locking mechanism and automatic safety catches as standard.

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Extreme Fully Reversible Windows

UPVC Sash Windows...

Traditional Georgian, Victorian, and Edwardian sliding sash windows are often prone to cold draughts and require frequent maintenance. The modern UPVC sliding sash windows from Conservatory Outlet deliver superior warmth and energy efficiency, all while being virtually maintenance-free.

Tilt restrictors guarantee smooth and secure operation, allowing the window to remain open at any angle. Ergonomically designed handles facilitate safe and effortless sliding of the sashes.

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UPVC Sash Windows

Why choose our double glazed Extreme UPVC windows?

Our double glazed UPVC windows are designed to deliver exceptional performance and style. From the comprehensive guarantee we offer to their impressive features, here’s a snapshot into why they’re the perfect choice for your home…

20 Year Guarantee

Our most energy efficient collection

Showrooms throughout the UK

Manufactured in Britain

Premium locks & hardware

Broad range of colours

There’s nothing else like Extreme on the market...

Our Extreme range is a collection of advanced window systems, each one supplied with a quality guarantee with exceptional features built in. The collection includes a variety of window designs so there is something for every home and personal taste.

Extreme means taking UPVC windows to the next level, especially when it comes to security, thermal efficiency and style. Our Extreme range offers top-tier thermal efficiency, featuring A+ energy-rated glass as standard to keep your home warm and cosy.

White UPVC Windows

Extreme UPVC windows security

Your home’s safety and security are our top priorities. That’s why every one of our UPVC window designs includes built-in enhanced security features for your peace of mind and family’s safety.

Cranked Window Handles

Cranked Handles

Our cranked handles are ergonomically shaped for comfort and allow for smooth, effortless opening and closing.

Extreme Window Hinge Bolt Locking Systems

Hinge Bolts

Hinge bolts are essential for enhancing the security of your windows, preventing forced entry by securing the hinge side of the sash.

Herculean Window Hinges

Herculean Hinges

Their advanced design helps to prevent wear and tear, ensuring long-lasting functionality and reliability.

9 Point Window Locking System

Locking Mechanisms

Our locking mechanisms are designed to provide superior security, with multi-point locking systems that offer enhanced protection against intrusions.

Premium colours & accessories bespoke to you

Our UPVC range boasts a wide selection of popular window styles and a nearly endless array of colours, accessories and finishing touches. Even if your neighbour has Conservatory Outlet windows installed in their home, it’s unlikely you would have the same as there are so many ways to customise your windows that are personal to your taste.

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So many colours to choose from...

Just a few decades ago homeowners were reliant on only a few finishes for their UPVC windows, but now there are so many options to choose from. With the Extreme collection, you’ll find an extensive array of shades, textures, and wood effects to choose from.

Whether you’re drawn to the latest trends or prefer a classic look, selecting the perfect colour has never been easier. While traditional white UPVC remains a classic choice, you’re free to explore.

Elevate your windows with our premium handles...

Choosing the right handles for your UPVC windows is essential to get right for style and functionality. Our selection of high-security hardware enhances your window’s aesthetic while providing top-notch security.

Don’t worry about making a decision by yourself – the knowledgeable designers at your Conservatory Outlet Premium Retailer will be available to help you select the ideal handles to complement your overall design.

A diverse range of premium handle colours...

From sleek modern shades to classic hues, you’ll find options that perfectly complement your UPVC window design. Whether you prefer a subtle match or a bold contrast to your window frames, it will be easy to find the right handle colour with some assistance.

Your Premium Retailers’ expert team can guide you in finding the ideal colour to complete the look of the windows.

Optimal glazing for style and performance...

Choose the ideal glazing to enhance the beauty and performance of your Extreme UPVC windows. Our collection offers a variety of glazing options that combine style with energy efficiency, ensuring your windows not only look great but also provide excellent thermal insulation and soundproofing.

With advanced glazing solutions, your windows will be both functional and elegant. We also have a selection of privacy glazing available for rooms that require it, such as bathrooms.

We have Lead, Astragal and Georgian Bar finishes...

Add a touch of classic charm with our range of finishing touches. Our leaded, astragal, and Georgian bar finishes offer timeless elegance and can be customised to suit your style.

Whether you’re looking for traditional detailing or a refined look, these finishes provide the perfect accent to your windows, enhancing their character and appeal.

Extreme UPVC French Windows

Conservatory Outlet retail customer reviews

Read a small selection of the sentiments from our Premium Retail customers throughout the UK.

Start your journey with a free window quote

Simply fill in your details for your free, no obligation quotation, and click “Get Quote” and your nearest retailer will contact you as soon as possible to start your journey.

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Want to speak with an advisor? Give us a call on 0131 677 0866

Our friendly team will be pleased to help with any questions you may have.

Find your local Retail Showroom

Discover your local showroom, featuring a stunning collection of super-energy efficient windows & doors, and a beautiful array of conservatories, orangeries and home extensions.  Get a feel for what you like and be inspired with expert advice from our Premium Retailers who can really help you on your journey.

Your retail showroom is never far away!

Or if you prefer, simply select your location and choose a local showroom near you. We have the perfect settings to get inspired! You’ll be able to see a huge choice of windows, doors and living spaces in your local retail showroom to really get a feel for what you like. Specialists local to you will gladly show you around and work with you to design your perfect home improvements.

Amber - Norwich Showroom

Norwich Showroom

Hazlemere Windows - Welwyn Garden City Showroom

Welwyn Garden City Showroom

5 Star Windows - Kidderminster Showroom

Kidderminster Showroom

James Oliver - Lincoln Showroom

Lincoln Showroom

Premium Retailer Showroom

Nottingham Showroom

5 Star - Worcester Showroom

Worcester Showroom

Pennine Gateshead Showroom

Gateshead Showroom

Planet - Kendal Showroom

Kendal Showroom

Clearview Nantwich Showroom, Cheshire

Nantwich Showroom

Clearview Preston Showroom

Preston Showroom

Clearview Warrington Showroom, Cheshire

Warrington Showroom

Aberdeen Showroom

Aberdeen Showroom

Ayr Showroom

Ayr Showroom

Dundee Showroom

Dundee Showroom

Galashiels Showroom

Galashiels Showroom

ERG Scotland - Invergordon Showroom

Invergordon Showroom

Lochmaben Showroom

Lochmaben Showroom

Eden Windows - Gillingham Showroom

Gillingham Showroom

Heathfield Showroom

Heathfield Showroom

Hazlemere Windows - High Wycombe Showroom

High Wycombe Showroom

Ickenham Showroom

Ickenham Showroom

Newport Retail Showroom

Newport Showroom (Isle of Wight)

Orpington Retail Showroom

Orpington Showroom

TWC Oxford Showroom

Oxford Showroom

Tunbridge Wells Showroom

Tunbridge Wells Showroom

Winchester Retail Showroom

Winchester Showroom

Trademark - Woodley Showroom

Woodley Showroom

Frome Showroom

Frome Showroom

TWC Swindon Showroom

Swindon Showroom

Tewkesbury Showroom

Tewkesbury Showroom

Doncaster Retail Showroom

Doncaster Showroom

Visual - Mirfield Showroom

Mirfield Showroom

Wakefield Retail Showroom

Wakefield Showroom

Orion Windows - York Showroom

York Showroom

Window & Door Showroom

Caerphilly Showroom

Mid Wales - Newtown Showroom

Newtown Showroom

Oswestry Showroom

Oswestry Showroom

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