Double Glazing Network

Double Glazing Network was established by TruFrame, the largest double glazing manufacturer of Liniar uPVC profile, the UK's most technically advanced window system. The Double Glazing Network comprises specially selected companies who have been fully vetted, monitored and approved, ensuring the very highest standards.


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Customer Feedback

  • " Great Job WFS! Fantastic double glazed doors out to my garden. Very good quality Windows/Doors and my kitchen diner is noticeably warmer. Thanks also... " Customer In Peterborough - 26 Apr 2016
  • " Very prompt, tidy and professional. Good communications. " Customer In Yaxley - 26 Apr 2016
  • " I would just like to thank you for getting our windows in so quickly and at such a good price. Your guys were... " Customer In Milton Keynes - 15 Apr 2016

Energy Efficient Double Glazing

Our superb range of double glazed uPVC Liniar windows and doors are extremely energy efficient; achieving the very highest energy ratings available whilst outperforming other window profile systems in the market.

Better for the Environment
The dangers of lead are well known to the environment. That is why all of our Liniar windows and doors are manufactured 100% Lead free and are therefore 100% recyclable, making them better for the environment as well as meeting EU and UK legislation ahead of time.

Energy Saving Trust Recommended
Since TruFrame are an Energy Saving Trust certified manufacturer, all of Double Glazing Network’s uPVC window and door products come with the Energy Saving Trust Recommended logo – the sign that informs consumers of energy efficient products similar to white goods such as fridges and freezers.

Highest Windows Energy Ratings
The Double Glazing Network’s superb supply chain includes a British Fenestration Rating Council (BFRC) approved fabricator and licence holder (TruFrame). TruFrame is also Build Check certified as an authorised Window energy Rating Scheme member. Subsequently, the revolutionary Liniar window profile system is capable of achieving the very highest Window Energy Ratings (WER) A+ 14.

Thermal Efficiency
The Liniar window profile system has multiple size-optimised chambers which are specifically designed to lock in heat and keep the cold air out; thereby providing incredible thermal efficiency as well as rigidity and torsional stiffness. Our patented double-action bubble gaskets with memory retentive properties also prevent heat loss and provide an excellent weather seal.

Superior Triple Glazed U-Values
The Liniar range of window and door products are also available in Triple glazing which is becoming increasingly popular with homeowners. Not only has the Liniar window profile system been specifically designed to accommodate a triple glazed glass sealed unit; it also achieves superior U-Values as low as 1.0 W/(m²-K)! Moreover, our ‘Trojan Mega Egress’ hinge ensures that our windows can easily take the weight of an additional 50% of glass providing a true ‘fit and forget’ level of reliability and peace of mind.

High Quality uPVC Windows

Every supplier that is part of The Double Glazing Network will offer a great selection of uPVC Windows. Their accreditation with us combined with the use of Liniar’s stellar double glazing profile ensures that every property will benefit from the great features a Liniar uPVC double glazed window will provide.

Casement Windows
Take a look at the Casement window, a hugely popular design amongst home owners alike when choosing new double glazing. The Casement window includes a great number of features that will compliment any property needing a refreshing new look. Read more...

Tilt & Turn Windows
Another great uPVC window that The Double Glazing Network members offer to home owners is the Tilt & Turn window. Perfect for high level apartments, this uPVC window features integrated hardware including a continuous rebate gasket ensuring the prevention of condensation, whilst also further enhancing sound-proofing. Read more...

French Casement Windows.
For the luxury of freedom, the French Casement window is another fantastic uPVC window offered by dealers of The Double Glazing Network. The French Casement window presents home owners with multiple benefits including a flying mullion, allowing the home owner to open up this uPVC window with unlimited restrictions. Read more...

Sliding Sash Windows
Maintain the traditional look of your property with the elegant and charming Sliding Sash window. Using Liniar’s profiling system the Sliding Sash window combines traditional aesthetics with modern technology to bring you a double glazing product that is highly efficient, easy to use and wonderfully attractive. Read more...

More High Quality Double Glazing
Not only do The Double Glazing Network dealers offer these incredible Liniar products, they also specialise in other double glazed window solutions, for our full list of products you can go straight to our product pages here.

Superior Liniar Double Glazing

Established by TruFrame, the UK’s biggest double glazing manufacturer of the incredibly innovative Liniar uPVC profiling system, The Double Glazing Network is comprised of only the very best double glazing companies across the UK.

These companies are always monitored before being awarded a place within The Double Glazing Network, and are fully tested, vetted and then approved. This ensures that every customer looking for uPVC windows, uPVC doors or a beautiful new conservatory will receive the best possible service and products there is to give.

The Liniar Window Profile
Each and every one of our specially selected double glazing dealers all specialise in the supply and installation of Liniar’s technologically superior profile. Comprised of six chambers, this unique and innovative double glazing profile offers home owners a whole new level of benefits and features.

Why Choose Liniar Windows?
Choosing Liniar Windows will set your property above the rest. Not only do they achieve the highest possible Window Energy Ratings, they are manufactured completely 100% lead-free making them 100% recyclable.

Liniar windows are therefore better for the environment than a standard double glazing profile, adhering to UK and EU legislation.

Not to mention Liniar windows are a double glazing product that is energy efficient and thermally robust, offering home owners the very best in functionality and the opportunity to save on their energy bills, whilst keeping the property at the desired temperature.

Liniar Window Products
All of our dealers at The Double Glazing Network supply and fit a comprehensive range of Liniar Windows, and are guaranteed to provide a product that will suit any property.

Our dealers supply windows ranging from the highly popular Casement, affordable and functional, to the hugely practical Tilt & Turn, and everything in-between. For a full list of Liniar Window products you can view our detailed and technical specifications here.

High Security Double Glazing

The Double Glazing Network doesn’t take security lightly. That means when we approve a top quality double glazing supplier we ensure that every step is taken to give home owners the very best in double glazing security.

This means that all of our dealers are approved installers of the UK’s most trusted manufacturer of secure locking systems: Yale Security.

Yale Security
As every Double Glazing Network member is fully approved to install Yale locking systems, we can assure all of our consumers that these locks will provide you with a secure and durable system that is guaranteed to prevent forced entry into your home.

Secured By Design
If security is always playing on your mind you can rest assured with a Double Glazing Network dealer. Their optional Yale 'Shootbolt' locks are fully accredited by the Secured By Design police preferred specification. This is the highest level of protection against forced entry.

uPVC Window Security
Security for Liniar uPVC windows has never been easier with the option of a Yale Shootbolt locking system, and we are highly confident that these locks will stand the test time and resist forced entry. If the unlikely event of a Shootbolt lock failing and your double glazing is compromised then home owners are covered by the Yale Security Guarantee, meaning you will receive £1,000 towards your home content insurance.

Door Security
When it comes to securing your property, having a highly secure uPVC or composite door really matters, and is just as important than the security on your uPVC windows. At The Double Glazing Network, our members can provide you with Britain’s bestselling multi-point door lock; The Lockmaster.

The Lockmaster provides both uPVC and composite doors with a lock that is highly secure, and accredited by Secured By Design, BSI and the BBA, giving home owners that extra peace of mind.

10 Year Mechanical Guarantee
Every Yale security lock that is fitted onto a Liniar uPVC window or door comes fully protected and guaranteed against mechanical for a full 10 years after the date of installation.

Extend Your Home With A New Conservatory

With a Double Glazing Network Member, you can be sure that choosing a brand new conservatory for your home will turn from an ordeal, and into a fun task that will change your home forever.

Each of our dealers will confidently supply you with a conservatory that is tailor made to meet your desired specification, using the very best materials on the market including the Liniar profiling system as well as secure locking systems for the uPVC windows and doors.

A Conservatory Opens Up Your Home
By having a conservatory installed you will not only add value to your home but you will also and more importantly extend the living space of your property and you will be able to enjoy your time at home so much more.

By choosing a conservatory from one of our Double Glazing Network members you can be sure that you’re getting the very best service and products.

Victorian Conservatory
The Victorian conservatory features a traditional design that includes a three or five faceted bay that projects out into the garden space with a curved outline, giving you excellent views of the outdoors. This design also generally features detailed finials that line the roof and add a luxurious finishing touch. Read more...

Edwardian Conservatory
The Edwardian Conservatory is another classic design, much like the Victorian, but features a square design instead of being rounded. Their traditional design allows you to make the most out of the available space whilst flooding your property with even more natural sunlight than before. Read more...

More Conservatory Styles
There are many more conservatory styles that are always on offer from The Double Glazing Network dealers, including the high angled roof Gable-Ended, the simple and cost-effective Lean-To, the more private Orangery and even bespoke conservatories designed and tailor made to suit your desires. You can find more information on which conservatory is for you here.

Latest News

uPVC Bi-Folding Doors
12 April 2016

Transform Rooms With The Bi-Folding Door Transform your property and instantly open up rooms to more light and space with our Liniar uPVC bi-folding doors. With super sleek lines and concealed hardware, our uPVC bi-folding doors are the first product of their kind to be regarded as a genuine alternative to aluminium. Benefits & Features More Space When open, a slim outer frame allows you to enjoy wide and unobstructed views.    Brighter Views The slimline frame offers less uPVC and more glass, resulting in lots of natural light ... read more

The Double Glazing Network
11 April 2016

The Double Glazing Network Difference When you choose a Double Glazing Network approved installer, you can have complete confidence in your new product and installation. All companies in the Double Glazing Network are industry leading suppliers of uPVC windows, doors and conservatories. You can have complete peace of mind knowing of their excellent reputation for quality and services as well as fantastic value for money. Trusted Double Glazing Companies Every double glazing company is independently checked and vetted by us. All members ... read more

New Refine Flush Sash Window
7 April 2016

The Refine Window Collection Introducing the UK's first Secured by Design, fully mechanically joined flush sash window. Inspired by traditional timber joinery, the Refine flush sash window collection is based on period window styles whilst benefiting from 21st Century features and benefits. How Does It Work? When in operation, both frame and sash fit flush when closed. This dedicated slimline sash successfully re-creates the look of traditional timber jointery for a highly authentic appearance. Beautiful Colours & Finishes Choos... read more

Liniar Tilt and Turn Windows
6 March 2016

Tilt and Turn Window Prices Find your nearest tilt and turn window installer with the Double Glazing Network. Simply enter your postcode for a list of accredited window companies in your local area and get instant tilt and turn window prices. uPVC Tilt And Turn Windows If you are looking for a uPVC window which offers secure and safe ventilation then the Liniar uPVC tilt and turn window offers the perfect solution. Simple To Use Double glazed tilt and turn windows are very easy to operate thanks to a dual-action movement which gives acc... read more

Double Glazing Dealer in Derby
24 February 2016

Double Glazing in Derby Looking for a double glazing supplier in Derby or surrounding areas? Choosing the right double glazing dealer for you is imperative. What makes them stand out? Why should you choose them? The Double Glazing Network is here to help you find a trusted supplier to perfectly suit your double glazing needs. Trent Valley Windows, a proud member of our network, supply and install uPVC double glazing in Hilton, Oakwood, Mickleover, Littleover, Chellaston, Melbourne, Spondon, Ilkeston and across Derby. Whether energy-efficiency, s... read more

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