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From full conservatory builds to refurbs, Spectrum has the perfect solution for you and your home.

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Flush Windows

Becoming more and more the go to choice in window style, The UPVC flush window has the look of timber but with the benefits of UPVC windows.

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Bifolding Doors

Bring the outside indoors with our beautiful SMART aluminium bi folding doors. The most durable, tried and tested bifold door in the market

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Want to add stylish space to your home? Then look no further than our orangery house extensions. In styles to suit all homes.

LivinRoof Extension

Conservatory Roof Replacements

Is your conservatory a cold, damp and unusable room in your home? Why not look into upgrading your conservatory roof with either a Spectrum Tiled UltraRoof or our Hybrid Roof.

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Front Doors

Is your entrance door letting your home down? Get it replaced with one of Spectrum Glazings stylish front doors.

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Experienced & Qualified double glazing installation

Our fully qualified MCT accredited survey and installation teams will fit any of our double glazing products to perfection. All products fitted by us as replacements for existing windows and doors are eligible for CERTASS certification.

We are proud members of Quality Assured National Warranties and, as such, all of our installations are covered by a 10-year, insurance-backed guarantee, giving you complete piece of mind that your home is in safe hands.

Supply Only… oh yes we do…

If you already have a builder or fitter and just need top quality doors, windows, bi-fold doors, roof lanterns or energy efficient aluminium windows, no problem. We are more than happy to supply and let you and your team do the rest. That’s why we already have good relationships with house builders, designers, home renovators and more.

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Bring the outisde in with our fantastic bifold doors

Add the WOW factor to your home and seamlessly merge your patio and garden with your new living space to create a visually stunning addition to your home.

Our aluminium bi-folding doors can be installed with flush threshold opening onto your patio or courtyard to provide a fully integrated door solution bringing the outside truly inside.


Thermal efficient windows

Our uPVC and aluminium windows have been manufactured to ensure excellent levels of thermal efficiency of your home. This means they help to keep the warm air inside your home and the cold air out..


Reduced noise pollution

Installing our double glazed uPVC or aluminium windows help to reduce the amount of noise in your home. They act as a barrier between you and the outside world, helping you enjoy the peace and quiet..


High Quality Window Products

Our market leading suppliers Liniar for upvc windows or SMART for aluminium windows allows us to install windows that are of a higher quality. Their components deliver the complete performance and are the nation’s preferred choice.


Low maintenance windows

By using a uPVC or aluminium framework, our windows require very little upkeep to maximise their performance. Occasional attention to the moving components and lubrication is all that’s required.

Double Glazing Services

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There are many different styles of conservatory for you to choose from. These include, but are by no means limited to: the classic ‘lean to’ conservatory with a slope straight back to your house, the Victorian-style conservatory which adds undeniable elegance and beauty, and the modern conservatory for those with a more functional purpose in mind

uPVC Windows

Installing new or replacement windows can make a huge difference to your home. At Spectrum Glazing, we always ensure that new windows are perfectly fitted, with no heat escaping or cold sneaking in – this could result in big savings on your monthly energy bills.


Our traditional orangery designs will give your home an added touch of class, without making any compromises on security. At Spectrum Glazing, we design your orangery with consideration for the average wind and snow loads in your area, ensuring that the final product is ideally suited to your situation. Ultraframe orangery designs, in particular, give the solidity and infrastructure of an extension, as well as the additional light of a traditional conservatory.

Aluminium Bi-Foliding Doors

One of the most innovative and practical entrance door styles on the market, aluminium bifolds installed by Spectrum Glazing are the full package. Consisting of anywhere between 3 and 7 panels, bifold doors spoil homes with light thanks to an emphasis on crystal clear glazing that blurs together inside and outside living spaces whether open or closed. 

Home Extensions

As part of our extension installation services, we at Spectrum Glazing we fit high performance house extensions in homes across Brightlingsea, Clacton-on-Sea, Witham, Chelmsford and Essex. Contact us if you’d like to get a house extension price

Sliding Patio Doors

Available in either upvc or aluminium our inline sliding patio doors are highly engineered making installation simple and guaranteeing trouble free through life performance.

Roof Lanterns & Skylights

An inherently sleek yet stylish design, lantern roofs and flat skylights are a subtle addition that has the potential to revitalise any darkened areas of the home. They can comfortable sit atop any location that sports a flat roof, improving the aesthetics and thermal retention of properties almost instantly.

Replacement Roofs

Less hassle than constructing an entirely new conservatory, we at Spectrum Glazing give Colchester homeowners the opportunity to revitalise dilapidated extensions with a suite of high-performance warm roof replacements. More stylish and thermally efficient than conventional polycarbonate roofs, tiled warm roofs are a quick but long-lasting fix.

Flush Casement Windows

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French Doors

French or Double doors can be a very dramatic addition to your home. Simply, throw open your doors to let the outside, inside. Making your living space airy and appear so much larger. Importantly, although a greater opening area is achieved, security is still assured. 

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Top 6 things to consider for your solid conservatory roof installation

Top 6 things to consider for your solid conservatory roof installation

So, you've seen the solid conservatory roof ads on billboards around town, in your local paper, and on vans from local installers in and around Colchester, but how can you tell if the best choice for your home is a solid roof conservatory? That's why we compiled our...

Aluminium Bi Folding Doors

Aluminium Bi Folding Doors

Our impressive selection of Bi-Fold Doors in Aluminum can help create a seamless link between your home and garden. Aluminum is a reliable material which means they can sell a slimline version because it takes less aluminium to retain structural strength compared to...

UPVC Sliding Sash Windows

UPVC Sliding Sash Windows

Whether you live in an older property or a more modern home, ECOSlide PVC-U sliding sash windows are a cost-effective solution for replacing like for like replacement or as an alternative to other styles. Vertical sliders are a traditional style of window. Commonly...

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About us

Spectum Glazing are door and double glazing specialists. Based in Brightlingsea, we fit modern glazing solutions, including windows and doors, thoughout the Colchester area. Contact us for a free, no-obligation price or use our conservatory, door and window online quoting engines.

What we do

Staff at Spectrum Glazing have over twenty years experience in the supply, manufacture and installation; of windows, doors and conservatories. We will ensure that we use our double glazing expertise to ensure that your home improvement project is firstly priced competitively and then installed with the minimum of fuss. Contact us today for a free no obligation and pressure free quotation.

Spectrum are not into flash sales or BOGOF offers and we’ll never ask you to sign up today. We’re the company committed to delivering quality windows, doors and conservatories at everyday affordable prices with no double glazing sales gimmicks or pressure sales.

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