About us

Experts in Aluminium Glazing

Here at C&A Window Systems Ltd, we are one of the UK’s leading manufacturers and suppliers of high-end aluminium glazing products using the leading European and British systems. Thanks to over a hundred years of combined experience amongst our team, you can be confident that we can provide the best advice and guidance on your project.

Our company specialises in manufacturing and supplying bifolding doors, residential and commercial doors, windows, curtain walling and sliding doors. Our technical and product knowledge, manufacturing expertise and processes ensure we help you bring to life residential projects and complete commercial projects to the required specifications and design.

Manufacture, Supply and Installation of the leading aluminium systems

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C&A Window Systems Ltd focus predominantly on the renowned Reynaers Aluminium product range. Reynaers is a premier aluminium systems company and its range of products, expertly made by us, all focus on outstanding design, energy efficiency, sustainability and, above all, superb product quality. We believe the Reynaers range provides the most desirable windows and doors and some of the best in terms of specification, engineering and brand reputation.

Whether a property renovation project or a demanding architect-designed build, Reynaers provide mid-range and high-end glazing solutions for our homeowner and trade customers desiring windows and doors with some of the best possible specifications and innovative design.

Every one of our crafted aluminium products meets virtually any specification and client requirement, including meeting Building Regulations for energy efficiency, ventilation, or accessibility. At the same time, our systems are extensively tested to the latest security, weather performance, insulation and acoustic standards.

The finest doors and windows for homeowners

For homeowners looking to improve their property, our collection of desirable windows and doors promise style, high performance and long-term reliability. Beautifully made doors and windows to replace your dated glazing or finish your new building project to perfection.

All our doors and windows are manufactured by us in our advanced factory and installed by our courteous and professional installers, backed by a quality guarantee and caring after-sales service.

A complete service to the glazing and construction sector

about C&A Window Systems Ltd

The service provided by C&A Window Systems Ltd includes a reliable trade supply of fabricated doors and windows if you are an installer in the glazing trade or a property professional looking to buy fabricated windows and doors.

If you are an architect, end-user client or specifier, you can take advantage of our project service to help you get the right doors and windows, meeting the specifications or functional requirements.

Are you a homeowner or an end-user client? You can transform your property with our crafted doors and windows with excellent build quality, fit and finish. These are installed by our trusted network of installation partners with the full survey and installation service, also coming with a quality guarantee and FENSA or CERTASS compliance.

Glazing for the construction and fenestration trades

C&A Window Systems Ltd are at the forefront of the glazing sector. Our attention to detail and unrivalled customer service ensures your ideas are planned, designed, manufactured and installed, giving you peace of mind throughout. Our team are all on hand to help with any queries you may have.

The leading glazing systems and brands

Our window and door brands are at the forefront of our service to homeowners, the fenestration trade and our developer clients. Each is carefully chosen because they deliver on aesthetics, performance, security and energy efficiency.

Reynaers Aluminium

We are proud to be Premier Reynaers Aluminium manufacturers and approved Reynaers at Home Partners and with a brand new showroom showcasing the best in contemporary windows, bifolding and sliding doors and residential doors.

The Reynaers name is synonymous with only the best-engineered windows and doors. The Reynaers Aluminium collection focuses on creating energy-efficient, expertly-made glazing that transforms homes and light commercial buildings.

reynaers patio doors1
velfac windows1

Contemporary VELFAC alu-clad

The long-established VELFAC brand is synonymous with contemporary slimline alu-clad windows, doors and commercial glazing systems.

VELFAC products combine fine natural pine on the inside with premium, coloured aluminium on the outside. A prestigious brand that has for years enhanced dwellings, commercial buildings and developments of luxury apartments and houses, VELFAC windows and doors deliver quality, slim sightlines and a desirable modern style.

Rationel wood & composite glazing

The comprehensive collection of Rational wood and alu-clad glazing systems offers both crafted all-wood windows designed for superior service life and incredible product quality. Also available from Rationel is a bespoke alu-clad range, again providing finely sustainable and responsibly sourced wood inside with durable and low-maintenance aluminium outside.

Rationel windows and doors deliver on most client requirements available as both contemporary and traditionally styled windows and doors for the discerning client.

white rationel windows and doors viewed from inside in a curved room
Senior Architectural Commercial doors in a cheltenham office building

Senior Architectural Systems

One of the leading British systems houses, Senior Architectural systems is widely specified by architects, developers and the wider construction sector. The range of Senior windows and doors, focuses on attractive, functional, affordable and, above all, reliable commercial glazing and products for dwellings.

Most noteworthy are Senior commercial glazing systems, firmly established in the UK market as some of the best shopfronts, screens, entrance doors and curtain walling.

Customise Your products

A personalised touch

Glass options

Contemporary designs that enhance security and privacy.

Integral Blinds

An attractive addition delivering privacy and shading when you need it.


Peace of mind starts when you get in touch and lasts for years.

steve arundellsteve arundell
13:43 02 Nov 23
Chris and Andy listen to what we wanted and their team then delivered in spades.Great company well worth the effort to contact.
ArBa InstallationsArBa Installations
22:23 20 Dec 22
Posting from the view of an Installations company, C & A have always been a pleasure to deal with. Their process is very thorough and products are top quality. We use them for all our commercial doors and would highly recommend all their products and them as a company.
Paul DillonPaul Dillon
14:17 23 Nov 22
Great service. Top products. Thank you. C&A
Alfie TonerAlfie Toner
13:43 21 Nov 22
Great company to deal withQuick quotesPleasant staffGreat productsGreat customer supportDefinitely recommend
22:50 12 Jun 22
Couldn’t recommend this amazing company enough from start to finish the professionalism have been second to none. The quality of the work undertaken shows how much C&A take pride in there work. Thank You again
Gary WoodhatchGary Woodhatch
11:11 11 Mar 22
Have been dealing with Andy and Kim in the main at C&A windows for a few months now and the service overall has been great, quick quotes, lead-times inline with expectations and well presented and packaged goods. Great responsive aftersales assistance when called upon. Would recommend C&A for sure.
richard newellrichard newell
07:44 11 Mar 22
Always a pleasure to work with the people at c and a, very good communication throughout the process and most importantly the product is excellent.Highly recommended.

Send us an email

Send us an email if you have any questions.


call us

Need to know more about our products? Call us, and a member of our sales team will help you.

01787 477976

visit us

Book an appointment to visit our showroom.  
8am – 5pm Monday – Friday

Unit 1, Lancaster Way
Earls Colne Business Park, Earls Colne, Colchester CO6 2NS

We are looking for new staff to join our team.