Welcome to C&A Window Systems

Supplying bespoke aluminium doors and windows to homeowners, the trade and construction sector.

Sales: 01787 477976

Aluminium experts for the homeowner, builder or installer

Crafted aluminium doors and windows, correctly made, delivered on time and backed by service and support when needed. 

C&A Window Systems manufacture, supply and install expertly-crafted architectural aluminium windows, doors and associated glazing. We work with homeowners, the glazing trade, developers and specifiers.

A premier manufacturer of the prestigious Reynaers brand and an approved Reynaers At Home partner. You benefit from cutting-edge aluminium windows and doors for residential property and the light commercial sector.

Whether you’re looking to renovate your home, are an installer looking for quality products with reliable supply or are a contractor with a commercial build project, your project is in safe hands.

Why Choose C&A Window Systems Ltd

Whatever your project, we have an extensive product range delivering the best possible design, styling, security and insulation. Above all, they meet today’s light and space requirements. The latest architectural aluminium windows, contemporary sliding and folding doors front and residential doors in a choice of frame styles, colours and personalisation options. Made-to-order glazing, in aluminium or alu-clad, comprising fine wood inside and aluminium outside.

Our trade and commercial clients benefit from tried, tested, and highly specified products. Aluminium windows, commercial doors and shopfronts, curtain walling, general doors, and windows for medium or high-traffic buildings. Our Senior Architectural range offers developers and specifiers tried and tested commercial products or Reynaers for dwellings and light commercial contracts.

From small residential projects to large commercial developments, our versatile team are on hand to offer expert support at every stage of the process. We are committed to providing products with the required styling, specifications and compliance for renovation and new construction projects. 

  • Desirable products for homeowners
  • Designed to meet Building Regulations 
  • Helping our customers maximise aluminium sales and profit 
  • Competitive prices and lead times  
  • Expert advice

Explore our range of services

measuring new windows copy

Trade Supply Doors and Windows

C&A Window Systems serve installers, retail or commercial glazing firms, builders and property maintenance companies with reliable trade supply fabricated doors, windows and associated glazing systems.  You can trust us to help you maximise the benefits of the popular aluminium sector.  Fast quotations, competitive prices, easy ordering, site delivery and customer care. Our first-class trade supply service gives you access to aluminium products your clients want for their residential or commercial projects. 

homeowners bifold doors

Doors & windows for homeowners

For homeowners or clients looking for supply and installation, C&A Window Systems provide a full service, from our initial consultation to a professional quotation, survey, and precision installation, backed with a quality guarantee. Our installation service covers Essex, Cambridgeshire, Suffolk, London, Kent, Sussex and Surrey. Outside our installation area, we can connect you with our vetted and trained network of professional and trusted installation partners.  Our installation partners provide our quality-made doors and windows. You also benefit from a full survey and installation service, installation and product guarantee.   

commercial window installers

Glazing for commercial projects

Our commercial glazing systems are some of the most specified by architects and building contractors.  C&A Window Systems provide a full range of products for commercial buildings or developments of new dwellings. We manufacture a diverse range of commercial doors, shopfronts and screens, curtain walling, doors and windows.  For schools, offices, retail and housing projects, we help you achieve the required specifications, manufactured on time and installed by us or our network of trained and professional glazing installation partners.   

woman on a sofa in front of doors by C&A Window Systems Partners

Become a C&A Partner

Interested in selling better aluminium systems your customers will love? Talk to us about becoming a C&A Window Systems Partner. Benefit from a closer and better partnership with your supplier and grow your installation business. From our quality-made products, our reliable trade supply service, competitive prices and providing you with high-quality enquiries. Contact us to find out how working with C&A provides better opportunities in the strong market for contemporary aluminium.

Discover Our Product Range

Reynaers aluminium windows and doors are engineered to last, and designed to enhance and transform any property.  Our crafted windows and doors are made with meticulous attention to detail, delivered on time, and backed with our expert product, technical and installation support. From general window replacements to complex architectural designs and suitable for modern or traditional buildings, we bring any project to life.

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.