Contractors & Developers

Your construction project in professional hands

Our professional service for commercial doors and windows ensures we help your building programme, and the entire project goes smoothly, from the initial tender stage to project handover and support.

Working with property developers, construction professionals, architects or clients directly, our commercial glazing service ensures our clients benefit from a complete fenestration solution. We work predominantly within small-to-medium scale contracts, including mixed-use developments, local retail, housing, education, healthcare or specialist work. Our commercial windows and door systems are highly specified and ensure you meet your design, performance and specification requirements.

Specification, Tenders and Project Estimating

Our comprehensive range of glazing systems ensures we have the product choices to help meet both your required building specification and budget. We can also help with product samples and work with your client or architect. Our tenders are detailed with a full product specification covering all essential information, ensuring cost clarity. We can also attend pre-contract site meetings if required.

From helping you with your glazing specification for your building project to project management and after-care, C&A Window Systems help you create outstanding new buildings or refurbishments to your required budget, programme and end user brief. We manufacture and install our products, from a simple small window replacement project to a new shopfront or a complete installation in medium-duty commercial buildings.

aluminium windows for contractors and developers in a new block of flats.

Manufacturing, Installation and Project Management

Complete Glazing Solution

Knowledge & Expertise

Expert Manufacturing

Once you decide to place an order, we carry out a professional survey and confirm the final manufacturing details. Our production processes are streamlined to ensure we meet your installation programmes, whether in full for smaller projects or staged installations for larger contracts. Our focus is delivering your products on time and with routine communication with your Site Supervisors or Project Managers.

A professional installation

Once your windows and doors are ready, we’ll confirm and agree on our installation date with you, advising on any final details required. Upon completion, we walk you through any operational aspects of your new glazing and answer your questions.  Our installers are fully trained in all aspects of glass and frame handling, with the required Health and Safety training and required site accreditation and certification. Of course, we adhere to all site safety procedures and requirements.

We can also help with Health and Safety conformity information or Method Statements.

Tried and Tested aluminium glazing systems

Aluminium doors and windows are the heart of what we do. That is why our Reynaers and Senior Architectural Systems already have an established track record of suitability for commercial glazing projects.

For housing, our products meet your required building specifications for security, energy efficiency, or specific insulation or acoustic requirements. Our commercial doors and windows are designed to withstand the rigours of a high-traffic environment such as a school or retail premises, also having the required accessibility, access control, fire-escape or other functional requirements.

Your refurbishment or construction project in safe hands

Our professional and expert commercial glazing services cover the following sectors and more.

  • Local authority refurbishment or new building work
  • Education facilities, schools, colleges, universities or special facilities
  • Commercial buildings of all types, offices, manufacturing, distribution and retail
  • Refurbishment projects to existing housing or commercial buildings
  • New Build contracts including Design and Build
  • Residential developments of houses, flats or apartments.

Commercial Doors and Windows, Frequently Asked Questions

C&A Window Systems Ltd have extensive manufacturing experience, providing tried and tested systems for contractors and developers. Here we answer some common questions but encourage you to get in touch for advice on your project.

What are the best commercial windows?

For commercial buildings, the best aluminium windows must meet the design and client requirements and individual functional needs. A good commercial window is secure, energy-efficient, weather resistant and meets the styling required. In addition, commercial windows should be easy to adapt, for example, having window control or ventilation systems fitted, specific handles to assist any disabled users, as well as accepting different types of technical or performance glass. The overall product warranty is also important, covering materials, installation and the powder-coated surface finish.

What windows are used in commercial buildings?

One of the benefits of using windows designed for commercial buildings is their various opening functions. Top hung or side hung, bottom hung open in, tilt and turn, pivot, reversible, parallel opening or a combination of these opening functions can be used in commercial buildings. The option to provide various frame profiles, such as those for larger opening windows is also common place for windows used in commercial buildings.

What is the difference between commercial doors and residential doors?

The significant difference between commercial doors and residential doors is that the commercial design ensures the doors stand up to the higher traffic and more intensive use of commercial buildings. Far more people use a door set in a public building than in a typical dwelling; the door is opened hundreds or thousands of times during the day. This intensive use and durability differentiate the doors fitted in homes and those in schools, shops, offices, and other high-use buildings. Commercial doors must also meet the needs of disabled users and not be a barrier to entry or exit.

What doors are used in commercial buildings?

Depending on the location, aluminium doors used in commercial buildings are doors designed to provide effective entry and exit, security, fire escape, access control and other individual features. At the same time, these doors must have a low threshold, assist the disabled and not be difficult to use. These can also be automated, either fully or on demand. For light-commercial contracts such as developments of care homes, dwellings or small schools, it is possible to use rebated doors such as those used in dwellings, but typically enhanced with heavier duty profiles and hardware.

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.

Put your project in safe hands

The right products are specified, with the most cost-effective solutions. All backed up by fast manufacturing, project delivery and professional installation.

Meeting your client's requirements

Whether it is design, performance, functionality, accessibility or compliance, our products meet your building needs.

Aluminium Expertise

Our modern factory, manufacturing the leading systems for contractors and specifiers ensures the best customer and site service.

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.