FIS windows has been installing double glazed UPVC windows, doors and conservatories in Colchester for many years.

We offer a wide choice of products and finishes in UPVC, aluminium and hardwood.

We understand that double glazed home improvements are a considered purchase and choosing your new windows, doors or perhaps a new conservatory can be a daunting task.  So let us guide you through the options available.

We do not employ pushy sales techniques and our sales team is not paid on commission. What we do offer is quality products backed up by first class customer service and after sales care. 

So if you’re planning any type of double glazed home improvements and would like some honest, expert advice, please call us or visit our showroom to discuss your needs.


Get in touch

Complete the form below to ask us a question, arrange a home survey or get a quick quote.



Whether you choose UPVC, aluminium or real wood, replacement double glazed windows will make a huge difference to the look of your home. They will also improve insulation, saving you money on energy bills. In addition your home will be more secure.


Available in a range of materials and finishes, our replacement doors are of the highest quality.

We install all types of doors from front doors to patio,  French & bi-fold doors.  We also make bespoke doors.



Our conservatories and orangeries are very popular with customers across Suffolk and Essex and are a great addition to any home. If you need extra space, or would just like somewhere to sit and relax and look out onto your garden, then a new conservatory or orangery could be the perfect solution!

For more information on our Windows, Doors & Conservatories please call us on 01473 251757 or visit our showroom

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