We supply & install double glazed windows, doors & conservatories in Suffolk

FIS Windows is an Ipswich based double glazing company. We install uPVC windows, doors and conservatories for customers in Ipswich and across Suffolk.

Specialising in double glazed home improvements, we’ve been transforming homes in Suffolk since 2006.  Our business has been built on our reputation for providing high quality products at competitive prices.  As a family run business we take great pride in the service we offer and the products we supply.

So if you’re considering new double glazed windows, doors or perhaps a new conservatory and would like some honest, expert advice, please get in touch. 

Covid-19 Update: Whilst we are able to remain open for business we have closed our showroom to visitors. We are still permitted to carry out installations and offer quotations. If you have any enquiries regarding an installation that you have booked with us or you would like to book an appointment please get in touch. 

If you have an installation booked with us please let us know if any of the following apply:

  • You are shielding
  • You are isolating
  • You have tested positive for Coronavirus

We can take the necessary steps to keep both you and our staff safe.

Call us on 01473 251757 to arrange your FREE no-obligation quotation



New, double glazed windows can transform the look and feel of your home. 

Available in a variety of styles and finishes, we can recommend replacement windows to suit you and your home.



FIS offers a range of beautifully designed, professionally crafted double and triple glazed doors.

Our UPVC, hardwood & composite doors come complete with A-Rated energy efficient glass and high performance security features. 



We’ve been installing conservatories in Ipswich & across Suffolk for many years.

A classic conservatory or stylish orangery will transform your home, creating extra space for you and your family.


Take a peek at some of our latest installations

In a few simple steps you can design your door to suit your taste, style and home.

Click on the Solidor logo to start designing and get your FREE no-obligation quote.

Fascias, Soffits & Guttering

Avoid damp and structural problems in the home by checking and replacing fascias, soffits and guttering before damage occurs.

Service Centre

Need repairs to existing double glazed doors, windows or conservatories?  Get in touch with our Service Centre team and let them know what you need.

Customer feedback...


As a family run business we take great pride in the service that we offer to our clients.

Unlike some double glazing companies, our sales staff don’t work on commission. There’s no pressurised selling here.  Just honest people dedicated to delivering the best service at value for money prices. 

We will give you a quote and answer any of your questions, then give you time to decide if and how you would like to proceed.