We supply & install Double Glazed Windows, Doors & Conservatories

FIS Windows are double glazing specialists based in Ipswich. We install windows, doors & conservatories for customers across Suffolk.

Specialising in double glazed home improvements, we’ve been transforming Suffolk homes 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. 

Call us on 01473 251757 to request your quotation or visit our Ipswich showroom


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.

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.


Take a peek at some of our latest installations

Fascias, Soffits & Guttering

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

Exterior Cladding

Looking to give your home a bit of a facelift?  Consider adding our hard-wearing, fire resistant exterior cladding. 

FIS wins Plastic Window Federation Installation of the Year

We are delighted to have won the PWF Installation of the Year award for our Warm Roof Extension!  

Service Centre

Need repairs to your existing doors, windows or conservatory?  We can help!

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.