• Windows

    SCI are independent window suppliers and installers of high quality, bespoke double glazed uPVC, aluminium, sliding sash windows and energy rated windows.

  • Doors

    SCI are independent door suppliers and installers of high quality, bespoke uPVC, composite, patio, french and bi-fold doors.


Quality Replacement Windows & Door Specialists


To all of our valued customers;
The Government is asking us to take all necessary precautions to avoid the spread of the Coronavirus and specifically to maintain social distances and avoid all but essential travel.

To this end we feel it would also be irresponsible of us to ask our customers to have us working in their homes and / or our employees to work in homes.
We are therefore taking the difficult decision to close our offices and suspend all future installations and service work with effect from 5pm on 23rd March 2020.

This is a temporary measure and we intend to continue trading once it is safe to do so.

Our email office@sciwindows.co.uk will be monitored so please do contact us with any concerns and we will do our best to respond as quickly as possible.

We will continue to update you through our website, social media channels, emails where we can in the coming weeks.

But in the meantime we thank you for your continued support and custom.


As a homeowner you need to be sure you are choosing the right replacement window company, one that will provide quality products, great service and value for money.

SCI has been doing this for over 30 years.

With around 10,000 satisfied replacement window and door customers, SCI has thrived on quality, innovation and customer care. Our customers appreciate the no pressure, no hassle approach and commitment to service – long after the installation has been completed.

We supply & fit top quality products

Replacement Windows

Replacement windows will add warmth and security to your home, increasing its value and saving energy.

Replacement Doors

Whatever type of door you are looking for our replacement door systems will transform your property.