Contact Us

Whether you want some help with your homebuilding project, or have a technical issue regarding your windows and doors, you can can call us on          01869 248181 or email

You can also get in touch with us using the LiveChat feature at the bottom right of your screen.  

Our opening times are:

Monday - Thursday: 08.00 - 17.00 

Friday: 08.00 - 15:30 

If you are looking to get a quote for having one of our windows or doors fitted for your own homebuilding project, head to this page to be referred to a Rationel-approved distributor.

For enquiries in Northern Ireland, please email or call 028 30260758.

Our address

Rationel Windows (UK) Ltd.

7 Avonbury Business Park

Howes Lane

Bicester, OX26 2UA

United Kingdom


Please contact us to make an appointment for the showroom, please see below for what you will be able to see here.

NI Address

Unit 13A

WIN Business Park

Canal Quay


Co Down BT35 6PH 




If you would like to discuss the possibility of a career with Rationel, please send a CV and covering letter to our Human Resources Department at

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