Timber & GRP Composite Doors.

Behind that rather scientific-sounding name, you'll find the latest technology and design in doors. And when you're indoors you'll enjoy loads of style, strength and security.
Lets get personal now. How your door looks is up to you. Like traditional-style or contemporary? you can choose from numerous styles in various colours. Keep looking - we've got a selection of door furniture and a beautiful range of glass too.
We like to keep out technicians busy. And you safe. So we've tested our doors to the very limit, against extreme weather, extreme attack - and extremely over enthusiastic visitors. And wannabe burglars are going to hate those hi-tech security features.

Click here to view brochure from Doorstop.

Click here to view  brochure from Solidoor.

Police Approved.
If anyone knows about security, its the Police. The Secured by Design upgrade meets their international standard for safer homes. Its not only Police-approved - its recognised by many insurance companies.
Extra Security: Safe as Houses.
Our lock feature a cylinder which is impossible to bump or break. All tested to the latest BS6375 security standards. And recognised as a security asset by insurance companies.


The Secure By Design and British Kitemark approved UAP+ Zero Lift Cylinder is one of the most popular security cylinders available, offering good security at an affordable price. In combination with a security handle set, it is almost unbeatable... click here for more info.

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#1 Customer Service

The underlying objective of Customer care carried out within Alternative Windows will continue to be aimed at maintaining an environment in which everyone employed and associated with the Company perceives themselves as purveyors of quality within Customer relationships. In achieving the above we recognise that quality contact is important at every stage from initial enquiry through pre-sales advice to aftercare.

Contact Us

Sycamore House, Cross Green Industrial Estate Knowsthorpe Lane, Leeds LS90PJ

Map Directions

Freephone No: 0800 035 4180

Telephone:  0113 2483773
FAX:  0113 2482123
E-mail: sales@alt-win.com