Windowmate is one of Northern Ireland's leading providers of PVCu windows, doors and conservatories. We have been in business since 1997, supplying to both homeowners and the trade. 

Our highly knowledgeable and friendly team has over 50 years' experience combined and we pride ourselves on offering professional advice and value for money products.

Our Products

All of our windows and doors are manufactured onsite by Dessian Products Ltd. Dessian has been fabricating PVCu products for over 25 years using world renowned REHAU plastic profile. We offer three systems depending on your requirements - Tritec (60mm), S706 (70mm) and Fully Sculptured Edge (70mm).

Double and triple glazed units are available and we can supply products with a Window Energy Rating of A, B or C.

Please ask us for more information.

Our Showroom

Come and visit the Windowmate showroom! Here you will find a wide range of window, doors and conservatories on display as well as accessories and glass. You will be able see first hand the quality of the materials and workmanship that goes into all our products.

Simply call at our premises and Joe or Adrian will be able to show you around.


With over 12 years in business, Windowmate maintains a reputation of value for money products and great customer service. Whilst we are a supply only operation, we have a list of competent fitters that we will be happy to recommend.

Please contact Joe or Adrian for more infomation.

Windowmate Competition


Submit a photo of a recent installation and you could win a REHAU goodie bag!


Terms and Conditions apply.

Windowmate is a one-stop-shop for all your PVCu needs, supplying fully glazed windows, doors and conservatories.

Our website is divided into trade customers and homeowners, or you can go directly to our product range using the adjacent buttons.

With years of experience under our belt, we can offer advice and solutions for any PVCu installation.

Simply contact Joe McAllister or any member of the Windowmate team who will be delighted to help.

Windowmate - trade
Windowmate - home owners
Windowmate - products

Belfast: 028 9050 8772 | Joe McAllister Mobile: 07739 262804 | Email: