About Us


Dessian has 30 years' experience fabricating windows, doors and conservatories. We pride ourselves on manufacturing high quality PVCu products using primarily REHAU profile.

As one of the largest fabricators in the United Kingdom and Ireland, we have over 100 employees. Our staff turnover is extremely low, meaning our team is highly experienced with excellent product knowledge. We operate from a state-of-the-art 70,000 sq. foot factory in Belfast and we also have a factory in Cumbernauld, Scotland.

Our customers cover the entire range, including Retail Window Companies, Trade Installers, House Builders, Municipal Education & Health Authorities, Fire Authorities, HMP and Housing Associations across Ireland and Great Britain. 

Windowmate, which was formerly a trading division of Dessian Products Ltd and is now a separate subsidiary company of our parent company Gaffer group, supplies DIY and trade sales. Dessian Scotland also supplies DIY and trade sales, and glazed products can be supplied on request. 

Over the years, we have achieved a number of accreditations to ensure that all of our products are manufactured to the highest possible level. These include ISO and Kitemark features. We can also supply a range of Secured by Design products, a widely recognised police initiative which promotes the use of security standards on windows and doors to prevent crime on homes and commercial premises.

All of our windows will meet a Window Energy Rating (WER) of either A, B or C depending on build specification. Where specified a U-Value of 0.8W/m2K can be achieved with triple glazed units.

Dessian can also provide you with the “Satellite” business management tool. This software does more than simply order frames. Satellite will help you to manage your business, professionalise quotations and offer multiple quote options for your customers. It can also create accurate invoices, provide a comprehensive cost analysis of each job and, importantly, provide instant glass sizes. Dessian can provide you with full workplace training inclusive of sales, technical and IT support, however, once up and running the system is usually straightforward. We will be happy to provide more details on request.

Our Mission Statement

"To create a culture where ideas are valued and where every employee believes that they can assist Dessian in delivering a quality product and service that will exceed customer expectations."


Homeowners click on the link below to visit the Windowmate website: