Double Glazing Companies in Northern Ireland

List of Northern Ireland based installers, suppliers & manufacturers offering window & door double glazing, installation, repair & replacement services.

Business Listings

We believe in offering quality double glazing products at a fair price, and over the years we have built a solid reputation for outstanding value and customer service. It is no wonder then that over 98% of our customers happily recommend us to family and friends.


Art Glass was established by Philip Coyle and Sinead Mallon in 1983, it has grown from small studio to now being at the forefront of Irish stained glass. Our aim is to maintain the highest standards of artistry and craftsmanship in stained glass conservation and creation.


Working with glass since 1983 All Purpose Glazing is a family run glass merchant and processing business that has continued to grow. We offer comprehensive glass and glazing solutions to suit any job large or small in the homes or commercial premises across Ireland and the UK.



When you choose new windows, doors or a conservatory for your home, you are making an important decision. Of course, you want products that offer true style and quality at a reasonable and affordable price.


Our windows are more than just a pretty face. They come in a range of glazing options, from 4mm single to 28mm double, have superior EPDM gaskets, and have frames that feature advanced triple chamber construction that entirely isolates the frame?ís galvanised steel reinforcements, ensuring that moisture cannot seep in. Your home will be warm, cosy, draught-proof and quiet regardless of the weather


Window Fixing and Maintenance Limited are based at 10 Trench Road, Mallusk, Co. Antrim and are involved in the Design, Fabrication and Installation of high quality aluminium and uPVC Systems. The company has been trading for 30 years and has gained a reputation for Quality Products and Workmanship of high standard.


Thermoseal Group supply machinery and components to the glass and double glazing industry. We specialise in sealants, spacer bar, desiccant, decorative profile, decorative glass, hot melt machinery and glass washing machinery. In short, everything you need to manufacture insulating glass.