Not only do we supply replacement uPVC windows and doors, we also provide unrivaled on the ground customer support.

Over 30 years experience in quality replacement uPVC window and door design

Leading replacement uPVC windows and doors in Northern Ireland

A and J Windows has a long established history of producing replacement uPVC windows and doors. We are situated just off the M1 motorway near the village of Moira, Co. Down. The business has been built up from small beginnings in the 1970’s to the present where our extensive workshop is equipped with a wide range of modern machinery.

Windows and doors can be supplied prefinished with a range of colours complete with a choice glass type including the latest thermal efficient double glazed units and Kite marked safety glasses. Doors can be supplied with multi-point locking systems prehung on their frames ready for installation.

Combining innovative design with advanced manufacturing techniques, A and J windows and doors have taken replacement upvc windows to a new level in terms of of energy efficiency, sustainability, durability and strength . A and J windows offer the best of all worlds – strength and security for peace of mind; stunning looks with its fully sculptured silk-smooth finish;  superb energy efficiency with ‘A’ rating as standard; and are one of the greenest windows on the market thanks to unique recycling capabilities and innovative co-extrusion process . Add to that an unrivaled 10 year manufacturer’s warranty on both frames and sealed glass units and a huge choice of styles ad colours and it’s easy to see why A and J windows are the best selling trade frame in the Northern Ireland.

Contact us today about our energy efficient replacement uPVC windows and doors.

  • 10 Year Product Guarantee 100% 100%
  • A Rated Energy Efficiency 100% 100%
  • Low maintenance & cleaning 100% 100%
  • Customer Happiness 100% 100%
Replacement uPVC windows at A and J Windows

A and J Windows

2a Glen Road


Co. Down

Northern Ireland

BT67 0JH


(028) 9262 1557


Opening Hours

Mon to Thurs 0830 - 1730

Fri 0800 to Midday

Saturday CLOSED (except by appointment)