S F G Windows, Doors & Conservatories is located in Belfast, Antrim.We will supply and fit UPVC windows, doors, conservatories, panels and composite doors. We use the inlighten system from one of the top manufacturers in Northern Ireland.All of our frames and glass carry a 10 and 15 year guarantee.If you are ready to add a conservatory to your home, then look no further.If you are looking for high quality composite doors in the Belfast area, our composite doors are thick, powerful and strong.