If you need a first class window cleaning company, or require any guttering or roofing work, then I can very strongly recommend this family owned company. I have used Masterglass for over 20 years to clean my windows, clear my guttering and do roofing work at my home in Ravenhill Park. I have always found their work to be of the highest quality. The business is run by Jimmy and his son James, who are very professional and take great pride in their work. They are also friendly, helpful, and reliable.