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A1 Window Cleaning Company is a family run Belfast based commercial window cleaning company. The art & service of commercial window cleaning has been passionately passed down in the family from father, Thomas to son Michael, who now heads up the team. All members of the team are highly proficient and well trained in the use of the innovative window cleaning technology and equipment deployed by A1 Window Cleaning Company. This includes commercial reach & wash and high reach pressure washer systems, of which A1 were the first to use in Northern Ireland many years ago. All jobs offer a 100% satisfaction based guarantee and are completed to the high standard. If anything is not right, we will address it with immediate effect.

With more than 40 years’ experience in commercial window cleaning the company has developed a proud and trusted name, which services over 150 clients across Northern Ireland.  A1 Window Cleaning Company is a solutions based company which is known for completing challenging jobs and working in a precise clean, no mess and no fuss manner. A1 offers each client a regular well planned and convenient cycle of window cleaning throughout the year to ensure results reflect and enhance the impact which windows have on everyday business.

A1 works efficiently with clients to limit disruption in the work environment, whether its inside or outside.  Health and safety is a priority and full risk assessments and compliance is adhered to on all jobs.


A1 has its Safe Contractor Membership #WV3511 and is a member of the Federation of window cleaners: Membership #8904. It also has its IPAF certificate’s for Mobile elevating work platforms and is fully insured for Public & Employer Liability.



A1 is proud to invest in its people, service and equipment to ensure the highest levels of satisfaction.


(028) 90 589213

Customer Service


Ormeau Business Park
8 Cromac Avenue

Get in Touch

Contact us, leave a message and request a
NO OBLIGATION Quotation or a chat!

(028) 90 589213