Velux window specialists in Northern Ireland

Welsh Property Developments


We are a family run business located across Northern Ireland, Belfast, Ballymena and Ballymoney. We have been installing Velux Roof Windows for over 35 years and are Northern Ireland's leading supplier and installer of Velux products. Our aim is to provide quick, professional service to all our customers.

Our goal is to change the feel and concept of a room with the light and ventilation which comes from a Velux roof window. Our specialist teams can provide and advise costings on single fits to multi-fits as we specialise in Velux daylight to life roofspace conversions and bathrooms. 






Covid 19  update.  All our teams are currently adhering to government guidelines.

A full copy can be forwarded on with enquiries.  






Our fitting teams are Velux Academy trained and certified. 

We are fully insured and accredited.

Surveys are carried out within 4 days with no hard sell policy.

Office staff have full product facts and costings.

We have over 35 years of product knowledge and fitting.

Order to fit times is approx 2-3 weeks.

Free no obligation quotations are given for the project.

Full 10-year guarantee on product and fit. 




Bring light to any room 


Brighten up any room in the house and give it the much-deserved light it needs.

Transform any room of the house with a full range of Velux products.






Velux diagram 




Our staff are available from 9am to 9pm to discuss any Velux queries.






 028 25646777




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