Emerald Facility Services is one of Ireland`s leading providers of professional contract cleaning and facility services to co ... mmercial and public sector premises nationwide. As a 100% Irish owned company Emerald Contract Cleaners (Ire) Limited was established in 1975 to provide quality window cleaning and industrial cleaning services. 2002 saw Emerald re-launch as Emerald Facility Services to reflect its diversification from window cleaning and industrial cleaning into commercial cleaning and maintenance services. read more