In recent weeks contractors have been treating the exteriors of buildings throughout Brennanstown.
The second phase of the process is now underway, with additional treatment of stubborn stains on the exteriors.
The contractors will be on site for another week or so.
One of the more prominent examples of discoloration was on Le Hunt House.
Below is a photo of what it looked like prior to treatment and another taken today, after the building was treated this morning.