The St. Columba's Chapel project was the most difficult, complex, challenging and enjoyable restoration done by Maher Stained Glass. The style of the windows was thought to be a crude first effort by David Maitland Armstrong, executed by the Tiffany Studio. The fourteen windows were in fact beautifully crafted but were poorly restored in the 1960's. The previous restorer had not used rubbings, altered many pieces of glass and replaced hundreds of pieces of glass with mismatched glass.

The restoration included the reconfiguration of the design of each window, releading, the replacement of devitrified glass, replacement of over 1000 previous poor replacements and altered glass, sash restoration and protective glazing.

For more information about this project, visit the web site of renowned stained glass conservator Julie Sloan.