by rigga »
Tue Feb 17, 2009 9:14 pm
dabhand, Most type of permanent markers are either spirit based, water based or oil derivatives marker. It would help if you knew which type that has been used, if the pen was a spirit type then you could use an oil based sealer if an oil derivative or water based marker use a spirit based sealer ,as you would not be able to remove all traces of this from a plastered painted surface.