by katz »
Thu Aug 09, 2007 12:45 pm
If it's only for decoration purposes and you are not intending to install a gas fire or burn anything there - the best way is to seal it off with a metal plate, just on the top of the fireplace opening. This will act as an insulation, stopping heat from escaping through open chimney - you will spend less on your electricity bill. It will also stop dirt falling into your decorative fire place from the walls of the chimney.
Go to a fireplace shop - they know what it is and can advise you on installer.