I remember years ago in the family home that had a fireplace there was a metal plate in the chimney. I think it was there to prevent drafts and I assume keep some heat in.
Now I am an adult I always look out for them but never see them. In trying to google I came across this site but I doubt it is the same thing as there is no way the simple thing we had would have cost €250 so anyone know what I am talking about and if so where to find one?
I just do not want most of the heat going up the chimney.