wow i cleaned the flue pipe. the flue pipe travels up through a masonry chimney and ive never closed the top of it so there was a gap all the way down the side of the flue pipe looking down from the top of the chimney. anyway i cleaned the flue pipe and what a mess came out and lots of it too i am very surprised. i am closing the gap round the flue pipe but am considering insulating it too. now is there any real benefits doing this, some say burns more efficient ?? back to the flue the fire draws tons better amazing.