Hi can you help me. Im blocking up an existing open fireplace. I've got hold of a terracotta pepper pot style chimney cowl. I was wondering whether these are usually cemented in place or if simply placing the cowl into the chimney pot should be sufficient? It's a pretty heavy thing and the bit which will be inserted in the pot will be about 5 inches deep. I won't ultimately be fitting it myself, but if it doesn't require cement then I'll simply ask a man with a long ladder to pop it up there. Thanks for your answers in advance!
