I installed a wood furnace this summer and I have a 26 year old brick chimney with clay liner. The problem is that i'm getting ice build up about a foot above my clean out and creosote water is laying on top of the ice just below the furnace connection pipe. I had to get out with torch now 3 times to melt ice and release the water. I'm worried about that water finding its way back into stove pipe one day and the water is wicking its way through the brick on back of the chimney. Any ideas to get me through this winter so I can put up new prefab chimney in the summer?