We'll be building our log home within the year and the design has a fireplace on the main level. We're planning on using a zero-clearance wood burning fireplace with a blower. I'd like to put a wood burning stove in the lower level (walk out livable basement) and share the chimney (separate flues). I'm told that this could cause problems with cross drafting, smoke coming into the unused flue at the time. I also read that top-sealing dampers that open and close with steel cables can prevent this from happening. Anyone have any experience with sharing a chimney? I would love for this to work to get the heat benefits from the wood burning stove downstairs living area while having the asthetics (and heat) of the fireplace on the main level. Would appreciate any thoughts or experience.