Question: I want to put a wood burning fireplace in my basement. I took out an old boiler which was vented to a masonry chimney approx. 8-10 inches in diameter. Can I use this old chimney which runs up through the walls and above the roof to vent a wood burning fireplace? If not, due you have any suggestions or alternatives? Thanks for your time and consideration. Answer: Chances are that you can use the chimney IF: you install a freestanding fireplace or wood stove which requires the same size or smaller diameter chimney. DO NOT TRY TO: Install a masonry fireplace or pre-fab zero clearance fireplace into this chimney ALSO: Make certain the chimney has a terra cotta (tile) liner...if not, you can line it with a stainless steel pipe. Hope that helps.