Converting wood fireplace chimney to gas top vent
Hi all. I have a gas fireplace that was converted from a wood burning fireplace before I bought my house. When they converted it they just kept the old wood burning chimney stack and vented the gas fireplace through it (at least that's what I think they did, since there are no other external vents we can find for it). We want to keep the gas fireplace, but the old chimney stack is extremely unsightly and is on the front side of the roof for all to see. We want to get rid of the chimey stack and replace it with a vent. But we know nothing of this process. Can anybody shed any light on this conversion? Can we do this ourselves? Do we need to pass a building code inspection? How much will it cost? Any information would be greatly appreciated. Thanks.