Expert: James Ball - 1/23/2010

Question
I am planning on installing an insert in my fireplace and am considering venting it to the first tile. My question is, can I use the black stove pipe from Lowes or better yet, what can I use besides stainless steel? I heard I could use galvanized but also heard of zinc poisoning related. Also, the stove doesn't have a collar (I bought it used) it has just a flat 3.5"x14" opening on top.I plan on making a collar but dont know what material is adiquate. Thanks alot in advance.

Answer
Hello George, 1st check with your local building department for local codes for that type of installation. and follow the manufacturers installation instructions for installation.
I recommend a lining (Stainless Steel flex liner and insulated) all the way to the top. It will make the stove vent much safer, less creosote build up and make cleaning much easier. the install you suggest is minimum NFPA code but you have to remove that "stove pipe" (not galvanized) and the insert every time you need to clean it (might be 2-4 times a year) (have it checked every 1/2 cord of wood burned until you have a gauge)
as far as the collar, take your measurements to a local machine shop and have them make it out of Stainless Steel and mount it permanently to the top of the stove with  a round or oval end to fit the liner (be sure you leave room to side the insert in and out of the fireplace)
I would have a local Certified Chimney Sweep www.csia.org, (there you can look up by zip code to find one near you) take a first hand look at what you have they should be able to help.
Hope this helps
James