Chimney safety

Going to install a old wood stove in my shop that will run right through the rafters to outside, no attic. Not super formilur with piping rules. Biggest question is when do you start the insulated double chimney pipe? As soon as you get to the support box on the rafter is what I'm understanding. Also can you have normal insulation touching the double chimney pipe? Will upload pictures later

 

Old L.P. furnace and chimney. Also the stove will be too close to the wall so that's another problem.

 

I am not familiar with all of that but I am sure someone will be along that will be able to tell you exactly how to do hook everything up in a safe manner! Good luck with your setup!

 

Yes start the insulated pipe at the ceiling support box. Don’t let it touch the insulation buy or make a attic insulation shield to maintain air space around chimney.

 

Thanks, never thought all that pipe and chimney pipe would add up so much. Do you think heat shields would help with being too close to the wall? Or should I add elbows to keep it as far away as possible?

 

What do you mean every elbow adds to the height requirements? As for the stove requirements, I have no clue since the model number is chipped off so I have no clue what it even is. What would you suggest for a non combustible shield? I live in east sd so it gets damm windy often lol.

 

I would try to keep your flue as straight as possible. This will keep your draft strong and make it a lot easier to clean.

You can reduce your clearance requirements by adding heat shields. Steel roofing works well, but anything 24G or thicker can be used. Just make sure you leave an air gap on the bottom and between the shield and the wall so it can convect and cool. If you don't know the clearance requirements for your particular stove, then you have to go to default clearance for any stove, which is 36" without any shielding, 18" with shielding.

 

Thanks for the links! So you would suggest not having elbows? I know they are not good but I'm trying to get away from the wall. I wish the hole was in a different spot. That was all old stuff that was in the garage, just moved here this fall.

 

I planned on getting the half double smoke pipe to put along the wall on the back side of pipe and then something behind the stove. But I'm not totally sure.

 

Use 45 degree bends if possible instead of 90s. The more angle, the more draft is reduced.

If it was me, I'd cut a new hole in roof for the pipe, and use a straight shot of pipe. That'll make cleaning it easier. Any bends and you get to dissassemble your pipe to clean it every year.

 

Yeah I have been toying with the idea of making a new hole. Just makes me nervous thinking about cutting a hole in the roof is all. Also don't want the stove in the way either, but it's probably the safest thing to do too. I'll have to get a picture of the stove later today! I do have this though.

 

Huh? Sorry, I'm not following here...