Stove Pipe Tolerances

Stevo

I am curently, looking at at job framing and installing a ceiling, on a L-shaped farmers porch.It will be 1x6 pine T&G.
There is a stove pipe that comes out of the house, takes a 90,and then goes strait through the roof.
This is one of my issues while installing this ceiling.
Any reccomandations on stove pipe flanges or tolerances for combustible materials.
I did'nt measure it, but, I would guess this pipe is around 8", and probably insullated.
Thanks, Steve-o

Kgmz

Most insulated pipe like Metalbestos needs a clearance of 2", some other brands are more.

You will need to get what is called a firestop/wall spacer, which is required when the pipe passes through combustible floors or ceilings.

reveivl

Around here you need 2" clearance to decking and 1/2" clearance to framing from insulated pipe. But IMO to CYA you should require the customer to have it inspected and passed.

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bill r

What's the fuel? Any solid fuel: be extremely careful. With any solid fuel, eventually that chimney will catch fire and burn the caked fuel. When that happens, 6 FEET of clearance is hardly enough.

karma_carpentry

You have to KNOW what kind of stovepipe it is. You have to know the brand, let alone whether it's insulated or not.

Selkirk makes Metalbestos, which is the most popular insulated chimney pipe. Youve got to verify exactly which stovepipe they have, what fuel they're using, and then use the manufacturer specifications. You'll have to use the correct flanges and supports.

I don't think Metalbestos stamps their pipes if I remember correctly so you'll need to know it by unscrewing a section and seeing the connector style and identifying it that way. Start reading at http://www.selkirkinc.com/index.html - go to Products and read the specs.

Probably at a big plumbing supply house or a ductwork supply house in your area, you can find the various stovepipes. Or else at a woodstove supply house. Most places carry only one brand or another so identify the brand first.

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Stevo

I was checking out this job again today. The existing pipe comes out of the house about 3 feet above the porch floor, then goes straight up through the roof of the porch. It has been flashed at the roof.
My ceiling will be level. So there will be a small air-space between my ceiling and the roof.
I did'nt get a make on the pipe. Then again I was'nt looking.
It is 8" o.d .stainless steel and insulated.
It's a wood stove, which was "raging" when I arrived there.
The pipe was warm on the outside, but, not hot.
I went to a local stove shop today. They told me Class A and a flange could cost anywhere from $50 to $500.
I guess I have some research to do!

reveivl

Yeah, the parts for metal chimneys are expen$ive. But you're not buying it, you're selling it.

Around here the pipe has to have 2" of insulation to pass inspection, which, with an 8" OD, I doubt you have. Check the literature, upsell the right parts, get it inspected and CYA!!

__________________
From where does knowledge come? If you need to know what is in a box, you could ask someone (not reliable), you could pray, (not useful), you can consult with the scripture (not helpful) or you could open the box (science)