Replacing oil boiler chimney pipe

[Dabbler]

I'm having my chimney pipe replaced tomorrow. I wasn't able to afford a professional and an experienced friend is going to do the job. Below are some photos of the current installation, which was done by a professional and I had no problems with it. I'm replacing the pipe because it's rusty. We will use the same configuration.

I'm wondering what things I should be aware of for this job to be done successfully and safely. Any special instructions?

 

[Dabbler]

Follow-up question: can I use 26-gauge flue pipes? My understanding is that 24-gauge is the standard, but no one in my area seems to sell that.

 

[brenndatomu]

Anyone have stainless? That would be a one n done solution there...and yes, I think 24ga is the requirement, but I bet plenty of 26 has been used.
We have a lil Amish metal shop nearby that sells stainless for about the same price as the cheap black pipe at the hardware store/etc...

 

[Dabbler]

No stainless. I ended up having to buy 26-gauge because none of the big box stores had 24. That tells me that professionals in my area don't use it. I wonder why.

 

[maple1]

Don't use galvanized like the previous 'professional' did.

 

[maple1]

No stainless. I ended up having to buy 26-gauge because none of the big box stores had 24. That tells me that professionals in my area don't use it. I wonder why.

Usually pros don't buy at big box stores.

 

[brenndatomu]

Don't use galvanized like the previous 'professional' did.

Galvanized is common on oil fired flues

Usually pros don't buy at big box stores.

True

 

[salecker]

Galvanized was the code when i built my system around 2010

 

[maple1]

Really? I guess I stand corrected then. But still wouldn't use it on mine, quite sure.

 

[all night moe]

Really? I guess I stand corrected then. But still wouldn't use it on mine, quite sure.

I agree with you. Even though I've seen it used with gas and oil applications.
I just don't like heated galvanized metal.