alternative to manufactured woodstove flue

Hi,
I would like to have some feedback on this. I want to install a woodstove in my house and I had the idea to use some readily available (and free) stainless steel sch. 10 pipe and calcium cilicate pipe insulation. The plan would be to have a single length of 6" pipe surrounded by the 2" cal-sil and then have an outer wall of 10" stainless steel pipe. I will still maintain the recomended clearances through the house and the total length should not exceed 20'. Am I wrong or does this appear to exceed what the manufactured flue systems can provide.
Thanks Dave

"dave" wrote:

Hi,
I would like to have some feedback on this. I want to install a woodstove in my house and I had the idea to use some readily available (and free) stainless steel sch. 10 pipe and calcium cilicate pipe insulation. The plan would be to have a single length of 6" pipe surrounded by the 2" cal-sil and then have an outer wall of 10" stainless steel pipe. I will still maintain the recomended clearances through the house and the total length should not exceed 20'. Am I wrong or does this appear to exceed what the manufactured flue systems can provide.
Thanks Dave

The specs are irrelevant. You'll never get an insurance company to cover a homemade flue. If you have a fire, you are SOoL.

Harry Chickpea wrote:

"dave" wrote:
Hi,
I would like to have some feedback on this. I want to install a woodstove in my house and I had the idea to use some readily available (and free) stainless steel sch. 10 pipe and calcium cilicate pipe insulation. The plan would be to have a single length of 6" pipe surrounded by the 2" cal-sil and then have an outer wall of 10" stainless steel pipe. I will still maintain the recomended clearances through the house and the total length should not exceed 20'. Am I wrong or does this appear to exceed what the manufactured flue systems can provide.
Thanks Dave
The specs are irrelevant. You'll never get an insurance company to cover a homemade flue. If you have a fire, you are SOoL.

Certainly wouldn't expect to get a buiding permit for this because no certification that it meets the relevant code of practice. No local authority would accept the possibility of liability for failure of the flue and if the OP goes ahead without resource consent then the insurers would probably dig their heels in even if any fire had nothing to do with the stove.